| Sphegina cultrigera | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Diptera |
| Family: | Syrphidae |
| Genus: | Sphegina |
| Subgenus: | Asiosphegina |
| Species: | S. cultrigera |
| Binomial name | |
| Sphegina cultrigera Hippa, Steenis & Mutin, 2015 [1] | |
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. [1]
The name is from Latin, cultrigera, bearing a knife, referring to the knife-like lobe on the male sternite IV. [1]
In male specimens, the body length is 5.3 millimeters. The wings are 4.5 millimeters long and hyaline with brownish stigma. The face is black and weakly concave with a weakly developed frontal prominence. The gena are shiny black; frons and vertex black and semi-shiny; lunula brownish; occiput dull black; antenna brown, basal flagellomere oval and baso-ventrally reddish, arista almost bare; thorax black; scutellum trapezoidal, shiny dorsally. The pro- and mesolegs are yellow, tarsomeres 4 and 5 black; metaleg with coxa brown, trochanter simple, yellow; metafemur yellow, the apical 1/6 and a broad annulus on the basal 1/2 brown; metatibia without apico-ventral tooth, yellow except the apical 1/4 black and brownish annulus on the basal 1/2 medially; metatarsus dark brown. The tergites are shiny black, tergite III with a yellow subanterior fascia, nearly 1/2 as wide as the length of tergite; sternite IV brown anteriorly and brownish posteriorly, the sword-like lobe on the left side pale yellowish; sternite VI black, with a very small tubercle at the posterior margin; sternites VII and VIII black. The surstyli are slightly asymmetrical, the cercus is enlarged, and the superior lobes are symmetrical. No female specimens are known. [1]
S. cultrigera is similar to S. siculifera , S. ensifera , and S. philippina . Unlike other Sphegina species, all bear a long sword-like lobe postero-laterally on the left side of male sternite IV. S. cultrigera differs from the other species by having a black gena, narrowly shiny frons above the lunula, and a metafemur 3.6 times longer than broad. S. philippina differs from the other species by having male genitalia with small cerci, strongly asymmetric surstyli, a metatibia produced into a spur apicoventrally, and a metafemur lacking a subapical paler annulus. [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) 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 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.
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 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 uncinata is a species of hoverfly in the family Syrphidae found in Myanmar. It's easily identified by a straight dorsal line of frontal prominence that ends just before the ocellar triangle, a strongly projecting mouth edge, and a vibrissal angle more strongly protruding than the frontal prominence.
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) adusta is a species of hoverfly in the family Syrphidae found in Myanmar. It's easily identified by its large size, left side surstylus with a number of unusual lobes, and general dark-brown coloration. It's similar to S. atricolor and S. furva, but unlike these species it lacks a transverse crest at the base of the lobe located sinistrolaterally at the posterior margin of male sternite IV.
Sphegina (Asiosphegina) atricolor is a species of hoverfly in the family Syrphidae found in Myanmar.
Sphegina (Asiosphegina) bidens is a species of hoverfly in the family Syrphidae found in Myanmar.
Sphegina (Asiosphegina) bilobata is a species of hoverfly in the family Syrphidae found in Myanmar. It's set apart from other species by its general pale yellowish color with three black longitudinal stripes on the scutum combined with the infuscated pattern at cross veins on the wing. The male sternite IV with its symmetrical pair of short spinose lobes posteriorly is quite distinct.
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 (Asiosphegina) cerina 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 culex 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.
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