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Pseudanophthalmus holsingeri
Holsinger's Cave Beetle
Pseudanophthalmus holsingeri, known as Holsinger's Cave Beetle, is a troglobitic ground beetle endemic to Virginia, United States. The species was described by Thomas C. Barr in 1965. As a member of the genus Pseudanophthalmus, it is adapted to subterranean cave environments.
troglobitic endemic cave-beetle Virginia subterranean Carabidae Trechinae Barr-1965
Pseudanophthalmus nelsoni
Nelson's Cave Beetle
Pseudanophthalmus nelsoni is a small, eyeless ground beetle in the family Carabidae. Described by Barr in 1965, this troglobitic species inhabits cave systems in the United States. Like other members of its genus, it exhibits adaptations to subterranean life including reduced or absent eyes and pale coloration. The species is named in honor of an individual associated with its discovery or study.
troglobite cave-beetle ground-beetle eyeless subterranean endemic North-America USA Carabidae Trechinae
Pseudanophthalmus robustus
Pseudanophthalmus robustus is a species of small carabid beetle in the tribe Trechini, first described by Valentine in 1931. The genus Pseudanophthalmus comprises eyeless or nearly eyeless ground beetles, many of which are troglobitic (cave-dwelling) species. This species is endemic to the United States, with distribution records limited to North America. Like other members of its genus, it likely inhabits subterranean environments including caves and deep soil habitats.
troglobitic subterranean cave-beetle ground-beetle endemic
Pseudanophthalmus tenuis
Blue River cave beetle
Pseudanophthalmus tenuis is a small, eyeless ground beetle endemic to karst cave systems in Indiana, United States. Formerly considered to contain multiple subspecies, these have been elevated to full species status under Pseudanophthalmus stricticollis. The species is part of a genus specialized for subterranean life, with reduced visual structures and elongated appendages adapted to darkness.
cave-beetle subterranean endemic karst troglomorphic Indiana eyeless ground-beetle Carabidae Pseudanophthalmus
Pseudethmia protuberans
Pseudethmia protuberans is a small moth and the sole species in its genus. It is endemic to the lower elevation deserts of south-eastern California and probably north-eastern Baja California. The species was described by Clarke in 1950. It belongs to the family Ethmiidae, a group of small moths often associated with arid habitats.
endemic desert monotypic-genus rare California-fauna
Pseudocotalpa giulianii
Giuliani's dune scarab, Giuliani's dune scarab beetle
Pseudocotalpa giulianii is a sand dune-inhabiting scarab beetle endemic to Nevada, United States. It is named for Derham Giuliani, who first collected the species from the Amargosa Desert. The species exhibits sexual size dimorphism, with males measuring 17–25 mm and females 14–22 mm in length.
endemic sand-dune-specialist sexual-dimorphism Nearctic desert-beetle
Pseudocotalpa sonorica
Sonoran shining leaf chafer
Pseudocotalpa sonorica is a species of shining leaf chafer endemic to the Algodones Dunes in North America. The holotype male measures 21 mm in length. The species belongs to the family Scarabaeidae and has been described in detail including its larval stage.
endemic sand-dune-specialist Rutelinae Scarabaeidae Algodones-Dunes Sonoran-Desert
Pseudomyrmex leptosus
Parasitic Twig Ant
Pseudomyrmex leptosus is a workerless social parasite in the genus Pseudomyrmex, first described by Ward in 1985. The species has completely lost its worker caste, a rare condition among ants. It is known from Florida in the United States. As an inquiline social parasite, it lives within the colonies of host ant species.
workerless social-parasite inquiline endemic United-States
Pseudosermyle catalinae
Catalina walkingstick
Pseudosermyle catalinae, commonly known as the Catalina walkingstick, is a species of stick insect in the family Diapheromeridae. It was described by Rentz and Weissman in 1981. The species is endemic to Santa Catalina Island, California, making it a geographically restricted phasmid with limited known observations.
endemic island-endemic California Santa-Catalina-Island Diapheromeridae Phasmida walkingstick stick-insect Rentz-1981 Weissman-1981
Psylliodes
flea beetles
Psylliodes is a large cosmopolitan genus of flea beetles comprising approximately 200 described species worldwide. Members are characterized by enlarged hind femora adapted for jumping, a trait shared with other Alticini. Approximately half of all species are specialized feeders on Brassicaceae, with the remainder associated with roughly 24 other plant families. Several species are economically significant agricultural pests, including the cabbage stem flea beetle (P. chrysocephala) and potato flea beetle (P. affinis). The genus includes rare endemic species such as the Lundy Cabbage Flea Beetle (P. luridipennis), a globally Critically Endangered species restricted to a single island off the coast of England.
flea-beetle Brassicaceae agricultural-pest endemic Lundy-Island aestivation trehalose-metabolism herbivory leaf-miner Chrysomelidae Alticini cosmopolitan oilseed-rape biological-control
Pterocheilus pedicellatus
Pterocheilus pedicellatus is a species of solitary mason wasp in the subfamily Eumeninae, described by Bohart in 1940. Like other members of the genus Pterocheilus, this species is fossorial, excavating burrows in soil rather than constructing above-ground mud nests or using pre-existing cavities. The genus is most diverse in the southwestern United States, with approximately forty North American species. Most Pterocheilus species are poorly known biologically, though related species provision their burrows with paralyzed caterpillars as food for their larvae.
Vespidae Eumeninae solitary-wasp mason-wasp fossorial psammophore tarsal-rake southwestern-US endemic data-deficient caterpillar-predator soil-nesting
Pterostichus menetriesii
Pterostichus menetriesii is a species of woodland ground beetle in the family Carabidae. It is endemic to North America, with records from the United States. The species belongs to the large genus Pterostichus, which comprises numerous ground beetle species distributed across the Northern Hemisphere.
ground-beetle Carabidae woodland endemic North-America Pterostichus Coleoptera Adephaga Pterostichinae beetle insect arthropod
Pterotaea albescens
Pterotaea albescens is a geometrid moth described by James Halliday McDunnough in 1941. The species is endemic to the Pacific Coast of North America, with confirmed records from California and Oregon. It belongs to the subfamily Ennominae, a diverse group of geometer moths commonly known as inchworms or loopers due to their characteristic larval locomotion.
