Sphecomyia tsherepanovi (Violovitsh, 1974), stat. rev. et

M. Moran, Kevin & H. Skevington, Jeffrey, 2019, Revision of world Sphecomyia Latreille (Diptera, Syrphidae), ZooKeys 836, pp. 15-79 : 43-45

Sphecomyia tsherepanovi (Violovitsh, 1974), stat. rev. et comb. n. Figs 2L, 10D, 12D, 13B, 14C, 24

Criorrhina tsherepanovi Violovitsh 1974:127. Type locality. Russia: Kuril Islands, Island Sikotan. [ZISP]

Criorhina tsherepanovi Violovitsh 1976:341 - 1982: 211, 1983: 137; Peck 1988:207

Criorrhina aino Mutin and Barkalov 1990:118, not Stackelberg 1955. Misidentification

Criorhina aino of authors, not Stackelberg 1955 - Mutin and Barkalov 1997: 217; Ohishi et al. 2004: 27; Mutin 2016: 17. Misidentification.

Diagnosis.

Species similar to S. aino or S. pseudosphecomima but can be distinguished by the following characters: cell c bare on basal two-thirds; ocellar triangle black pilose; silver-white pruinose; basiphallus as in Fig. 2L.

Redescription.

Male. Body length: 10.9-14.2 mm. Wing length: 8.4-9.0 mm. Head. Face silver-white pruinose with shiny, black, medial vitta extending from oral margin to base of antenna; frons broad, about as long as broad at antenna, two-thirds as broad at vertex as at antenna, bare, with silver-white pruinosity along posterior rim; vertex triangular, longer than broad, shiny, with ocellar triangle entirely, or at least mostly, black pilose; postocular border silver-white pruinose; postocular pile black; occipital pile pale; male narrowly dichoptic; antenna black, mostly black pilose, with length of segments roughly in a 3:3:2 ratio.

Thorax. Sub-shiny black; postpronotum pale pilose; scutum pale pilose, except with black pile posteromedially; scutellum, postalar callus, proepimeron, posterior anepisternum pale pilose; posterior katepisternum pale pilose with broadly separated patches; anterior anepimeron pale pilose; metasternum pale pilose; postpronotum, anterior eighth of scutellum, broad posterior margin of anepisternum and dorso-posterior corner of katepisternum silver-white pruinose; area between postpronota weakly silver-white pruinose, except shiny medially; anepimeron shiny; scutum without pruinose vittae; ventral calypter with long pale pile.

Legs. Foreleg black, except reddish-yellow at apex of femur; fore tarsi slightly broadened; midleg yellow, except basal four-fifths of femur and last two tarsomeres black; hind leg reddish-yellow, except last two tarsomeres black; legs pale pilose, except black pilose on fore tibia, fore tarsi, extreme apex of fore femur and last two mid and hind tarsomeres; hind coxa silver-white pruinose.

Wing. Hyaline; microtrichia absent from following areas: cell bc; basal two-thirds of cell c; basal fourth of cell sc; cell r1 from base almost to crossvein r-m; broad basal portion of cell br (before origin of M) and about basal two-fifths of narrower portion of this cell (caudad of spurious vein only); cell bm, except apex and narrow anterior and posterior margins of about apical fourth; broad anterior margin of cell cua; narrow, elongate, oval area proximal to vein A1.

Abdomen. Tergites and sternites shiny to sub-shiny, black with silver-white pruinosity as follows: tergite 1 pruinose posteriorly; tergite 2 with thin, interrupted, medial band which curves posteriorly to reach the posterolateral corners; tergite 3 with thin, interrupted, medial band which does not curve anteriorly; tergite 4 with similar but thinner band; sternite 1 weakly pruinose; sternites 2 and 3 pruinose on anterior third and sub-shiny on remainder; sternite 4 with anteromedial pruinose spots; pile of abdomen pale.

Male genitalia. Surstylus not elongated, about as long as broad, curving upward ventrally; pile on anterolateral outer surface of surstylus; minute spines on ventral surface and apical half of interior lateral surface; basal fourth of the ventral surface of the surstylus produced into a lobe directed anteriorly, with minute pubescence on ventral and lateral inner surface; cerci rounded, with no invagination on posterior border; aedeagus as in Fig. 2L.

Female.

Similar to male except normal sexual dimorphism.

Distribution.

Japan: Hokkaido, Honshu. Russia: Kuril Islands (Fig. 24).

Biology.

Collected visiting flowers of Philadelphus satsumi Siebold ex Lindl. and J. Paxton. Recorded flying early June through mid-July.

Remarks.

See S. aino .