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Apocleinae
Asilinae
Dasypogoninae
Dioctriinae
Laphriinae
Laphystiinae
Leptogastrinae
Ommatiinae
Stenopogoninae
Stichopogoninae
Trigonomiminae

Key to the genera of the Nearctic Trigonomiminae

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Trigonomiminae

References: Artigas, J.N. & Papavero, N. (1989): The American genera of Asilidae (Diptera): Keys for identification with an atlas of female spermathecae and other morphological details. III. Key to the genera of Trigonomiminae Enderlein, with description of a new genus and species. - Boletin de la Sociedad de Biologia de Concepcion 60: 35-41; Concepcion.


1 Antenna with two-segmented style . . . . . Haplopogon Engel, 1930
Antenna with two-segmented style  lateral view
 
-Antenna without or with one-segmented style.
Antenna without or with one-segmented style  Postpedicel short, nearly orbicular, considerably larger and wider than pedicel
2


2 Postpedicel elongate, spindle-shaped, two or more times combined length of scape and pedicel . . . . . Holcocephala Jaennicke, 1867
Antenna with first flegellomere elongate, spindle-shaped, two or more times combined length of scape and pedicel  lateral view
 
-Postpedicel extremely short, small, dilated, bulb-like, drawn out apically into an extremely long, bristle-like style, longer than the head.
Postpedicel short, nearly orbicular, considerably larger and wider than pedicel
3


3 Postpedicel twice as long as combined length of scape and pedicel and pollinose. Frons without longitudinal sunken area. Head in lateral view rounded below antennae and obliquely flattened above, the facial vrease specially deep. Upper section of M2 very short or fused to M3 . . . . . Orrhodops Hull, 1958
Postpedicel twice as long as combined length of scape and pedicel  Frons without longitudinal sunken area
 
-Postpedicel short, nearly orbicular, considerably larger and wider than pedicel. Frons with a longitudinal sunken area and upper face with a longitudinal furrow. Upper section of M2 long . . . . . Bromleyus Hardy, 1944
Postpedicel short, nearly orbicular, considerably larger and wider than pedicel  Frons with a longitudinal sunken area
 

 

 

 

Contents: © Fritz Geller-Grimm, Jorge N. Artigas, 2007
Layout & images: © Fritz Geller-Grimm, 2007