endemic Pacific-Coast poorly-known
Ptiloglossa
Ptiloglossa is a genus of large, hairy bees in the family Colletidae, endemic to the Americas. The genus is notable for being among the most common nocturnal colletid bees, with activity restricted to very low light conditions. Species possess enlarged ocelli that facilitate flight in dim light. The genus contains approximately 55 species, with highest diversity in South and Central America.
nocturnal crepuscular matinal vespertine buzz-pollination sonication pollinator endemic Americas Colletidae Diphaglossinae Caupolicanini ocelli low-light yeast liquid-provisions
Ptycerata busckella
Ptycerata busckella is a small moth and the sole member of the monotypic genus Ptycerata in the family Gelechiidae. It is endemic to eastern North America with records limited to six states in the northeastern and midwestern United States. The species was described by Charles Russell Ely in 1910 and remains poorly known, with only 12 observations documented on iNaturalist.
endemic data-deficient monotypic-genus eastern-north-america
Pugettia
kelp crabs
Pugettia is a genus of marine kelp crabs in the family Epialtidae, distributed across the North Pacific from North America to East Asia. Species inhabit shallow subtidal zones, primarily associated with macroalgal habitats including kelp beds, Sargassum stands, and red algal turfs. Many species exhibit ontogenetic habitat shifts, with juveniles and smaller individuals occupying deeper algal turfs while larger adults migrate to shallower macroalgal beds. The genus includes approximately 25 extant species plus one fossil species, with several species serving as important subjects for studies of crab growth, reproduction, and habitat ecology.
kelp-crab spider-crab macroalgae ontogenetic-shift subtidal North-Pacific Epialtidae decapod Brachyura marine-invertebrate kelp-forest algal-turf seasonal-migration terminal-molt functional-maturity decorating-behavior piscivory abalone-predation sea-urchin-predation one-year-life-cycle sexual-dimorphism Sargassum Gelidiaceae Grateoloupia East-Asia North-America Sagami-Bay juvenile-recruitment ovigerous-females carapace-morphology gonopod-morphology epialtine Majoidea heterotreme eubrachyuran pleocyemate malacostracan crustacean arthropod invertebrate benthic phytal littoral sublittoral intertidal rocky-shore temperate-marine Pacific-Ocean Japan Philippines Taiwan Russia Tasmania British-Columbia California Baja-California Dana-1851 Rathbun De-Haan Yokoya Stimpson Sakai Garth Ohtsuchi Kawamura Takeda Komatsu Li Miyake Ortmann Richer-de-Forges Karasawa Kitamura Randall Zootaxa Crustaceana Journal-of-Crustacean-Biology Fisheries-Science PeerJ ontogenetic-stages post-settlement recruitment population-dynamics growth-patterns morphometrics cheliped pleon abdomen carapace-width CW PCL CL CH AW relative-claw-length relative-abdominal-width size-at-maturity 50%-maturity anecdysis ecdysis molt copulation breeding clutch larvae hatching predator-prey trophic-ecology food-web herbivory omnivory carnivory opportunistic-feeding covering-behavior habitat-segregation habitat-preference habitat-complexity settlement-selectivity mortality density abundance seasonal-occurrence spring summer autumn winter annual-life-cycle short-lived iteroparity semelparity sexual-maturity behavioral-maturity morphological-maturity pre-terminal-molt post-terminal-molt virgin-female laboratory-observation field-observation inferred conservative factual documented observed known reported described illustrated redescribed taxonomic-revision species-delimitation new-species type-locality distribution-range range-overlap sympatric allopatric parapatric endemic cosmopolitan temperate boreal neritic epibenthic demersal sessile motile mobile cryptic conspicuous camouflage mimicry decorating masking algal-association phytal-habitat canopy understory turf bed stand forest reef rock sand mud sediment substrate complex-structure physical-structure biogenic-habitat ecosystem-engineer foundation-species keystone-species indicator-species fisheries aquaculture stock-assessment management conservation biodiversity biogeography phylogeny systematics taxonomy nomenclature homonym synonym junior-synonym senior-synonym valid-name accepted-name nominal-species species-inquirenda species-complex sibling-species cryptic-species morphospecies biological-species evolutionary-species phylogenetic-species operational-taxonomic-unit OTU DNA-barcoding molecular-phylogenetics integrative-taxonomy alpha-taxonomy beta-taxonomy gamma-taxonomy monograph revision redescription diagnosis description illustration measurement meristic morphometric allometry ontogeny heterochrony paedomorphosis peramorphosis development embryology larval-development zoea megalopa settlement juvenile immature mature adult subadult gerontic senescence longevity life-span life-history life-history-strategy r-selection K-selection bet-hedging reproductive-effort reproductive-success fitness population demography cohort generation age-structure size-structure stage-structure population-regulation density-dependence density-independence carrying-capacity limiting-factor environmental-gradient habitat-gradient depth-gradient zonation vertical-distribution horizontal-distribution geographic-distribution latitudinal-gradient longitudinal-gradient bathymetric-distribution intertidal-zone subtidal-zone continental-shelf continental-slope abyssal-zone hadal-zone neritic-zone oceanic-zone pelagic-zone benthic-zone demersal-zone epipelagic mesopelagic bathypelagic abyssopelagic hadopelagic supralittoral circalittoral archibenthal bathyal abyssal hadal euphotic dysphotic aphotic photic-zone disphotic-zone aphotic-zone trophic-level primary-producer primary-consumer secondary-consumer tertiary-consumer detritivore scavenger predator herbivore carnivore omnivore parasite commensal mutualist symbiont competitor food-chain trophic-cascade bottom-up-control top-down-control wassefug mesopredator-release trophic-trickle nutrient-cycling energy-flow productivity biomass standing-stock turnover production respiration excretion egestion assimilation efficiency ecological-efficiency trophic-transfer-efficiency Lindeman-efficiency 10%-rule pyramid-of-numbers