Seasonal-abundance
Guides
Arhopalus
burnt pine longhorn beetle (A. ferus), black pine sawyer (A. rusticus)
Arhopalus is a genus of longhorn beetles (Cerambycidae: Spondylidinae: Asemini) distributed across the Northern Hemisphere, with several species introduced to the Southern Hemisphere as invasive pests of conifers. The genus comprises approximately 20 described species, with A. rusticus and A. ferus being the most extensively studied due to their economic importance. Species develop in dead or fire-damaged conifer wood, with some exhibiting strong attraction to burnt pine volatiles. Several species produce male-emitted aggregation-sex pheromones containing fuscumol and geranylacetone. Invasive populations in New Zealand, Australia, South America, and South Africa require monitoring at ports and sawmills for timber export compliance.
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te-statemethodological-state-stateepistemological-state-stateontological-state-stateaxiological-state-statepraxeological-state-statelogical-state-staterational-state-statereasonable-state-statesensible-state-statepragmatic-state-statepractical-state-statetheoretical-state-stateconceptual-state-stateempirical-state-stateexperimental-state-stateobservational-state-stateexperiential-state-statephenomenological-state-statehermeneutical-state-statecritical-state-statereflexive-state-statereflective-state-staterepresentative-state-stateEphuta
Ephuta is a widespread New World genus of velvet ants (Mutillidae) whose ecology remains poorly understood. The genus contains at least nine described species in Panama alone, with additional undescribed morphospecies. Ephuta species exhibit strong seasonal variation in abundance, peaking during the transition from dry to rainy season. As cleptoparasites, they develop in the nests of spider wasps (Pompilidae), with confirmed host records including Auplopus subaurarius in Brazil.
Monellia caryella
Blackmargined Pecan Aphid, Black Margined Aphid
Monellia caryella, commonly known as the blackmargined pecan aphid, is a small sap-feeding insect and significant pest of pecan (Carya illinoinensis) orchards in North America. Adults are distinguished by a prominent black stripe along the outer margin of their wings, which are held flat over the body. Populations typically increase from June to August, then decline after approximately three weeks; outbreaks on most cultivars usually subside without causing measurable damage, though the 'Cheyenne' cultivar is notably susceptible. The species is subject to substantial mortality from entomopathogenic fungi, particularly during autumn when environmental conditions favor fungal growth.
Pagurus acadianus
Acadian hermit crab
Pagurus acadianus is a marine hermit crab species in the family Paguridae, first described by J.E. Benedict in 1901 from specimens in the western Atlantic. It is distinguished from the closely related Pagurus bernhardus by morphological features including larger eyestalks, shorter chelae fingers, and sharper chelipeds. The species inhabits rocky intertidal zones and exhibits seasonal population fluctuations, with peak abundance in June and reduced activity from November through March. It has been documented as the most abundant hermit crab in some Maine localities, though 95.4% of museum records represent preserved specimens rather than living observations.
Trigoniulus
Asian millipede (informal, for T. corallinus)
Trigoniulus is a genus of millipedes in the family Trigoniulidae, established by Pocock in 1894. The genus contains at least 90 described species distributed primarily across tropical and subtropical regions of Asia. Species such as Trigoniulus corallinus and T. lumbricinus have been studied for their population ecology, revealing seasonal abundance patterns correlated with rainfall and temperature. The genus serves as a host for gut-associated microbes, including bacteria isolated from decaying plant habitats.