»» STUATIOMYID.r,. 



58. Microclirysa flaviventris, Wled. 



Sargus JJaviventris, Wiedemann, Anal. Ent. p. 31 (1824). 

 MicrocJirijsa flaviventris, Briinetli, Kec. Ind. Mus. i, p. 103 (1907). 

 Sargus affinis, Wiedemaun, loc. cit. ; Bruiietti, loo. cit. 

 Chrysomyia annnlipes, Thomson, Eugen. Resa, p. 461 (1869). 

 Microchrysa gemma, Bigot, Ann. Soc. Ent. France, (5) ix, p. 231 

 (1879) ; Brunetti, Eec. Ind. Mus. i, p. 103 (1907). 



c? $ . Htad in S , vertex black, shining, with a few black hairs ; 

 ocelli distinct, red; e3'^es contiguous for rather more than half the 

 distance from vertex to frontal triangle ; upper facets briglit 

 brown, much larger than the blackish lower ones ; frons blackish, 

 with a few short pale hairs ; face brilliantly shining metallic 

 green, bare ; proboscis and palpi rather bright yellow^ ; antennae 

 pale yellow, with 1st and 2nd joints subequal, iird I'ather longer 

 than 2nd, with pale yellow arista ; occiput black, very concave ; 

 no definite postocular orbit. In $ , frons forming one-third of 

 the head, rather broader at vertex, brilliantly shining metallic 

 blue-green, carried over the vertex to the blackish occiput and 

 bearing a little short grey pubescence ; remainder as in c? • 

 Thorax brilliantly shining metallic green, with very sparse pale 

 yellow pubescence on dorsum and parts of the pleurae ; scutellum 

 similai'ly coloured. Abdomen in c? brownish yellow, varying to a 

 little lighter or more reddish individually, with microscopic pale 

 yellow pubescence, 5th segment blackish ; venter yello\^■ish, often 

 more or less marked with black. In $ , brilliantly shining green, 

 with microscopic pale yellow pubescence ; venter generally 

 brownish, sometimes yellowish or even metallic green. Legs 

 pale yellow ; hind femora with broad median brown band and 

 hind tibia3 with broad apical band, both bands sometimes much 

 paler. Wings colourless ; veins and the rather large stigma pale 

 yellow ; halteres yellow. 



Length, 2^-4 mm. 



Described from a considerable number of both sexes in the 

 Pusa and Indian Museum collections and from other sources from 

 many parts of India, dated March and from June to October. 

 Also from Peradeniya, Ceylon, 15. vii. 1910 ; Java (Jacohson) ; 

 8ibu, Sai-awak, 2. vii. 1910 (Beebe). I have taken it myself in 

 Mussoorie and Darjihug. Common and widely distributed in 

 India and the East. Van der Wulp records it from Papua. 



M. affinis, Wied., from East India, and M. gemma, Big., from 

 Ceylon, are probably synonyms. 



59. Microchrysa calopa, Brim. 



Microchrysa calopa, Brunetti, Eec. Ind. Mus. vii, p. 453 (1912), 



$. Head with frons broad, bright metallic green on vertex, 

 changing insensibly to brilliant violet-blue just above autenna), 

 with veiy short pale yellow pubescence ; face metallic green ; oral 

 opening brown ; eyes dark brown, the upper corners rounded off, 



