| Sphegina bidens | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Diptera |
| Family: | Syrphidae |
| Genus: | Sphegina |
| Species: | S. bidens |
| Binomial name | |
| Sphegina bidens Hippa, Steenis & Mutin, 2015 [1] | |
Sphegina (Asiosphegina) bidens is a species of hoverfly in the family Syrphidae found in Myanmar. [1]
The name comes from Latin 'bidens', meaning 'two-toothed', referring to the two-toothed postero-dorsal part of the male superior lobe. [1]
In male specimens, body length is 6.5 to 7.9 millimeters and wing length is 5.7 to 6.5 millimeters. The face is strongly concave with a moderately developed frontal prominence. The gena is shiny yellow; frons and vertex weakly shiny and dark brown; lunula brownish; occiput dull black; antenna entirely yellow; thorax dull black or mainly brown; scutellum trapezoid; pro- and mesoleg yellow, sometimes tarsomere five brownish; metaleg with coxa brownish, trochanter brownish, femur yellow with the apex and a ventrally interrupted annulus on the basal 1/2 brownish, tibia without apico-ventral tooth, brownish except the basal 1/4 and a broad annulus on the apical 1/2 yellow, tarsus dark brown. The wings are hyaline, stigma yellowish, transversal veins infuscated. The basal flagellomere is oval and the arista is pilose. [1]
S. (A.) bidens resembles S. (A.) forficata , S. (A.) crucivena , S. (A.) nasuta , and S. (A.) simplex , but is not closely similar to any of them and differs from all by the male genitalia, especially by having a bifid apex of the superior lobe and apically expanded aedeagal lobe. S. (A.) bidens is also similar to S. (A.) orientalis , but the latter differs by having dark (not pale) pro- and metatarsus, simple (not apically bifid) superior lobe, and by very narrow aedeagal lobe, similar to that of S. (A.) nasuta. [1]
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