KEYS TO SWEDISH GENERA AND SPECIES OF DOLICHOPODIDAE

by I.Ya. Grichanov

Igor Grichanov, All-Russian Institute of Plant Protection, Podbelskogo 3, St. Petersburg, Pushkin, Russia.E-mail: grichanov@hotbox.ru
Last updated: 6 May 2003 

Genus Sybistroma Meigen
See pictures here
1. Males: hypopygium present ... 2
Females: hypopygium absent ... 4
2.Antennal postpedicel not longer than high; stylus of uniform thickness throughout, with apical segment 5 to 6 times as long as basal; apical segment of fore tarsus enlarged, laterally compressed; 3.75-4.75. Fig. 139 ... crinipesStaeger
Postpedicel at least 1.5 times longer than high; stylus normal, tapering, with apical segment at most 2.5 times as long as basal one ... 3
3. Fore tarsus simple; 3.5-4.0. Fig. 141 ... obscurella(Falln)

Fore tarsus with 4th segment short and broad, 5th greatly enlarged, flattened and black; 3.5-5.5. Fig. 140 ... discipes(Germar)

4. Metaepimeron black; 4.0-4.5 ... crinipesStaeger

Metaepimeron yellow ... 5

5. Midtarsus distinctly less than 1.5 times as long as tibia; greatest distance between M1+2 and R4+5 less than 3 times as that at their tips; proboscis dark; 3.5-4.0 ... obscurella(Falln)

Midtarsus quite 1.5 times as long as tibia; greatest distance between M1+2 and R4+5 more than 3 times as that at their tips; proboscis brownish yellow; 4.0-4.75 ... discipes(Germar)


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