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Photos of insects and people from the 2022 BugGuide gathering in New Mexico, July 20-24

National Moth Week was July 23-31, 2022! See moth submissions.

Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

Photos of insects and people from the 2019 gathering in Louisiana, July 25-27

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Family Bombyliidae - Bee Flies

Hemipenthes sp - Hemipenthes Bee Fly - Villa Xenox tigrinus Bee Fly Bee Fly - Exoprosopa decora Is this a Bombylius major - Greater Bee Fly - Bombylius major Poecilanthrax  lucifer?  - Poecilanthrax Exoprosopini?
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Diptera (Flies)
No Taxon (Orthorrhapha)
Superfamily Asiloidea
Family Bombyliidae (Bee Flies)
Explanation of Names
Bombyliidae Latreille 1802
Numbers
ca. 800 spp. in ~70 genera of 13 subfamilies in our area(1), >5,000 spp. in >230 genera of 15 subfamilies worldwide(2)(Yeates & Lambkin 2004)
Overview of our fauna (* –taxa not yet in the guide; classification adapted from(2))
Family BOMBYLIIDAE
Subfamily USIINAE Apolysis
Subfamily PHTHIRIINAE
Subfamily TOXOPHORINAE
Tribe Gerontini Geron (subgenera Empidigeron · Geron)
Subfamily BOMBYLIINAE
Subfamily ANTHRACINAE
Size
body 4-40 mm
Identification
Key to e. Canada spp.(3)
Key to e. US spp. here; checklist
Review of world fauna(4)
Range
cosmopolitan; most diverse in semi-arid and arid environments (Yeates & Lambkin 2004)
Habitat
females hover over host nest, often in dry areas(5)
Food
larvae are mostly external parasitoids of holometabolous larvae (esp. soil-dwelling Coleoptera, Hymenoptera, Lepidoptera, Diptera); a few are endoparasites, predators (esp. on grasshopper eggs), or kleptoparasites; adults take nectar/pollen(5)(6)(1)(7)
Life Cycle
larvae undergo hypermetamorphosis: 1st instar larva is active and penetrates the host's nest, then turns into a sedentary parasitoid; pupa is equipped with spines/spikes to drill out of the nest(5)
Pupal exuvia Pupal shell of host, fly pupal shell and adult
Remarks
the oldest fossils date ~140 mya(6)
See Also
Syrphidae are not as hairy and never have a long proboscis
Internet References
Family overview (Yeates & Lambkin 2004)