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 Systenus Loew

1. M1+2 and R4+5 veins strongly convergent, their tips separated by not more than 1/3 length of m-cu2

- M1+2 and R4+5 veins gently convergent or parallel, their tips separated by more than half length of m-cu4

2. Antennal scape and pedicel reddish yellow; hind margin of male wing rather strongly concave near apex, where there is an apical black spot . S. scholtzi

- Antennal scape and pedicel brown-black; male wing not noticeably concave on hind margin, without apical black spot . 3

3. Mid tibia with long basal and median anterodorsal bristles in addition to general covering of short setulae . S. pallipes (pallidus phenotype)

- Mid tibia with only basal long anterodorsal bristle in addition to general covering of short setulae . S. pallipes (pallipes phenotype)

4. Antennal scape and pedicel clear yellow; hind femur broadly black at apex; CuA1 2 times longer than m-cu . S. tener

- Antenna entirely black . 5

5Male postpedicel 2.5 times as long as high; hypopygium black, yellow at apex;female stylus only slightly longer than postpedicel; mid tibia dorsally with only two bristles at base; hind femur broadly black at apex . S. bipartitus

Male postpedicel 3-3.5 times as long as high; hypopygium entirely pale;female stylus almost twice as long as postpedicel; mid tibia dorsally with four bristles, two at base and two at middle; hind femur with only a dark dorsal streak at apex . S. leucurus
 

 

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