Progonocimicidae

Definition

An extinct family of true bugs (Hemiptera) in the suborder Coleorrhyncha, known from Mesozoic fossil deposits spanning Europe, Asia, Australia, and South America. Progonocimicidae represent an early lineage of coleorrhynchans that predates the extant family Peloridiidae, sharing the characteristic rostrum arising from the posterior of the head but differing in wing venation and body proportions preserved in compression fossils.

Etymology

From Greek pro- (before, earlier) + gonos (seed, offspring, here implying lineage) + cimex (bed bug, historically used for true bugs) + -idae (family suffix)

Example

Fossil specimens of Progonocimicidae from the Jurassic deposits of Kazakhstan preserve detailed wing structure that helps clarify the transition between ancestral hemipteran morphology and the specialized features of modern moss bugs.

Related Terms

• Coleorrhyncha
• Peloridiidae
• Hemiptera
• true bugs
• moss bugs
• fossil insects
• Mesozoic insects

Usage Notes

Progonocimicidae is strictly a fossil taxon with no extant representatives; specialists distinguish it from Peloridiidae by Mesozoic age and more plesiomorphic wing characters. The family is sometimes grouped with Peloridiidae in discussions of coleorrhynchan evolution, but remains a separate family-level lineage. Geographic distribution of fossils suggests a formerly widespread Gondwanan-Laurasian range now restricted to relict southern hemisphere habitats in surviving peloridiids.