Conopinae

Members of Conopinae can be distinguished from other conopid subfamilies by their characteristically enlarged, bulbous head with a broad frons. The head is typically wider than the thorax, creating a distinct 'thick-headed' appearance. Antennae are three-segmented with a terminal arista. The abdomen is often elongated and may display banded coloration. Wing venation includes a characteristic conopid pattern with reduced anal lobe.

Widespread across the Holarctic region, with records from North America, Europe, and Asia. Individual genera show varying distributions: Conops is primarily Palearctic, Physocephala occurs in both Nearctic and Palearctic regions, while Physoconops and Leopoldius have more restricted ranges.

Adult activity peaks during summer months in temperate regions, generally from June through August. Flight periods vary by latitude and elevation, with some species active into early autumn in southern ranges.

Adults have been observed feeding on nectar from flowers, particularly those of the Asteraceae and Apiaceae families. Larvae are internal parasitoids of Hymenoptera, with documented hosts including bumble bees (Bombus), honey bees (Apis), and various solitary bees and wasps.

• Bombus - parasitoidlarval development within host
• Apis - parasitoidlarval development within host
• various solitary bees and wasps - parasitoidlarval development within host

Females intercept host hymenopterans in flight, depositing a single egg through the intersegmental membranes using a specialized, hardened ovipositor. The larva hatches and develops internally, eventually killing the host. Pupation occurs within the host remains or in soil. The life cycle is typically univoltine, with adults emerging the following season.

Females exhibit an aggressive pursuit behavior, actively chasing and attacking host hymenopterans in flight. Males are frequently observed patrolling flowers for nectar and seeking mates. Adults are diurnal and are known for their fast, agile flight. Some species have been observed hovering near flowers or host nesting aggregations.

As parasitoids of bees and wasps, Conopinae species function as population regulators of their hymenopteran hosts. They contribute to pollinator community dynamics, though their impact on beneficial pollinator populations may be locally significant. Adult flower visitation provides minor pollination services.

Some species parasitize commercially managed honey bees, potentially affecting apiary productivity. The subfamily is of interest in studies of parasitoid-host coevolution and pollinator health. No direct medical or veterinary significance to humans.

• Myopinaelacks the characteristically enlarged, bulbous head of Conopinae; head typically narrower and more prognathous
• Stylogasterinaepossesses a highly modified terminal abdominal segment with a long, rigid piercing structure not present in Conopinae

• Diptera
• Conopidae
• parasitoid
• pollinator parasite
• Hymenoptera parasite
• thick-headed fly
• internal parasitoid
• bee parasite
• wasp parasite

• BugGuide
• Wikipedia
• iNaturalist taxon
• NCBI Taxonomy
• Catalogue of Life