Paracyphononyx funereus

Spider wasps in the genus Paracyphononyx are known to parasitize spiders, with larvae feeding on host hemolymph. The host is typically paralyzed by the adult female wasp and remains alive until the larva completes development.

• Spiders (Araneae) - parasitoidKoinobiont ectoparasitoid; host remains mobile after parasitization

Based on congeneric species, development likely involves: egg laid on paralyzed spider host, larval feeding on host hemolymph through multiple instars, host death and consumption at final larval stage, cocoon construction, and pupation. The entire cycle from egg to adult emergence has been observed to take approximately 52 days in related species under laboratory conditions.

Females are known to paralyze spider hosts with their sting and deposit eggs on the abdomen. The host spider recovers mobility and continues normal activity while the larva feeds. This koinobiont strategy contrasts with idiobiont parasitoids that permanently immobilize hosts. Whether P. funereus larvae manipulate host behavior to construct protective silk structures, as observed in some congeners, remains unconfirmed.

As a parasitoid of spiders, this species contributes to population regulation of spider communities. The koinobiont lifestyle may reduce predation risk for the developing wasp larva by maintaining host mobility and avoiding detection by ants and other predators.

• Paracyphononyx scapulatusCongener with documented koinobiont ectoparasitoid behavior on wolf spiders (Lycosidae); morphological and ecological similarities likely but specific distinguishing characters for P. funereus unconfirmed in available sources

• Hymenoptera
• Pompilidae
• spider wasp
• parasitoid
• koinobiont
• Araneae parasite

• BugGuide
• GBIF taxonomy match
• iNaturalist taxon
• NCBI Taxonomy
• Catalogue of Life
• Hymenoptera | Blog - Part 7
• threatened species | Blog - Part 2
• beetle species | Blog