Cryptic-speciation
Guides
Asphondylia
gall midges, holly berry midge
Asphondylia is a large genus of gall midges in the family Cecidomyiidae, with over 300 described species distributed worldwide. All species in this genus induce galls on plants, particularly on flowers and flower buds. The genus is notable for the morphological similarity of its adult members, making species identification challenging without host plant or gall characteristics. Some species exhibit complex ecological relationships with fungi and parasitoids within their galls.
Boreocanthon simplex
Boreocanthon simplex is a dung beetle species in the family Scarabaeidae, native to western North America. It exhibits exceptional morphological and color variation compared to congeners, leading to speculation that it may represent multiple cryptic species. The species demonstrates remarkable ecological versatility, occurring across diverse habitats and elevations from below 300 m to above 3,000 m. Its remains have been recovered from the La Brea tar pits, indicating a long presence in the region.
Hypochilus petrunkevitchi
lampshade spider
Hypochilus petrunkevitchi is a lampshade spider endemic to the southern Sierra Nevada of California. It exhibits extreme intraspecific genetic divergence, with nuclear and mitochondrial lineages corresponding directly to drainage basins. Populations show >15% CO1 divergence between river basins despite striking male morphological stasis. The species is a textbook example of a short-range endemic with naturally limited dispersal ability.
Lepadidae
Goose Barnacles
A family of pedunculate (stalked) barnacles established by Charles Darwin in 1852, commonly known as goose barnacles. Comprises approximately five genera and over 20 described species. Members are exclusively marine, with worldwide distribution in warm temperate and tropical seas. The family includes the well-known genus Lepas (goose barnacles) and Conchoderma (whale barnacles).
Munididae
Munidid Squat Lobsters
Munididae is a family of squat lobsters (Decapoda: Anomura) taxonomically separated from Galatheidae in 2010. Members are predominantly deep-water taxa distinguished by a trispinose frontal edge to the carapace, a central rostrum, and two spines extending forward from above the eyes. The family exhibits substantial cryptic diversity, with species often distinguishable only by subtle morphological differences in telson shape and pereopod dactyli. Reproductive strategies vary, with Munididae typically producing numerous small eggs compared to related families.
Odontomachus relictus
Florida Scrub Trap-jaw Ant
Odontomachus relictus is a species of trap-jaw ant endemic to Florida, where it inhabits endangered scrub habitat on ancient sand ridges. It was described by Deyrup & Cover in 2004. Research suggests that populations on separate sand ridges may represent distinct species, which would make them among the rarest ants in North America. The species possesses the characteristic spring-loaded mandibles of the genus Odontomachus.
Phloeosinus punctatus
western cedar bark beetle
Phloeosinus punctatus is a bark beetle in the family Curculionidae, subfamily Scolytinae, known as the western cedar bark beetle. The species colonizes giant sequoia (Sequoiadendron giganteum) and California incense-cedar (Calocedrus decurrens) in the Sierra Nevada mountains of California. Females initiate gallery construction and mate monogamously. The beetle undergoes four larval instars, typically producing one generation per year under natural conditions. It has been observed to contribute to branch mortality in giant sequoia, particularly when trees are under environmental stress.
Prodiplosis
Prodiplosis is a genus of gall midges (Cecidomyiidae) comprising approximately 11 described species. Several species are economically significant agricultural pests, notably P. longifila, which infests citrus, solanaceous crops, and ornamental foliage. Members of this genus are characterized by complete metamorphosis and larval feeding on reproductive and vegetative tissues of host plants, causing necrosis and yield loss. Some species exhibit host specialization and cryptic genetic differentiation across geographic ranges.
Sabacon
Sabacon is a genus of harvestmen (order Opiliones) comprising the monotypic family Sabaconidae, with approximately 59 species recognized as of 2023. Species in this genus are primarily cave-dwelling or associated with moist, sheltered habitats in temperate and boreal regions of the Northern Hemisphere. The genus exhibits a disjunct distribution pattern with centers in North America (especially the southern Appalachians), Europe (Pyrenees, Alps), and Asia (Altai Mountains, Siberia). Several species have been described recently, indicating ongoing taxonomic discovery.
Sabaconidae
sabaconid harvestmen
Sabaconidae is a family of harvestmen (Opiliones: Dyspnoi) comprising approximately 50 described species. The family exhibits a disjunct distribution spanning eastern North America and temperate Eurasia, with notable diversity in the southern Appalachian Mountains and the Altai Mountains of Russia. Species-level taxonomy within the family has been complicated by cryptic diversification, particularly in widespread species such as Sabacon cavicolens, which shows evidence of multiple allopatric lineages separated by vicariance and rare long-distance dispersal events.