ASAKCIXA. — ISCnYROSYRPHUS. 65 



iiKU'giii ; shoulders and hind corners dull yellowish with yellowish 

 pubescence ; scutelluni yellow, with line black pubescence ; pleurae 

 grey with white pubescence. Abdomen dull black ; 2nd segment 

 with a pair of large irregularly oval orange-yellow spots placed 

 obliquely from anterior corners, their inner ends occasionally 

 meeting, occupying a considerable part of the surface ; 3rd and 4th 

 each with a broad orange-yellow basal band, one-third to one-half 

 the length of the segment, extending from side to side but occasion- 

 ally not quite reaching the extreme side margins ; hind margin of 

 4th segment moderately shining black ; 5th segment more or less 

 black in middle, sometimes nearly wholly black, rather shining. 

 Pul)escence of abdomen pale yellow and conspicuous on yellow 

 spots on 2nd segment, short, black and inconspicuous on rest of 

 dorsum ; abdominal side margins (except where the spots on 

 2ud segment attain the margin) with a distinct fringe of coarser 

 black pubescence. Venter black with bast? broadly pale and two 

 (sometimes three) pale yellow bands corresponding to those on the 

 dorsum of the 3rd and 4th (and sometimes 5tli) segments. Lei/s : 

 coxie black; anterior femora and tibiae yellow; base of middle 

 femora blackish ; anterior tarsi mainly black, often brownish at 

 base ; hind legs wholly black. Winr/s clear ; a broad dark brown 

 band from front to hind margin occupying middle third of wing ; 

 extreme base brown ; haltenjs yellow . 



Leiu/tli, 11-12 mm. 



As widelv distributed as A. ericetoram in India and the East, 

 both from hills and |)laius, at almost all seasons of the year. 



Location of t>/pe uncertain. 



Geuus ISCHYROSYRPHUS, Birj. 



Ischi/rosi/rphus, Bigot, Ann. Sue. Eat. France, (6) ii, Rnll. ]>. Ixviii 



( \^&2). 

 Ischyrosyrphiis, Vorrall, Brit. Flies, Syrph. p. 321 (1901). 



Genotype, ^yrphas (jlaucius, L. ; by original desigiuition. 



Near Syrphiis. Eyes distinctly or indistinctly hairy ; jow Is not 

 more than one-third as deep as diameter of eye ; face without 

 median Ijlack stripe; abdomen in outline club- or |)liial-shaped, 

 sometimes broader, sometimes narrower; 2nd segment with a 

 broad, more or less (though always slightly) interrupted band, 

 generally transparent; 'A\\\ segment, and generally 4th also, with 

 a small widely interrupted band. 



These are the principal characters set out by I\Iik in erecting 

 his genus Lrtf/enosyrj)has, which is considered synonymous with 

 Ischj/rosyiphics by some authors. Bigot's diagnosis of the latter 

 genus was very faulty, and it seems questionable whether it is 

 advisable to give generic rank to every group of s|)ecies that ililfers 

 from tlie general facies of a very large genus such as >S>fr/)h>(s. 

 However, Verrall admits the present genus, and the only Indian 

 species referred to is Higot's. 



P 



