DipteraConopidae – Thick-headed Flies

Physoconops bulbirostris

This record describes Physoconops bulbirostris (species). Recorded family: Conopidae. Recorded order: Diptera.

Identification and Appearance

Physoconops bulbirostris - Physoconops bulbirostris
Contributed by Aaron Schusteff
FeatureDetails
HeadFrons entirely black; cheeks brown-to-black (at least in posterior portion); face, including facial grooves, whitish; proboscis fairly long (reaching end of 2nd antennal segment).
ThoraxBlack; two fairly large white, rectangular, pollinose spots at anterior corners of dorsum (i.e. humeral dashes); pollinose pleural stripe occupies lower half of pleura only (terminates at suture between upper and lower halves).
AbdomenBlack, with narrow posterior white pollinose bands. In females, theca quite large. Both P. bulbirostris and (the dark variant of) P. excisus are mostly black and have females with very large thecas. However, Camras (1955) emphasizes (on pg. 171) that P. excisus has a very distinct uninterrupted postvertical pollinose stripe connecting the postorbitals (i.e running along the rear edge of the upper half of the head)...whereas in P. bulbirostris , the corresponding stripe is (usually) interrupted in the middle or absent.

Classification

Kingdom
Animalia
Phylum
Arthropoda
Class
Insecta
Order
Diptera (Flies)
Superfamily
Sciomyzoidea
Family
Conopidae (Thick-headed Flies)
Subfamily
Conopinae
Genus
Physoconops

Imported taxonomy record. Source availability varies; see the source references and editorial policy below.

Habitat and Range

Geographic Range

Indiana to New Jersey, s. to Texas and Florida [extending southward to Paraguay...see catalog entry here ].

Additional species information

Species notes from the sources

Etymology: From Latin: bulbi = thickened, bulbous; rostr- = beak, rostrum In his original description, Loew remarked that the proboscis was noticeably thickened at base. In morphological terminology of Diptera, the word "rostrum" refers to the basal portion of the proboscis.

About Flies: the wider group

Order-level background for Diptera, the group containing Physoconops bulbirostris. Species-specific details appear above.

Group overview

Diptera includes over 150,000 described species of flies, mosquitoes, and midges. Mosquitoes are the deadliest animal on Earth (CDC). Malaria alone causes ~249 million cases and over 608,000 deaths annually, mostly children under 5 (WHO). Vector-borne diseases account for over 17% of all infectious diseases, causing 700,000+ deaths per year.

Ecological role of the group

Despite their disease impact, flies are critical decomposers and pollinators. Hoverflies alone pollinate hundreds of crop and wildflower species. Flies are also the primary food source for many birds, bats, and fish. Forensic entomology relies heavily on fly species for crime scene analysis.

Economic and practical significance of the group

In the U.S., vector-borne disease cases tripled between 2004-2016, with over 640,000 cases reported in that period (CDC). Tickborne diseases doubled from 22,000 to 48,000 annual reports. Globally, mosquito-borne diseases cost billions in healthcare and lost productivity.

Recorded sources for this group: WHO, CDC, PNAS. Imported estimates may describe particular regions or reporting periods.

Explore Diptera families and species →

Photos of Physoconops bulbirostris (5)

Physoconops bulbirostris - photo 1
Contributed by Aaron Schusteff
Physoconops bulbirostris - photo 2
Contributed by Aaron Schusteff
Physoconops bulbirostris - photo 3
Contributed by Aaron Schusteff
Physoconops bulbirostris - photo 4
Contributed by Aaron Schusteff
Physoconops bulbirostris - photo 5
Contributed by Aaron Schusteff

Photo credits: Contributed by Aaron Schusteff

Frequently Asked Questions About Physoconops bulbirostris

What is Physoconops bulbirostris?

Physoconops bulbirostris is a species in the family Conopidae, within the order Diptera.

How do you identify Physoconops bulbirostris?
FeatureDetails
HeadFrons entirely black; cheeks brown-to-black (at least in posterior portion); face, including facial grooves, whitish; proboscis fairly long (reaching end of 2nd antennal segment).
ThoraxBlack; two fairly large white, rectangular, pollinose spots at anterior corners of dorsum (i.e. humeral dashes); pollinose pleural stripe occupies lower half of pleura only (terminates at suture between upper and lower halves).
AbdomenBlack, with narrow posterior white pollinose bands. In females, theca quite large.
Where is Physoconops bulbirostris found?

Range: Indiana to New Jersey, s. to Texas and Florida [extending southward to Paraguay...see catalog entry here ].

How we use and review source data. Source count does not imply independent verification.

Photo credits: Contributed by Aaron Schusteff. Contributors retain copyright over their individual contributions.