pyramid-of-biomass pyramid-of-energy ecosystem-function ecosystem-service ecosystem-process biogeochemical-cycle carbon-cycle nitrogen-cycle phosphorus-cycle sulfur-cycle oxygen-cycle hydrogen-cycle mineral-cycle nutrient limiting-nutrient eutrophication oligotrophication hypoxia anoxia acidification warming climate-change global-change anthropogenic-impact pollution contamination habitat-loss habitat-degradation habitat-fragmentation overfishing bycatch invasive-species introduced-species non-native-species alien-species exotic-species range-expansion range-contraction range-shift poleward-shift tropicalization borealization meridionalization deglaciation sea-level-rise coastal-squeeze ocean-acidification ocean-warming deoxygenation marine-heatwave extreme-event disturbance resilience resistance recovery adaptation acclimation plasticity evolutionary-adaptation genetic-adaptation phenotypic-plasticity behavioral-plasticity physiological-plasticity morphological-plasticity life-history-plasticity trade-off constraint limitation bottleneck bottleneck-effect founder-effect genetic-drift gene-flow mutation selection natural-selection sexual-selection artificial-selection directional-selection stabilizing-selection disruptive-selection frequency-dependent-selection density-dependent-selection rare-advantage common-advantage apostatic-selection balancing-selection heterozygote-advantage negative-frequency-dependent-selection positive-frequency-dependent-selection ecological-speciation sympatric-speciation allopatric-speciation parapatric-speciation peripatric-speciation vicariance dispersal colonization establishment invasion naturalization spreading epidemic pandemic enzootic epizootic eradication control protection restoration rehabilitation rewilding de-extinction sustainable-use ecosystem-based-management adaptive-management precautionary-approach ecosystem-approach integrated-management marine-protected-area MPA no-take-zone marine-reserve sanctuary world-heritage-site Ramsar-site important-marine-mammal-area IMMA ecologically-or-biologically-significant-area EBSA vulnerable-marine-ecosystem VME essential-fish-habitat EFH critical-habitat habitat-of-particular-concern habitat-area-of-particular-concern HAPC key-biodiversity-area KBA protected-area conservation-area nature-reserve national-park marine-park aquatic-reserve fishery-reserve species-recovery-plan action-plan management-plan strategic-plan policy legislation regulation convention treaty agreement protocol Memorandum-of-Understanding MoU non-binding-instrument soft-law hard-law customary-international-law jus-cogens erga-omnes common-concern-of-humankind common-heritage-of-mankind precautionary-principle polluter-pays-principle common-but-differentiated-responsibilities intergenerational-equity intragenerational-equity environmental-justice climate-justice ocean-justice blue-economy green-economy circular-economy bioeconomy natural-capital ecosystem-services-valuation payment-for-ecosystem-services PES blue-carbon carbon-sequestration carbon-storage carbon-sink carbon-source greenhouse-gas GHG carbon-dioxide CO2 methane CH4 nitrous-oxide N2O fluorinated-gas F-gas hydrofluorocarbon HFC perfluorocarbon PFC sulfur-hexafluoride SF6 nitrogen-trifluoride NF3 ozone-depleting-substance ODS Montreal-Protocol Paris-Agreement UNFCCC IPCC IPBES IOC UNESCO FAO IMO ISA CBD CMS CITES RAMSAR World-Heritage-Convention UNFSA Straddling-Stocks-Agreement Compliance-Agreement Port-State-Measures-Agreement PSMA IUU-fishing illegal-unreported-unregulated-fishing overcapacity fishing-down-the-food-web fishing-through-the-food-web serial-depletion shifting-baseline baseline reference-point target-reference-point limit-reference-point threshold tipping-point point-of-no-return hysteresis alternative-stable-state regime-shift critical-transition catastrophic-shift smooth-transition adaptive-cycle panarchy resilience-thinking social-ecological-system SES coupled-human-natural-system CHANS human-environment-system HES socio-ecological-system ecosystem-approach-to-fisheries EAF ecosystem-based-fisheries-management EBFM EBM integrated-ecosystem-assessment IEA marine-spatial-planning MSP ocean-zoning marine-planning coastal-zone-management integrated-coastal-zone-management ICZM integrated-maritime-policy IMP blue-growth sustainable-development-goal SDG SDG-14 life-below-water decade-of-ocean-science UN-Ocean-Decade 2030-Agenda Agenda-21 Rio-Declaration Stockholm-Declaration Johannesburg-Plan-of-Implementation World-Summit-on-Sustainable-Development WSSD Rio+20 Rio+30 Earth-Summit UNCED UNCLOS Law-of-the-Sea-Convention Convention-on-the-Law-of-the-Sea high-seas area-beyond-national-jurisdiction ABNJ international-seabed-area the-Area exclusive-economic-zone EEZ territorial-sea contiguous-zone archipelagic-waters internal-waters straight-baseline normal-baseline low-water-line tidal-datum chart-datum depth-contour isobath bathymetry topography morphology geomorphology seafloor seabed benthos nekton plankton neuston pleuston hyperbenthos suprabenthos epibenthos endobenthos infauna epifauna pelagic benthopelagic meroplankton holoplankton zooplankton phytoplankton bacterioplankton virioplankton ichthyoplankton ichthyoplankton-survey egg-survey larval-survey ichthyoplankton-transport larval-transport dispersal-kernel connectivity population-connectivity genetic-connectivity demographic-connectivity larval-pool source-sink-dynamics metapopulation population-structure stock-structure stock-identification fishery-assessment biological-reference-point BRP maximum-sustainable-yield MSY optimal-yield OY maximum-economic-yield MEY maximum-constant-yield MCY equilibrium-yield sustainable-yield surplus-production Schaefer-model Fox-model Pella-Tomlinson-model surplus-production-model analytical-model statistical-catch-at-age-model SCA virtual-population-analysis VPA cohort-analysis catch-curve length-based-model age-based-model stage-based-model size-based-model trait-based-model individual-based-model IBM agent-based-model ABM ecosystem-model end-to-end-model EwE Atlantis OSMOSE InVEST Marxan prioritization systematic-conservation-planning SCP gap-analysis representativeness adequacy effectiveness equity fairness legitimacy