AS.VllCIXA. 63 



Genus ASARCINA, Macq. 

 AsarTxina, Macquart, Dipt. Exot. ii, 2, p. 77 (1842). 

 Gen'OTYPe, Sijrphus rostratus, Wied. ; by original designation. 



Characters mainly as in tSi/rj^Jins. Abdomen rather broader, 

 flat. Frons rather abruptly projected into an obtuse antennal 

 prominence ; face a little excavated below antenna; ; facial bump 

 distinct, more prominent than iu Sf/rj^Jius ; mouth-border not 

 produced ; proboscis rather long, labella large. Winr/s with 

 submarginal cell widened at about the middle and again at tip. In 

 all else as in Syr^ihus. Macquart considers that this genus 

 a])proache3 Rliingia, and attributes it to Serville in maiuiscript. 

 The type-species rostratus is evidently more Rhvu/ia-Wke than the 

 two Orit^ntal ones, cecji-otus and ericetorum, in neither of wliich does 

 the face in any way approach that of Rhingia. 



Life-historj/ apparently unknown. 



Range. South Asia, China, Orient, North and Central Africa. 

 Of the two Indian species, ericeionun has pale yellow unmarked 

 wings, and cegrota a dark broad band across the middle of the wings. 



51. Asarcina ericetorum, Fair. (PI. I, fig. IS : PI. II, tig. l.) 



Si/rphus ericetorum, Fabricius, Spec. Ins. ii, p. 425 (1781). 



Asarcina ericetorum, Bnmetti, Kec. Ind. Mus. xi, p. 210 (1915). 



Si/rphns salrice, Fabricius, Mant. Ins. ii, p. :j40 ( 1787). 



Asarcina salvice, de Meijere, Tijd. v. J"]nt. Ii, p. .31 1 (1908). 



Syrphus incisuralis, Macquart, Dipt. Exot. Siippl. 5, p. 94 (1855). 



Asarcina typica, liezzi, Ann. Mus. Hung, vi, p. 499 (1908). 



? Didea diaphana, Doleschall, Nat. Tijd. Ned. Ind. xiv, p. 409 (1857J. 



c? ?. Ilead: eyes in 6 closely contiguous for half the dis- 

 tance from vertex to frons; facets uniform in size; vertical 

 triangle very elongate, black with black pubescence ; frons bright 

 sulphur-yellow with long black erect pubescence ; a semicircular 

 shining blackish-brown spot on upper side of the small antennal 

 prominence, the rest of which, with the antennae, is brownish- 

 orange ; 1st and 2nd joints of latter with black stiff hairs above 

 and below, upper side of 3rd joint brown ; arista orange, bare • 

 face and all lower part of head covered with pale yellow tomentum 

 and very fine concolorous pubescence ; central bump and mouth- 

 border brownish-orange; proboscis black; occiput dark, with 

 yellowish-grey tomentum on side margins and an unbroken fringe 

 of bright yi'llow liairs forming a complete circle round the whole 

 head. In $ , frons at vertex about one-ninth of the head, 

 rather rapidly widening to double that width at level of antenuc'©; 

 vertex for some distance brilliantly shining violet, with sparse, 

 almost imperceptible fine dark h;iirs ; face with parallel sides, as 

 wide as widest part of frons, with fine yellow pubescence. Thorax 

 jcneous with a slight brassy tinge, from fore to hiiul margin : 

 sides of dorsum and the scutellum wholly (irange-yellow ; pleuraj 

 yellowisli-grey. Whole; thorax and scutellum covered with 



