Trichobius

Gervais, 1844

bat flies

Trichobius is a of (: ) containing more than 60 described . These obligate are exclusively associated with bats, exhibiting varying degrees of . Species within the genus display diverse morphological and ecological traits, with some showing strong preferences for particular species, roost , or host sexes.

Pronunciation

How to pronounce Trichobius: /traɪˈkoʊbiəs/

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Identification

Distinguished from related by combinations of thoracic , , and male . The 'dugesii' group shares certain thoracic characteristics but can be differentiated by specific setal arrangements on the and discal regions. Identification to species level requires examination of microscopic characters including setal length and patterns, metasternal lobe structure, and genitalic .

Habitat

Strictly associated with bat roosts including caves, hollow trees, buildings, and houses. Larviposition sites include roost walls and substrates where pupal development occurs. Some occupy specific microhabitats within roosts.

Distribution

Widespread in the Neotropics with records from Mexico, Honduras, Brazil, Chile, and Venezuela. Specific documented localities include Jalisco (Mexico), Francisco Morazán and La Mosquitia (Honduras), Rio de Janeiro state (Brazil), and Araucanía region (Chile).

Host Associations

Phyllostomus hastatus - primary T. longipes shows >99% on this in Rio de Janeiro
Carollia perspicillata - parasitized by T. joblingi
Sturnira lillium - parasitized by T. joblingi
Myotis velifer - of T. major
Desmodus rotundus - new record for T. parasiticus in Chile
Choeronycteris mexicana - of undescribed Trichobius from Jalisco

Life Cycle

with internal larval development. Females retain and developing in the , then mature larvae (larviposition) on roost substrates while are foraging. develop on roost walls; occurs after 22-24 days under laboratory conditions for related streblids.

Behavior

Exhibits -finding using specific sensory stimuli to locate bat hosts. Larviposition timing is synchronized with host foraging periods. Some display sex-biased , with female hosts more heavily infested than males. behavior is adapted for movement on and between bat hosts rather than sustained independent flight.

Ecological Role

Obligate of bats; contributes to bat- diversity. Co-occurs with other on shared , forming component parasite communities.

Similar Taxa

AspidopteraBoth are parasitizing phyllostomid bats; Aspidoptera differs in shape and male terminalia structure
StreblaCo-occurring with similar ; differs in thoracic and abdominal patterns
NeotrichobiusRelated ; previously known only from Venezuela until northernmost record in Honduras
ParatrichobiusMorphologically similar ; distinguished by specific thoracic and genitalic characters