Pegoscapus

Distinguished from other fig wasp genera by the male seminal vesicle morphology: a posterior seminal vesicle portion for ejaculation that ensures only small amounts of spermatozoa are released per copulation. This two-part seminal vesicle structure is unique among fig wasp genera. Species-level identification requires examination of spermatozoa length and thickness, which varies between species.

Strictly associated with fig inflorescences (syconia) of Ficus species. Develops entirely within the enclosed cavity of fig fruits. Found in tropical and subtropical regions where host fig trees occur.

Native to the Americas, ranging from Florida and Mexico in the north to Argentina in the south. Records include Minas Gerais (Brazil) and Panama.

Reproductive activity synchronized with fig phenology; receptive figs available year-round due to asynchronous fig development in tropical regions. Developmental period extends to 27-32 days under favorable conditions. Winter temperatures prolong development but do not induce diapause.

• Ficus - obligate pollinator mutualismSpecifically pollinates species in section Americana of subgenus Urostigma. Each wasp larva develops within a single fig ovule, feeding on developing seed tissues.
• Parasitodiplogaster citrinema - hostInternal necrophagous nematode parasite. Second-stage juveniles emerge from eggs in wasp ovaries, penetrate adult females at eclosion, and develop into dauers. Adults become necrophagous in wasp cadavers, emerging 72-240 hours after host death.

Females enter receptive syconia through the ostiole, losing wings and some antennae in the process. Eggs are oviposited into pistillate floret ovaries, forming galls. Larvae develop while feeding on seed tissues. After 27-32 days, wingless males emerge first, search for females in galls, mate, and chew exit tunnels before dying. Females emerge, collect pollen from anthers, and disperse to new receptive syconia. The entire cycle occurs within a single fig fruit generation.

Females use antennae to assess syconium developmental stage by testing the looseness of ostiolar scales before entry. After oviposition, females spread pollen near oviposition sites. Multiple foundresses typically enter and oviposit in the same syconium simultaneously. First foundress to oviposit in some species exhibits lethal aggression toward competitor females. Sequential oviposition when multiple foundresses present: females lay most male eggs first followed by female eggs ("slope" strategy) to auto-adjust sex ratios.

Obligate pollinator of Ficus species in section Americana. Enables fig seed production through pollen transport between syconia. Acts as host for nematode parasites. Serves as food resource within fig-based food webs.

Maintains fig tree populations that serve as keystone resources in tropical ecosystems, producing fruit year-round that supports diverse frugivore communities. Climate change poses threat: predicted temperature increases may reduce wasp lifespan and dispersal success, potentially disrupting tropical forest ecosystems.

• Other Agaonidae generaPegoscapus males uniquely possess a two-part seminal vesicle with a posterior portion specialized for controlled ejaculation; other genera lack this posterior portion.
• Non-pollinating fig waspsPegoscapus actively collects and transports pollen with specialized thoracic pockets; non-pollinating fig wasps lack pollen-carrying structures and do not contribute to fig pollination.

• fig wasp
• pollinator
• mutualism
• Hymenoptera
• Agaonidae
• Neotropical
• Ficus
• obligate mutualism
• cryptic species
• local mate competition
• haplodiploidy
• sex ratio bias

• BugGuide
• Wikipedia
• GBIF taxonomy match
• iNaturalist taxon
• NCBI Taxonomy
• Catalogue of Life
• Parasitodiplogaster citrinema is an internal necrophagous species of the pollinating fig wasp Pegoscapus tonduzi
• The Behavior and Morphology of the Fig Wasps Pegoscapus Assuetus and P. Jimenezi:Descriptions and Suggested Behavioral Characters for Phylogenetic Studies