Hippoboscoidea

Louse Flies, Tsetse Flies, and Allies, Pupipara

Family Guides

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is a superfamily of calyptrate flies comprising four : (), Hippoboscidae (louse flies or ked flies), Nycteribiidae (bat flies), and Streblidae (bat flies). All members are obligate blood-feeding of mammals or birds. The superfamily is distinguished by adenotrophic viviparity, in which larvae develop internally and are deposited as fully-formed . Some members serve as for significant , including that cause and .

Damaeus by (c) Alexis Tinker-Tsavalas, some rights reserved (CC BY), uploaded by Alexis Tinker-Tsavalas. Used under a CC-BY license.Epidermoptidae by (c) Cricket Raspet, some rights reserved (CC BY), uploaded by Cricket Raspet. Used under a CC-BY license.Psoroptidae by (c) Oleksii Vasyliuk, some rights reserved (CC BY), uploaded by Oleksii Vasyliuk. Used under a CC-BY license.

Pronunciation

How to pronounce Hippoboscoidea: //ˌhɪp.oʊˌbɒsˈkɔɪ.di.ə//

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Identification

can be distinguished from other Diptera by the combination of reduced or absent wings (wingless forms common in bat flies), dorsoventrally flattened bodies adapted for clinging to fur or feathers, and for blood-feeding. of Hippoboscidae often retain functional wings but shed them after locating a host; Nycteribiidae and Streblidae are typically wingless with spider-like appearance and reduced or absent. The presence of adenotrophic viviparity—females giving birth to single, fully-developed rather than laying —is diagnostic for the superfamily.

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Habitat

Primarily found in association with vertebrate , including mammals (bats, ungulates, primates) and birds. Bat flies (Nycteribiidae, Streblidae) inhabit bat roosts and remain on host bodies. () occur in savanna and woodland of sub-Saharan Africa. Louse flies (Hippoboscidae) occupy diverse environments corresponding to their specific host ranges, including seabird colonies, raptor nests, and mammalian habitats.

Distribution

in distribution with -level variation. restricted to sub-Saharan Africa. Hippoboscidae widespread globally, particularly diverse in association with seabirds and raptors. Nycteribiidae more diverse in the Eastern Hemisphere; Streblidae more diverse in the Western Hemisphere. The Orinoquia Region of Colombia and Venezuela harbors documented diversity of 124 Streblidae and 12 Nycteribiidae .

Diet

Obligate blood-feeding . feed exclusively on vertebrate blood from mammals or birds. Larvae are nourished internally by secretions from female milk glands during adenotrophic development.

Host Associations

  • bats - primary Nycteribiidae and Streblidae are exclusively bat
  • ungulates - primary feed on wild and domestic mammals including cattle, pigs, and antelope
  • humans - incidental transmit human
  • birds - primary Hippoboscidae includes specialized on raptors, seabirds, and passerines

Life Cycle

Adenotrophic viviparity: females produce one at a time, which is fertilized and retained in the uterus. Larvae hatch in utero and pass through three instars while feeding on milk secreted by female accessory glands. The mature third-instar larva () is deposited onto a substrate, immediately forms a , and pupates without further feeding. emerge from pupae and must locate a to feed. Females can produce 8-10 offspring in a lifetime; a single mating provides sperm stored in the spermatheca for life.

Behavior

High specificity documented, with 76% of bat fly showing monoxenic associations (single host species). Ecomorphological specialization occurs in bat flies: wing inhabit wing , fur runners move on body fur, and fur swimmers occupy long fur areas such as the neck. Hippoboscidae can serve as phoretic for parasitic feather lice (Philopteridae), facilitating and host-switching. Males initiate mating upon detecting female , with copulation lasting up to two hours.

Ecological Role

that regulate through blood-feeding and transmission. Serve as for (Trypanosoma spp.) causing African animal and human . Contribute to understanding co-evolutionary dynamics between and vertebrate hosts. Phoretic associations with feather lice influence diversification patterns over evolutionary timescales.

Human Relevance

() are major of human (sleeping sickness) and (African animal ), rendering parts of Africa uninhabitable for humans and livestock. Hippoboscidae affect poultry and livestock through blood loss and secondary . Research on tsetse reproductive has identified potential control targets, including bacterial endosymbionts (Wigglesworthia glossinidia, Sodalis glossinidius) required for vitamin synthesis and larval development.

Similar Taxa

  • MystacinobiidaeFormerly included in but now placed in Oestroidea; differs in reproductive and phylogenetic affinities
  • MormotomyiidaePreviously associated with but now classified in Ephydroidea based on morphological and molecular evidence

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