| Sphegina bracon | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Diptera |
| Family: | Syrphidae |
| Genus: | Sphegina |
| Species: | S. bracon |
| Binomial name | |
| Sphegina bracon Hippa, Steenis & Mutin, 2018 [1] | |
Sphegina bracon is a species of hoverfly in the family Syrphidae found in Vietnam along with specimens of S. (A.) lucida , S. (A.) nigrotarsata , S. (A.) spenceri , S. (A.) verrucosa , and S. (A.) vietnamensis . [1]
The names ‘bracon’ refers to the species of wasp the fly resembles. [1]
In male specimens, body length is 5.9 to 7.4 millimeters and wing length is 4.2 to 5.0 millimeters. The face is black, ventral half brown-yellow; concave with weakly developed frontal prominence and long pilose along the eye-margin. The gena and mouth edge are yellow with a large subtriangular non-pollinose shiny area; frons and vertex black with a semi-circular area posterior of the lunula non-pollinose and shiny; occiput black with light yellow pilose; antenna yellow to brown-yellow with black setae dorsally on scape and pedicel; thorax dark brown to black; scutellum black, semicircular, entirely shiny; pro- and mesoleg yellow, tarsomeres 4–5 black; metaleg with coxa black, trochanter yellow, femur and tibia black and yellow biannulate, tarsus black with tarsomeres 2 and 3 sometimes dark brown. The metafemur is slightly thick and the metatibia has short and weak apicoventral dens with a thin and narrow basal tarsomere. The basal flagellomere is oval and the arista is pilose, about three times as long as basal flagellomere. Female specimens were found that most likely belong to either S. (A.) bracon or to S. (A.) vietnamensis , but are impossible to identify for certain as the males of these species are only separable by the characters of the genitalia. [1]
S. (A.) bracon is similar to both S. (A.) furcillata and S. (A.) vietnamensis . The only reliable way to differentiate is by the differences in the male genitalia. In S. (A.) furcillata , the pile dorsally of the wing base is black (in S. (A.) bracon and S. (A.) vietnamensis it's at least partly yellow or dark brown) and the metafemur is slightly less thick than in S. (A.) vietnamensis. S. (A.) bracon is similar in appearance to S. (A.) spenceri , but the two are easily told apart upon closer examination. The females of S. (A.) spenceri differ from the supposed females of S. (A.) bracon and S. (A.) vietnamensis by the wider vertex with a medially shiny ridge and a lateral pollinosity of the ridge that's more velvet textured than the other pollinosity. [1]
Sphegina abbreviata is a species of hoverfly in the family Syrphidae found in Nepal. Like other species in its genus, S. abbreviata is small, slender, and usually found in and around woodlands. It's similar to S. angustata, though it's differentiated by having both dorsal and ventral sublobes posteriorly on male superior lobe instead of just a dorsal one, and by having the dorsal sublobes be apically short and truncate instead of long and pointed.
Sphegina angustata is a species of hoverfly in the family Syrphidae found in Nepal. It's similar to S. abbreviata, though it's differentiated by having only a dorsal sublobe posteriorly on the male superior lobe instead of both dorsal and ventral, and by having the dorsal sublobe be long and pointed instead of apically short and truncate.
Sphegina (Asiosphegina) amplistylus is a species of hoverfly in the family Syrphidae found in the Philippines. It's similar to S. inflata, S. philippina, and S. spathigera.
Sphegina (Asiosphegina) atrimanus is a species of hoverfly in the family Syrphidae found in Vietnam.
Sphegina (Asiosphegina) bifida is a species of hoverfly in the family Syrphidae found in Malaysia. It's similar to S. (A.) inventum, though it's differentiated by having the male superior lobe on both sides longer than wide instead of wider than long.
Sphegina (Asiosphegina) brevipilus is a species of hoverfly in the family Syrphidae found in China. It's similar to both S. (A.) plautus and S. (A.) simplex; it and S. (A.) plautus are the only known species with a sclerite between the bases of surstyli as well as posteriorly from the cerci.
Sphegina clavigera is a species of hoverfly in the family Syrphidae found in Vietnam. It's similar to S. crassispina and S. hauseri.
Sphegina collicola is a species of hoverfly found in Malaysia.
Sphegina crinita is a species of hoverfly in the family Syrphidae found in Malaysia and Indonesia. It's easily identified by its superior lobes, the left side one being pushed over the medial line of the hypandrium to the right side so that the right side one seems bilobed. Otherwise, the genitalia are nearly identical to those in S. fimbriata.
Sphegina dentata is a species of hoverfly in the family Syrphidae found in Taiwan.
Sphegina (Asiosphegina) achaeta is a species of hoverfly in the family Syrphidae found in Myanmar. It's easily identified by the weak setae on abdominal tergite I. It's similar in appearance to S. adusta but easily differentiated upon closer examination. The male genitalia are similar to S. pollex and S. culex, though it can be distinguished by having an acute posterodorsal corner of the superior lobe and a broader surstylus; it differs further from S. pollex by lacking a sub-basal dorsal thumb-like lobe. The arrangement of bristles on tergite I is similar to S. japonica.
Sphegina (Asiosphegina) albolobata is a species of hoverfly in the genus Sphegina found in Vietnam. It's similar to S. (A.) licina, but differs by having the ventral lobe of both gonostyli narrower, apicodorsal part of the right superior lobe shorter, and the ventral part of the left superior lobe with more prominent anterior, medial, and posterior lobes.
Sphegina (Asiosphegina) carinata is a species of hoverfly in the family Syrphidae found in Kambaiti Pass, Myanmar, a montane forest with swampy areas and streams located 2000 meters above sea level.
Sphegina crassispina is a species of hoverfly in the family Syrphidae found in Kambaiti Pass, Myanmar, a montane forest with swampy areas and streams located 2000 meters above sea level. A specimen was found in China that fits the description of S. crassispina save for the more extensively shiny frons and the slightly more protruding frontal prominence.
Sphegina crucivena is a species of hoverfly in the family Syrphidae found in Kambaiti Pass, Myanmar, a montane forest with swampy areas and streams located 2000 meters above sea level.
Sphegina cultrigera is a species of hoverfly in the family Syrphidae found in Kambaiti Pass, Myanmar, a montane forest with swampy areas and streams located 2000 meters above sea level.
Sphegina apicalis is a species of hoverfly in the family Syrphidae found in Taiwan.
Sphegina (Asiosphegina) bispinosa is a species of hoverfly in the family Syrphidae found in India, Nepal, and Bhutan. It's similar to S. (A.) hansoni, but easily differentiated by the strongly asymmetrical surstyli.
Sphegina guptai is a species of hoverfly in the family Syrphidae found in India. It's similar to S. elegans in general appearance and characters of the male genitalia. It differs from known Oriental species of Sphegina by the shiny black abdomen with widened terga III and IV. Only S. quadrisetae has a somewhat similar appearance.
Sphegina quadrisetae is a species of hoverfly in the family Syrphidae found in China. It's characterized by the long black pile posterior of the posteromedial corner of the eye, the scutellum with four long black setae at posterior margin, and the black and extremely strongly antero-ventrally projected face.
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