Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
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Family Nycteribiidae

Nycteribiidae - Basilia bat fly - Basilia boardmani - female bat fly - Basilia boardmani - female bat fly - Basilia boardmani - female Basilia forcipata Basilia forcipata Basilia antrozi - Basilia
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Diptera (Flies)
No Taxon (Calyptratae)
Superfamily Hippoboscoidea
Family Nycteribiidae
Explanation of Names
Nycteribiidae Samouelle 1819
6 spp. in a single genus in our area, ~280 spp. in 11 genera of 3 subfamilies total(1)
1.5-5.0 mm(2)
Found in the fur of bats
Adults are obligate blood feeders on bats; larvae remain in mother until ready to pupate (as in other Pupipara)
Life Cycle
Females give birth to one (sometimes more) offspring in a process that resembles true viviparity. The fly leaves the host only to deposit the larvae in a safe place to pupate. Wingless (they can afford it because their hosts return to the same roost regularly.) --B. Zvolanek, FB comm.
Works Cited
1.Checklist of World Nycteribiidae (Diptera: Hippoboscoidea)
Graciolli G., Dick C.W. 2018.
2.Manual of Nearctic Diptera Volume 2
Varies for each chapter; edited by J.F. McAlpine, B.V. Petersen, G.E. Shewell, H.J. Teskey, J.R. Vockeroth, D.M. Wood. 1987. Research Branch Agriculture Canada.