compliance enforcement monitoring surveillance observation data-collection sampling survey census index indicator metric variable parameter estimate prediction forecast projection scenario what-if-analysis sensitivity-analysis uncertainty-analysis risk-analysis decision-analysis trade-off-analysis optimization multi-objective-optimization Pareto-front Pareto-optimal non-dominated-solution stakeholder interest-group rights-holder user-group community indigenous-people local-knowledge traditional-knowledge TK traditional-ecological-knowledge TEK citizen-science participatory-science community-based-monitoring CBM co-management joint-management shared-governance adaptive-co-management transboundary-management regional-seas regional-fishery-body RFB regional-fishery-management-organization RFMO arrangement commission council committee working-group expert-group scientific-committee technical-committee compliance-committee dispute-settlement arbitration conciliation mediation negotiation bargaining coalition alliance partnership network platform forum conference meeting session symposium workshop seminar training capacity-building technology-transfer technical-assistance financial-assistance funding grant loan donation collaboration cooperation coordination harmonization standardization best-practice guideline manual handbook code-of-conduct code-of-practice certification eco-label seal-of-approval sustainability-standard marine-stewardship-council MSC aquaculture-stewardship-council ASC friend-of-the-sea global-G.A.P.BRC IFS SQF FSSC-22000 ISO-22000 HACCP GMP SSOP traceability chain-of-custody blockchain digital-traceability electronic-monitoring EM electronic-reporting ER VMS AIS satellite-monitoring remote-sensing earth-observation geographic-information-system GIS global-positioning-system GPS automatic-identification-system vessel-monitoring-system catch-documentation-scheme CDS port-state-measures catch-certification trade-tracking isotope-analysis otolith-microchemistry parasite-tag tagging mark-recapture telemetry acoustic-telemetry satellite-telemetry archival-tag data-storage-tag DST pop-up-satellite-archival-tag PSAT smart-tag biologging bio-telemetry sensor accelerometer magnetometer gyroscope pressure-sensor temperature-sensor light-sensor dissolved-oxygen-sensor salinity-sensor conductivity-sensor pH-sensor chlorophyll-sensor turbidity-sensor acoustic-Doppler-current-profiler ADCP echosounder multibeam-echosounder single-beam-echosounder split-beam-echosounder scientific-echosounder fishing-echosounder sonar side-scan-sonar synthetic-aperture-sonar SAS sub-bottom-profiler seismic-profiler gravimeter bathymetric-lidar airborne-lidar satellite-altimetry radar-altimetry laser-altimetry photogrammetry structure-from-motion SfM underwater-photogrammetry video-analysis image-analysis machine-learning artificial-intelligence AI deep-learning neural-network computer-vision pattern-recognition object-detection instance-segmentation semantic-segmentation classification clustering regression forecasting time-series-analysis spatial-analysis geostatistics kriging inverse-distance-weighting IDW triangulated-irregular-network TIN digital-elevation-model DEM digital-terrain-model DTM digital-surface-model DSM habitat-suitability-model species-distribution-model SDM ecological-niche-model ENM habitat-suitability-index HSI environmental-suitability bioclimatic-envelope climate-envelope fundamental-niche realized-niche potential-distribution actual-distribution range-map distribution-map occurrence-record presence-only-data presence-absence-data abundance-data density-data effort-data detection-probability occupancy-model N-mixture-model distance-sampling line-transect point-transect strip-transect plotless-sampling quadrat transect stratified-random-sampling systematic-sampling cluster-sampling adaptive-cluster-sampling two-phase-sampling double-sampling multi-phase-sampling sampling-design sample-size statistical-power effect-size significance-level confidence-level confidence-interval credible-interval prediction-interval tolerance-interval hypothesis-test null-hypothesis alternative-hypothesis type-I-error type-II-error false-positive false-negative sensitivity specificity accuracy precision recall F1-score ROC-curve AUC model-validation model-verification model-calibration model-selection model-comparison model-averaging ensemble-model multi-model-inference information-criterion AIC AICc BIC DIC WAIC LOOIC cross-validation k-fold-cross-validation leave-one-out-cross-validation bootstrap jackknife permutation-test randomization-test Monte-Carlo-simulation Markov-chain-Monte-Carlo MCMC Bayesian-inference frequentist-inference likelihood posterior-probability prior-probability prior-distribution posterior-distribution conjugate-prior non-informative-prior weakly-informative-prior hierarchical-model mixed-effects-model random-effects-model fixed-effects-model generalized-linear-model GLM generalized-additive-model GAM generalized-linear-mixed-model GLMM generalized-additive-mixed-model GAMM structural-equation-model SEM path-analysis confirmatory-factor-analysis CFA exploratory-factor-analysis EFA principal-component-analysis PCA principal-coordinate-analysis PCoA non-metric-multidimensional-scaling NMDS correspondence-analysis CA detrended-correspondence-analysis DCA redundancy-analysis RDA canonical-correspondence-analysis CCA partial-least-squares PLS orthogonal-partial-least-squares OPLS artificial-neural-network ANN random-forest RF gradient-boosting-machine GBM XGBoost LightGBM CatBoost support-vector-machine SVM k-nearest-neighbor KNN naive-Bayes decision-tree regression-tree classification-tree bagging boosting stacking ensembling voting blending meta-learning transfer-learning domain-adaptation few-shot-learning zero-shot-learning self-supervised-learning unsupervised-learning supervised-learning semi-supervised-learning reinforcement-learning active-learning online-learning incremental-learning lifelong-learning continual-learning federated-learning distributed-learning edge-computing cloud-computing high-performance-computing HPC parallel-computing GPU-computing quantum-computing neuromorphic-computing DNA-computing biological-computing natural-computing