Laphriinae
References: Artigas, J.N. & Papavero, N. & Pimentel, N.P. (1988): The American genera of Asilidae (Diptera): Keys for identification with an atlas of female spermathecae and other morphological details. IV. Key to the genera of Laphriinae Macquart (except tribe Atomosiini Hermann). - Boletim do Museu Paraense Emilio Goeldi. Serie Zoologia 4(2): 211-256; Belem. Artigas, J.N. & Papavero, N. & Serra, A.L. (1991): The American genera of Asilidae (Diptera): Keys for identification with an atlas of female spermathecae and other morphological details. VI. Tribe Atomosiini Hermann (Laphriinae), with descriptions of two new genera and three new species, and a catalogue. - Gayana. Zoologia. Universidad de Concepcion, Instituto Central de Biologia 55(1): 53-85; Concepcion.
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1.
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Postmetacoxal area membranous.
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»2
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| Postmetacoxal area with a transverse sclerotized bridge.
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»7
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2.
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Face more or less flat, never excavated or gibbose. Proboscis almost triangular in cross-section . . . . . Dasytrichini: Orthogonis Hermann, 1914
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| Face excavated and gibbose. Proboscis either subcylindrical, with tuft of long bristles above, or laterally or dorsoventrally compressed (at least in apical half).
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»3
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3.
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Proboscis clearly flattened laterally . . . . . Laphriini
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4
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| Proboscis clearly flattened dorsoventrally, at least on its apical half . . . . . Andrenosomini
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5
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4.
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Hind femur thickened, with one or more ventral tubercles which sometimes bear a spine, and femur occasionally with a basal spur-like swelling . . . . . Lampria Macquart, 1838
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| Hind femur never as above . . . . . Laphria Meigen, 1803 and Choerades Walker, 1851
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5.
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R2+3 and R4 connected by short a extra crossvein (three submarginal cells present) . . . . . Pogonosoma Rondani, 1856
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| R2+3 and R4 not connected by a short extra crossvein (only two submarginal cells present)
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»6
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6.
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Ambient vein absent or evanescent . . . . . Cerotainiops Curran, 1930
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| Ambient vein normally developed . . . . . Andrenosoma Rondani, 1856
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7.
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Large (over 25 mm long) fuzzy flies, resembling bumblebees. Entire body densely haired. Second palpal segment enormously swollen and clavate . . . . . Dasylechiini: Dasylechia Williston, 1907
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| Small, relatively bare, generally black flies. Other combinations of characters . . . . . Atomosiini
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8
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8.
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Anatergite with soft or coarse hairs, but never with spine or spike-like bristles . . . . . Atomosiella Wilcox, 1937
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| Anatergite with characteristic spine or spike-like bristles.
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9
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9.
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Antenna with two flagellomeres . . . . . Atoniomyia Hermann, 1912
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| Antenna with one flagellomere.
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10
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10.
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Frons extremely widened, with slopes definitely divergent. Scape several times longer than pedicel . . . . . Cerotainia Schiner, 1868
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| Frons relatively narrow, with convergent slopes. Scape never several times longer than pedicel . . . . . Atomosia Macquart, 1838
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Contents: © Jorge N. Artigas et al., Fritz Geller-Grimm, 2003
Layout & images: © Fritz Geller-Grimm, 2003