title: Larval morphology of the lesser housefly, Fannia canicularis.
abstract: The morphology of all larval instars of Fannia canicularis (Linnaeus) (Diptera: Fanniidae) is documented using a combination of light and scanning electron microscopy. The following structures are documented for all instars: antennal complex; maxillary palpus; facial mask; cephaloskeleton; ventral organ; anterior spiracle; Keilin's organ; posterior spiracle; fleshy processes, and anal pad. Structures reported for the first time for all instars include: two pairs of lateral prominences on the prothoracic segment; additional ventrolateral prominences on the second thoracic segment, and a papilla at the base of the posterior spiracle. Other structures reported for the first time are anterior spiracles in the first instar and a serrated tip on the mouthhook in the second instar. A trichoid sensillum on the posterior spiracular plate, representing a sensory organ otherwise unknown in the Calyptratae, is described in the second and third instars. Results are discussed and compared with existing knowledge on dipteran larval morphology.
authors.affiliation: Department of Animal Ecology, Institute of Ecology and Environmental Protection, Nicolaus Copernicus University, Gagarina 9, Toruń, Poland. hydrotaea@gmail.com
authors.forename: A
authors.initials: A
authors.lastname: Grzywacz
authors.forename: T
authors.initials: T
authors.lastname: Pape
authors.forename: K
authors.initials: K
authors.lastname: Szpila
mesh_terms: D000818:Animals; D004175:Diptera / Q000145:classification / Q000648:ultrastructure*; D007814:Larva / Q000145:classification / Q000648:ultrastructure; D013045:Species Specificity