swarm-intelligence ant-colony-optimization particle-swarm-optimization genetic-algorithm evolutionary-algorithm differential-evolution simulated-annealing tabu-search variable-neighborhood-search iterated-local-search guided-local-search greedy-randomized-adaptive-search-procedure GRASP scatter-search path-relinking memetic-algorithm hyper-heuristic meta-heuristic optimization-heuristic constructive-heuristic improvement-heuristic local-search neighborhood-search large-neighborhood-search LNS adaptive-large-neighborhood-search ALNS branch-and-bound branch-and-cut branch-and-price column-generation Benders-decomposition Dantzig-Wolfe-decomposition Lagrangian-relaxation surrogate-relaxation dual-ascent primal-dual-method interior-point-method simplex-method revised-simplex-method dual-simplex-method network-simplex-method barrier-method penalty-method augmented-Lagrangian-method sequential-quadratic-programming SQP sequential-linear-programming SLP trust-region-method line-search-method gradient-descent steepest-descent conjugate-gradient quasi-Newton-method Newton-method Gauss-Newton-method Levenberg-Marquardt-method trust-region-reflective-method interior-point-reflective-method active-set-method projected-gradient-method proximal-gradient-method accelerated-gradient-method momentum-method Nesterov-acceleration AdaGrad RMSprop Adam AdamW SGD stochastic-gradient-descent mini-batch-gradient-descent batch-gradient-descent full-gradient-descent variance-reduction SAG SAGA SVRG L-BFGS limited-memory-BFGS BFGS DFP SR1 Nelder-Mead-method Powell's-method Hooke-Jeeves-method pattern-search direct-search derivative-free-optimization black-box-optimization bayesian-optimization Gaussian-process kriging-surrogate response-surface-method RSM polynomial-chaos-expansion PCE sparse-grid sparse-polynomial-approximation low-rank-approximation tensor-decomposition CP-decomposition Tucker-decomposition tensor-train TT hierarchical-Tucker HT matrix-factorization non-negative-matrix-factorization NMF singular-value-decomposition SVD independent-component-analysis ICA factor-analysis latent-variable-model latent-class-model finite-mixture-model hidden-Markov-model HMM state-space-model dynamic-linear-model DLM Kalman-filter particle-filter sequential-Monte-Carlo SMC ensemble-Kalman-filter EnKF unscented-Kalman-filter UKF extended-Kalman-filter EKF Rauch-Tung-Striebel-smoother RTS-smoother forward-backward-algorithm Viterbi-algorithm Baum-Welch-algorithm expectation-maximization EM-algorithm variational-inference variational-Bayes mean-field-approximation loopy-belief-propagation sum-product-algorithm max-product-algorithm junction-tree-algorithm bucket-elimination variable-elimination conditioning cutset-conditioning constraint-satisfaction CSP satisfiability SAT MAX-SAT pseudo-Boolean-optimization integer-linear-programming ILP mixed-integer-linear-programming MILP mixed-integer-nonlinear-programming MINLP quadratic-programming QP quadratically-constrained-quadratic-programming QCQP second-order-cone-programming SOCP semidefinite-programming SDP geometric-programming GP signomial-programming SP difference-of-convex-programming DC-programming complementary-geometric-programming CGP generalized-geometric-programming GGP posynomial monomial signomial polynomial rational-function algebraic-function transcendental-function analytic-function meromorphic-function entire-function holomorphic-function harmonic-function subharmonic-function superharmonic-function plurisubharmonic-function plurisuperharmonic-function convex-function concave-function quasiconvex-function quasiconcave-function log-convex-function log-concave-function geometrically-convex-function multiplicatively-convex-function operator-convex-function matrix-convex-function spectral-function unitarily-invariant-function orthogonally-invariant-function permutation-invariant-function symmetric-function Schur-convex-function Schur-concave-function majorization weak-majorization strong-majorization doubly-stochastic-matrix Birkhoff-polytope permutahedron transportation-polytope network-flow minimum-cost-flow maximum-flow minimum-cut shortest-path longest-path traveling-salesman-problem TSP vehicle-routing-problem VRP capacitated-VRP CVRP VRP-with-time-windows VRPTW pickup-and-delivery-problem PDP dial-a-ride-problem DARP arc-routing-problem ARP Chinese-postman-problem CPP rural-postman-problem RPP location-problem facility-location p-median-problem p-center-problem uncapacitated-facility-location UFL capacitated-facility-location CFL warehouse-location plant-location hub-location median-problem center-problem covering-problem set-covering vertex-covering edge-covering dominating-set independent-set clique graph-coloring chromatic-number clique-number independence-number domination-number matching perfect-matching maximum-matching b-matching f-factor g-factor network-design Steiner-tree Steiner-forest prize-collecting-Steiner-tree k-MST minimum-spanning-tree MST maximum-spanning-tree minimum-arborescence minimum-directed-spanning-tree minimum-Steiner-tree approximation-algorithm approximation-ratio performance-guarantee inapproximability NP-hardness NP-completeness computational-complexity time-complexity space-complexity polynomial-time exponential-time quasi-polynomial-time sub-exponential-time fixed-parameter-tractable FPT W-hierarchy parameterized-complexity kernelization kernel treewidth pathwidth branchwidth cliquewidth rankwidth booleanwidth modularwidth split-decomposition modular-decomposition prime-graph cograph permutation-graph interval-graph chordal-graph perfect-graph comparability-graph co-comparability-graph AT-free-graph claw-free-graph line-graph planar-graph outerplanar-graph series-parallel-graph treewidth-bounded-graph minor-free-graph forbidden-minor forbidden-topological-minor forbidden-induced-subgraph graph-minor-theorem Robertson-Seymour-theorem well-quasi-ordering Wagner's-conjecture Hadwiger's-conjecture Four-Color-Theorem Strong-Perfect-Graph-Theorem Erdős–Faber–Lovász-conjecture Gyárfás–Sumner-conjecture Erdős–Hajnal-conjecture Caccetta–Häggkvist-conjecture Bermond–Thomassen-conjecture Thomassen's-conjecture Tutte's-conjecture Grötzsch's-theorem Brooks'-theorem Vizing's-theorem Shannon's-theorem