Metatrochanteral-organ
Guides
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.