344 PERCY SLADEN TRUST EXPEDITION 



Agromyzidae. 



Agromyza, Fallen. 



Agromyza Fallen, Dipt. Suec, Agromyz., iii, (1823), p. 



52. Agromyza pubicornis, n. sp. 



This species is one of the relatively longer and more parallel forms ; in shape it 

 resembles a small A. capitata. 



Head (PI. 16, fig. 19). Frons dull yellow with a black somewhat shining ocellar 

 spot; the lunula is sunk into the frons leaving somewhat projecting yellow eye-margins, 

 it extends from the base of the antennae nearly half way back to the ocellar spot and 

 is grey in colour, the upper rounded edge being somewhat silvery. Face, tongue, palpi, 

 jowls and margins behind eyes yellow; back of head black; the jowls project somewhat 

 and there are well marked vibrissae. 



Antennae; first two joints yellow, the third greyish but yellow inside near the base, 

 second joint with a fine bristle; arista somewhat thickened especially at the base which is 

 yellow the rest being darkened, the pubescence is well marked, stout and close set. 



Fig. 29. Agromyza pubicornis, n. sp., wing. 



Four fronto-orbital bristles, lower two fine and pointing inwards, upper two stouter and 

 pointing outwards; stout inner verticals nearly parallel, finer outer verticals; ocellars 

 parallel and forwardly directed; post- verticals divergent. 



Thorax. Dorsum and pleurae slightly shining black (1-1-3), rather unequal dorso- 

 central bristles ; achrostical bristles in four well marked rows. Scutellum black and 

 somewhat pointed with four long and nearly equal bristles, the terminal pair fairly close 

 together, the other pair near the base and somewhat remote from the margin. 



Wings as Fig. 29, glassy vi^ith brown veins. 



Halters bright yellow. 



Legs yellow with slightly infuscate tibiae and tarsi. 



Abdomen somewhat shining black with approximately equal segments, covered 

 dorsally with short bristles. 



Size. If mm. 



Localities. Seychelles. Mahe: marshy ground near sea-level at Cascade, 20. 11. 

 1909; marshes on coastal plain, Anse aux Pins and Anse Royale, I. 1909. 