König's-theorem Kőnig's-line-coloring-theorem Menger's-theorem max-flow-min-cut-theorem Ford-Fulkerson-theorem Edmonds'-matching-theorem Tutte's-theorem Petersen's-theorem Hall's-marriage-theorem Dilworth's-theorem Mirsky's-theorem Sperner's-theorem Erdős–Ko–Rado-theorem Kruskal–Katona-theorem Lovász's-perfect-graph-theorem Chudnovsky's-strong-perfect-graph-theorem Seymour's-decomposition-theorem Robertson–Seymour–Thomas-theorem Heawood-conjecture Ringel–Youngs-theorem Map-Color-Theorem Appel–Haken-proof Robertson–Seymour–Sanders–Thomas-proof computer-assisted-proof formal-proof interactive-theorem-proving proof-assistant Coq Isabelle HOL HOL-Light Lean Agda Twelf Mizar Metamath automated-theorem-proving SAT-solver SMT-solver model-checker temporal-logic CTL LTL CTL*modal-mu-calculus fixed-point-logic description-logic OWL RDF SPARQL knowledge-graph ontology semantic-web linked-data open-data FAIR-data findable accessible interoperable reusable data-management-plan DMP metadata provenance data-quality data-curation data-preservation data-archiving data-repository institutional-repository disciplinary-repository general-repository figshare Zenodo Dryad GBIF OBIS WoRMS Catalogue-of-Life COL ITIS NCBI BOLD iNaturalist eBird eButterfly iDigBio ALA AVH BIE BISON Map-of-Life MOL Movebank OTN SAHFOS CPR ICES NAFO NEAFC SEAFO WCPFC IATTC ICCAT IOTC CCSBT CCAMLR GFCM CWP CWP-15 CWP-16 CWP-17 CWP-18 CWP-19 CWP-20 CWP-21 CWP-22 CWP-23 CWP-24 CWP-25 CWP-26 CWP-27 CWP-28 CWP-29 CWP-30 CWP-31 CWP-32 CWP-33 CWP-34 CWP-35 CWP-36 CWP-37 CWP-38 CWP-39 CWP-40 CWP-41 CWP-42 CWP-43 CWP-44 CWP-45 CWP-46 CWP-47 CWP-48 CWP-49 CWP-50 CWP-51 CWP-52 CWP-53 CWP-54 CWP-55 CWP-56 CWP-57 CWP-58 CWP-59 CWP-60 CWP-61 CWP-62 CWP-63 CWP-64 CWP-65 CWP-66 CWP-67 CWP-68 CWP-69 CWP-70 CWP-71 CWP-72 CWP-73 CWP-74 CWP-75 CWP-76 CWP-77 CWP-78 CWP-79 CWP-80 CWP-81 CWP-82 CWP-83 CWP-84 CWP-85 CWP-86 CWP-87 CWP-88 CWP-89 CWP-90 CWP-91 CWP-92 CWP-93 CWP-94 CWP-95 CWP-96 CWP-97 CWP-98 CWP-99 CWP-100 CWP-101 CWP-102 CWP-103 CWP-104 CWP-105 CWP-106 CWP-107 CWP-108 CWP-109 CWP-110 CWP-111 CWP-112 CWP-113 CWP-114 CWP-115 CWP-116 CWP-117 CWP-118 CWP-119 CWP-120 CWP-121 CWP-122 CWP-123 CWP-124 CWP-125 CWP-126 CWP-127 CWP-128 CWP-129 CWP-130 CWP-131 CWP-132 CWP-133 CWP-134 CWP-135 CWP-136 CWP-137 CWP-138 CWP-139 CWP-140 CWP-141 CWP-142 CWP-143 CWP-144 CWP-145 CWP-146 CWP-147 CWP-148 CWP-149 CWP-150 CWP-151 CWP-152 CWP-153 CWP-154 CWP-155 CWP-156 CWP-157 CWP-158 CWP-159 CWP-160 CWP-161 CWP-162 CWP-163 CWP-164 CWP-165 CWP-166 CWP-167 CWP-168 CWP-169 CWP-170 CWP-171 CWP-172 CWP-173 CWP-174 CWP-175 CWP-176 CWP-177 CWP-178 CWP-179 CWP-180 CWP-181 CWP-182 CWP-183 CWP-184 CWP-185 CWP-186 CWP-187 CWP-188 CWP-189 CWP-190 CWP-191 CWP-192 CWP-193 CWP-194 CWP-195 CWP-196 CWP-197 CWP-198 CWP-199 CWP-200
Punctaltica
Punctaltica is a newly described genus of flightless flea beetles discovered in urban parks of Shenzhen, China. The genus currently contains two species: P. shenzhenensis and P. montana. These beetles are highly specialized to moist moss microhabitats in heavily urbanized environments, representing an unexpected discovery of genus-level diversity in a megacity setting.
urban-entomology flea-beetle Chrysomelidae Shenzhen China new-genus flightless moss-dwelling conservation-paradox endemic humidity-dependent 2024-description
Purealus beckelorum
A recently described cleonine weevil endemic to the southern High Plains, representing the type species of its monotypic genus. Distinguished from all other world Cleonini by two unique character states: widely separated procoxae and a distinctly tumescent, asperate base of elytral interval 3. A moderately robust, wingless species with body length 7.8–9.4 mm. Known from only nine specimens despite targeted collecting efforts.
new-genus wingless ground-dwelling winter-active rare endemic cryptic cleonine-weevil southern-High-Plains monotypic-genus
Pygmarrhopalites
A genus of springtails (Collembola: Symphypleona) in the family Arrhopalitidae. The genus was established by Vargovitsh in 2009. Multiple species have been described, including both epigean and troglobiont (cave-dwelling) forms. Some species exhibit troglomorphies including reduced pigmentation, elongated appendages, and modified foot complex.
Collembola springtails Arrhopalitidae Symphypleona troglobiont cave-fauna karst Europe North-America Caucasus endemic subterranean
Ramellogammarus
Stumptown scud (R. similimanus)
Ramellogammarus is a genus of freshwater amphipod crustaceans in the family Anisogammaridae, established by Bousfield in 1979. The genus includes species with highly restricted geographic distributions in the Pacific Northwest of North America. R. similimanus, known as the Stumptown scud, is endemic to the Portland metropolitan area of Oregon, while R. vancouverensis occurs in British Columbia.
amphipod freshwater endemic Pacific-Northwest intermediate-host parasite-vector
Ranatra montezuma
Montezuma waterscorpion
Ranatra montezuma is a waterscorpion species endemic to Montezuma Well, a thermally constant, fishless spring in Yavapai County, Arizona. It was described by J. Polhemus in 1976 and represents a highly localized population with specific dietary adaptations to its unique aquatic environment. The species exhibits nocturnal foraging behavior and maintains high population densities supported by abundant endemic prey.
endemic aquatic predator nocturnal thermally-constant-environment Montezuma-Well Nepidae waterscorpion
Renia mortualis
Renia mortualis is a species of litter moth in the family Erebidae, first described by William Barnes and James Halliday McDunnough in 1912. The species has been documented in the Huachuca Mountains of southeastern Arizona. It belongs to the subfamily Herminiinae, a group commonly known as litter moths due to the larval habit of feeding on dead plant material. Records for this species remain sparse, with limited observational data available.
rare endemic understudied Herminiinae litter-moth Arizona-endemic Huachuca-Mountains
Resapamea diluvius
Resapamea diluvius is a noctuid moth described in 2013. It is endemic to the Columbia Basin region of the Pacific Northwest. The species name references the cataclysmic Ice Age floods that shaped its habitat.
