Spilomyia. 



551 



dissolved into spots below, and some more or less confluent spots 

 down between this stripe and the front margin. Antennæ yellowish 

 red, third joint generally somewhat darkened above; arista yellow. 

 Thorax black, dull, the humeri and postalar calli and a small, some- 

 times indistinct spot on the præalar calli yellow, further a yellow 

 spot on each side inwards to the humeri, a lateral stripe on the hind 

 part beginning at the transverse furrow and here curved a little in- 

 wards, and stretching back to the postalar callus, and fmally an angle- 

 shaped or somewhat angularly bow-shaped spot in front of scutellum ; 

 there are moreover two faint, grey pruinose, distant middle stripes in 

 front, reaching to the transverse furrow, the inner part of which latter 

 is likewise greyish pruinose. Scutellum black with the margin yellow. 

 Thorax has somewhat short, erect, black hairs, but pale on the yellow 

 spots and just at the front and hind margins; above the wing-root 

 the hairs are very dense; scutellum with longer, all whitish hairs. 

 Pleura with a yellow spot above the front coxæ, an elongated spot 

 down the mesopleura, a spot above on sternopleura, one on ptero- 

 pleura and fmally the metapleura yellow; the small protuberance in 

 front of the squamulæ is yellow; the hairs on pleura pale. Abdomen 

 dull black with six yellow bands, as second, third and fourth segments 

 have each a band at the front third and the hind margin yellow; 

 the bands on the hind margins are broader than those on the disc, 

 the apical band the broadest and tri- 

 angularly incised in the middle; the 

 bands on the disc are generally nar- 

 rowly interrupted in the middle and 

 they are widened at the sides so that 

 the side margin is yellow, Abdomen 

 is clothed with short hairs, which are 

 mainly yellow but with rather many 

 black intermingled on the black parts, 

 especially towards the middle, and on 

 the hind margins of the segments; on 

 the last segment the black hairs are 

 predominent on the hinder half, and 

 sometimes also on the hind margins 

 of second and third segments; at the 

 side margin the hairs are yellow and 

 a little longer and longest at the basal corners; the first segment has 

 longish, whitish hairs. Genitalia yellow with yellow and black hairs. 

 Venter black, shining, with the hind margins of the segments and the 

 side membrane yellow, and with longish, pale hairs, short on the 



Fig. 183. S. saltuum <J, hind leg. 

 X 8. 



