Orchesellidae
Guides
Orchesella alpa
Orchesella alpa is a species of slender springtail first described in 1977 by Christiansen and Tucker. It belongs to the family Orchesellidae (formerly placed in Entomobryidae) within the order Entomobryomorpha. The species is known from multiple geographic regions across North America and the Caribbean.
Orchesellinae
Orchesellinae is a subfamily of springtails (Collembola) in the family Orchesellidae. Members are distinguished from other Entomobryidae by a fourth abdominal segment shorter than 1.8 times the length of the third segment, generally more than four antennal segments, recurved labral setae, and a complex metatrochanteral organ bearing at least 11 spine-like setae. The subfamily includes genera such as Dicranocentrus, Australotomurus, and Orchesellides, with distributions ranging from holotropical to Australian endemic and disjunct patterns.