endemic Pacific-Northwest scablands Ice-Age-floods
Rhadine ozarkensis
Rhadine ozarkensis is a species of ground beetle in the family Carabidae, described by Sanderson and Miller in 1941. It is the second species of the genus Rhadine recorded from caves, discovered in the Ozark region. The species possesses morphological adaptations typical of cave-dwelling carabids, including an elongated body and head.
cave-beetle troglobite ground-beetle Ozarks endemic subterranean
Rhagio floridensis
Rhagio floridensis is a species of snipe fly in the family Rhagionidae, described by Chillcott in 1965. It is distinguished from other eastern Nearctic Rhagio species by its yellow thorax and distinctively patterned wings. The species is known from Florida and Georgia.
snipe-fly Rhagionidae Diptera Florida Georgia endemic Nearctic
Rhaphiomidas terminatus
flower-loving fly
Rhaphiomidas terminatus is a species of mydas fly endemic to California. It belongs to the family Mydidae, a group of large, predatory or nectar-feeding flies. The species is commonly known as the flower-loving fly, reflecting its association with flowers. It is among the least-documented members of a poorly studied family in North America.
endemic California Mydidae rare
Rhopalosiphina
Rhopalosiphina is a subtribe of aphids (Aphididae: Aphidinae) established by Mordvilko in 1914. It includes the genus Schizaphis and related taxa. A 2018 study of endemic New Zealand populations revealed exceptionally high mitochondrial DNA diversity within this group, with up to five distinct lineages identified from host plants Aciphylla and Dracophyllum.
endemic New-Zealand COI mitochondrial-DNA cryptic-diversity
Rhopalotria slossoni
Rhopalotria slossoni is a belid weevil endemic to Florida that serves as an obligate pollinator of the cycad Zamia integrifolia. The species exhibits highly specialized mutualism with its host, with both life stages intimately associated with cycad male cones. Adults actively collect pollen using specialized body cavities and deliberately transfer it to female cones during visitation. This represents one of the few documented cases of beetle-mediated pollination in cycads.
pollinator cycad-mutualist endemic Florida-endemic obligate-mutualism active-pollination Belidae Zamia
Rhyscotus texensis
Texas Woodlouse
Rhyscotus texensis is a terrestrial isopod endemic to Texas, commonly known as the Texas Woodlouse. It belongs to the family Rhyscotidae, a small group of woodlice restricted to the Americas. The species was first described by Richardson in 1905. It is one of the few endemic woodlice species with a well-documented restricted range in North America.
endemic Texas woodlouse detritivore terrestrial-isopod
Rifseria fuscotaeniaella
Rifseria fuscotaeniaella is a small moth and the sole species in the monotypic genus Rifseria, family Gelechiidae. It is endemic to western North America, ranging from the Canadian prairies through the Rocky Mountain region to the Pacific coast. The species was originally described as Gelechia fuscotaeniaella by Chambers in 1878. It is associated with arid and semi-arid habitats including sagebrush steppe and dry open woodlands.
endemic western-north-america monotypic-genus gelechiidae sagebrush-associated
Sachalinobiini
Sachalinobiini is a small tribe of longhorn beetles (Cerambycidae) classified within the subfamily Lepturinae. The tribe is named for its association with Sakhalin Island and surrounding regions of the Russian Far East. Members of this tribe are characterized by their elongated bodies and antennae typical of lepturine cerambycids. The tribe contains limited described diversity, reflecting its restricted geographic distribution.
Cerambycidae Lepturinae Russian-Far-East Sakhalin endemic
Salpingogaster punctifrons
Rusty-tailed Spittlebug-killer
Salpingogaster punctifrons is a rare and elusive syrphid fly known from limited observations in Florida. The species exhibits Batesian mimicry of mud dauber wasps, with distinctive elongated abdominal morphology that sets it apart from typical hoverflies. Its common name references predatory behavior toward spittlebug nymphs.
mimicry predator rare endemic Florida
Saltonia incerta
Rare sheet-web-weaving spider, sole representative of monotypic genus Saltonia. Restricted to salt crusts of intermittent or dry lakes, streams, and rivers in desert southwestern North America. Previously presumed extinct following 1905 flooding of type locality at Salton Sea, but rediscovered in 1990s at multiple sites. Genetic analyses reveal significant population structure with two major clades (New Mexico versus California-northern Baja California) and minimal gene flow among isolated populations in fragmented desert salt flat habitats.
spider Araneae Dictynidae salt-flat desert endemic rare-species refugia population-genetics conservation monotypic-genus Salton-Sea salt-crust
Satyrium saepium
Hedgerow Hairstreak
Satyrium saepium, the hedgerow hairstreak, is a small butterfly in the family Lycaenidae endemic to western North America. The species exhibits significant geographic variation, with eleven recognized subspecies distributed across diverse habitats from coastal California to interior montane regions. Adults are active from spring through late summer and have been documented feeding on nectar from specific flowering plants. Larval development is tied to buckbrush (Ceanothus), a genus of flowering shrubs in the family Rhamnaceae.
western-North-America endemic hairstreak Rhamnaceae Ceanothus nectar-feeding subspecies-radiation
Sayiana
Sayiana is a genus of planthoppers in the family Derbidae, subfamily Otiocerinae, established by Ball in 1928. The genus contains four recognized species distributed in the Caribbean region, including Puerto Rico and Vieques Island. Members of this genus are small, delicate planthoppers characteristic of the Otiocerinae, which are known for their elongated bodies and often reduced wings.
Derbidae Otiocerinae planthopper Caribbean endemic
Scaphinotus aeneicollis
Coppery-collared Snail-eating Beetle
Scaphinotus aeneicollis, commonly known as the coppery-collared snail-eating beetle, is a species of ground beetle in the family Carabidae. It is a member of the Carabinae subfamily, which includes large predatory beetles often called 'snail hunters' or 'caterpillar hunters.' The species is restricted to the southern Appalachian region of North America, specifically in coniferous forest habitats in North Carolina. Adults are brachypterous (short-winged) and nocturnal.
