Oregon-fauna
Guides
Emblyna oregona
Emblyna oregona is a species of mesh-web weaver spider in the family Dictynidae, described by Gertsch in 1946. The species epithet "oregona" indicates an association with Oregon, suggesting a Pacific Northwest distribution. As with other members of the genus Emblyna, this species constructs irregular, tangled mesh webs rather than the spiral orb webs characteristic of many spiders. The genus Emblyna belongs to the family Dictynidae, a group of small to medium-sized spiders known for their cribellate silk production and preference for vegetation-dwelling habits.
Pleocoma
rain beetles
Pleocoma is the sole extant genus of Pleocomidae, a family endemic to the Pacific states of North America. These beetles are notable for their extreme subterranean lifestyle, with adults emerging only during fall and winter rains to mate. The genus name derives from Greek words for 'abundant hair,' referring to the dense ventral hair covering. Adults are non-feeding, while larvae are root-feeders with exceptionally long development periods of up to 13 years.
Scarabaeoidearain-beetlessubterraneannon-feeding-adultslong-lived-larvaepheromone-mediated-matingendemicNearcticrelictual-distributionCretaceous-originpest-of-Christmas-treeslamellate-antennaeflightless-femalesrain-triggered-emergenceCalifornia-faunaOregon-faunaWashington-faunaroot-feeding-larvaeextreme-seasonalitylight-attracted-malesThricolema
Thricolema is a monotypic genus of leaf beetles in the subfamily Synetinae, containing only Thricolema anomala. Adults are associated with Calocedrus decurrens (incense-cedar) and have been recorded from California and Oregon. The genus is distinguished from the similar Syneta by tarsal claw morphology in females.