The Horse Flies and Deer Flies of Canada and Alaska PDF Download

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The condition of the surface of the fly, especially the absence of broken appendages and the lack of abrasion (evident as loss of hairs and pruinosity) and discoloration, is usually a measure of the care in collection. [...] The eyes offemales are separated medially by the frons, which in most taxonomic literature on Tabanidae is considered to extend from the top of the head, or vertex, to the subcallus at the lower inner angle of the eye (Fig. [...] The antennae are of major importance in species identification and in the classification of the family. [...] In the case of many species of the Chrysopsinae the 23 scape and pedicel are slender and elongate, and the basal flagellomere is similarly slender (Fig. [...] The proboscis offemale Tabanidae is composed (from ventral side upward) of the labium, a pair of blade-like maxillae connected basally to a pair of 2-segmented maxillary palpi, the mandibles (another pair of thin blades that are serrated at the apex), the hypopharynx, and the labrum.