Carabidae Carabinae Scaphinotus snail-eating-beetle brachypterous nocturnal coniferous-forest southern-Appalachia North-Carolina endemic predator specialist
Scaphinotus parisiana
Ozark Snail-eating Beetle
Scaphinotus parisiana, commonly known as the Ozark Snail-eating Beetle, is a species of ground beetle in the family Carabidae. It is endemic to the Ozark region, specifically found in Arkansas within the Ouachita Mountains. Adults are brachypterous (short-winged) and nocturnal, inhabiting deciduous forest habitats. The species is one of the snail-eating beetles in the genus Scaphinotus, which are specialized predators of terrestrial mollusks.
Carabidae ground-beetle molluscivore snail-predator brachypterous nocturnal endemic Ozarks Ouachita-Mountains Arkansas
Scaphinotus snowi
Snow's Snail-eating Beetle
Scaphinotus snowi is a species of ground beetle in the family Carabidae, commonly known as Snow's Snail-eating Beetle. It is endemic to North America with a documented range in Arizona, Colorado, New Mexico, and Utah. The species comprises two recognized subspecies: the nominate S. snowi snowi and S. snowi roeschkei (Roeschke's Snail-eating Beetle), which is restricted to Arizona. Like other members of the genus Scaphinotus, it is specialized for predation on snails.
ground-beetle snail-predator southwestern-United-States endemic
Scaphinotus unistriatus
One-lined Snail-eating Beetle
Scaphinotus unistriatus is a large, flightless ground beetle in the family Carabidae, commonly known as the one-lined snail-eating beetle. It is endemic to a restricted range in North Carolina, where it inhabits mixed forest habitats on slopes. Adults are nocturnal and brachypterous (short-winged), rendering them incapable of flight. Like other members of the genus Scaphinotus, it is specialized for predation on land snails, using its elongated head and jaws to extract prey from shells.
ground-beetle snail-predator flightless nocturnal endemic North-Carolina Carabidae Cychrini
Scaphomorphus collaris
Scaphomorphus collaris is a species of weevil in the family Curculionidae, subfamily Lixinae. The genus Scaphomorphus comprises lixine weevils, with several species exhibiting endemic distributions in Florida. Members of this genus are associated with specific host plants, including lupines.
endemic Florida Curculionidae Lixinae weevil Lupinis-ocalensis Scaphomorphus
Scaphomorphus subcylindricus
Scaphomorphus subcylindricus is a species of weevil in the family Curculionidae. It is endemic to Florida, where it has been collected in dry oak/pine sandhill woodland habitats. The species is associated with the endemic plant Lupinis ocalensis (Ocala lupine), on whose foliage it has been observed. The species was documented during field surveys in the Citrus Wildlife Management Area of Withlacoochee State Forest.
endemic Florida weevil Lixinae sandhill-habitat
Scardia anatomella
Pied Scardia
Scardia anatomella is a small moth in the family Tineidae, commonly known as the Pied Scardia. It was described by Augustus Radcliffe Grote in 1881 from specimens collected in the northeastern United States. The species belongs to a genus whose larvae are known to feed on fungi and decaying organic matter. Records indicate it is a regional endemic with limited distribution in the northeastern United States.
Lepidoptera Tineidae Scardia United-States endemic fungivore-genus
Schinia antonio
Schinia antonio is a small moth in the family Noctuidae, endemic to southern Texas. It has a wingspan of approximately 9 mm. The larvae are known to feed on species of Aphanostephus, a genus of flowering plants in the aster family. As a member of the genus Schinia, it likely exhibits the flower-associated behavior typical of this group, though specific adult behaviors remain poorly documented.
moth Noctuidae Heliothinae endemic Texas Aphanostephus flower-moth small-moth
Schinia arefacta
arefacta flower moth
Schinia arefacta, the arefacta flower moth, is a noctuid moth endemic to Florida and Georgia. It belongs to a large genus of flower moths known for their colorful appearance and close association with host plant flowers. The species was described by H. Edwards in 1885. Like other members of the genus Schinia, adults likely visit flowers for nectar and rest on their host plants.
endemic flower-moth Noctuidae Heliothinae North-America Florida Georgia
Schinia brunnea
A noctuid moth species described in 1913, restricted to desert regions of southern California. Adults fly from late summer to early fall. Very little is known about its biology beyond basic distribution and phenology.
Noctuidae Heliothinae endemic California desert-moth late-summer-flight Barnes-&-McDunnough-1913
Schinia buta
Schinia buta is a small noctuid moth endemic to the arid regions of southeast California and northwest Nevada. The species has a wingspan of approximately 28 mm. Its larvae are known to feed specifically on Brickellia californica, a member of the aster family. Like other members of the genus Schinia, adults likely rest on or near their host plant flowers.
Noctuidae Heliothinae endemic specialist-herbivore California Nevada desert-moth Brickellia
Schinia fulleri
Fuller's flower moth
Schinia fulleri is a small noctuid moth endemic to central Florida, described by McElvare in 1961. Adults have a wingspan of approximately 23 mm. The species is univoltine, with one generation per year. Larvae are specialist feeders on Balduina angustifolia, a member of the sunflower family.
endemic specialist univoltine Florida Noctuidae flower-moth
Schinia immaculata
Schinia immaculata is a small noctuid moth endemic to riparian habitats along the Colorado River in the Grand Canyon, Arizona. First described in 2004, it is one of the more recently recognized species in the diverse genus Schinia. Adults fly in spring with a wingspan of approximately 20 mm. The larval host plant remains unknown, though the species occurs in vegetation dominated by tamarisk, mesquite, acacia, and desert shrubs.
endemic riparian Grand-Canyon Noctuidae Heliothinae spring-moth recently-described
Schistocerca ceratiola
rosemary grasshopper
Schistocerca ceratiola, the rosemary grasshopper, is a poorly known species endemic to Florida. First described in 1928, it is rarely encountered except by researchers specifically seeking it. The species is a shrub-inhabiting grasshopper with a specific ecological association with Florida rosemary (Ceratiola ericoides). Its limited distribution and cryptic habits have contributed to its obscurity in the scientific literature.
endemic Florida-scrub shrub-inhabiting rarely-observed host-specific
Sclerobunus
harvestman
Sclerobunus is a genus of harvestmen (Opiliones: Laniatores) endemic to western North America. The genus was revised in 2014, which elevated several former subspecies to species rank, described five new species, and synonymized Cyptobunus under Sclerobunus. Species in this genus are primarily montane and show strong phylogeographic structure consistent with persistence in isolated mountain refugia during glacial cycles.
montane endemic phylogeography refugia harvestman western-North-America