THE DIPTERA-BRACHYCERA OF TASMANIA, 



Fig. 9. Wing of Tricophthalma novce-hollandice, 



Male. Face produced, dull orange, with usually a more or 

 less distinct black patch between tlie antennae, aud bearing 

 beneath the proboscis a beard of thick white or pale yellow 

 hairs. Front receding, grey, triangular in shape, with a 

 median ridge between the eyes. Proboscis black, about the 

 same length as the thorax. Palpi projecting forwards, oracge,. 

 the tip black with a pencil of black hairs. Antennae widely 

 separated, the three joints short, the first a little longer than 

 broad, the second broader than long, the third conical and 

 terminated in a three or four jointed arista, the first two 

 joints of which being short and thickened, the third long and 

 slender, and as long as the first two joints together, with a 

 very fine needle like termina'ion, which has the appearance of 

 being a separate joint ; first joint of antennae orange, second 

 and third joints and arista black. Vertex occupied by an 

 ocellar tubercle bearing long black hairs. Eyes densely 

 hairy, converging directly below the ocellar tubercle, where 

 they almost touch, after which they gradually diverge until 

 at the antennae they are widely separated. Thorax brown, 

 with traces of three short pale stripes in front, the whole 

 covered with dense brown pubescence. Abdomen differing 

 in colour and markings in almost every specimen ; it may be 

 almost entirely orange, but more usually the sides only are 

 orange, being separated by a middle, drab-coloured stripe; 

 the drab colour, however, may be so extensive that the orange 

 colour is reduced to lateral spots, whilst in other specimens 

 the whole dorsum is drab, the orange colour being altogether 

 wanting ; in all cases there is a median row of dark brown 

 diamond-shaped spots, which vary greatly in size ; the whole 

 is covered with dense drab or pale yellow pubescence. The 

 undersurface of both thorax and abdomen is co>ored with 

 white pubescence. Legs yellow, clothed with short, soft 

 yellow pubescence, but without any sign of bristles or spurs ; 

 tarsi darkened. Wings hyaline with the costal margin 

 broadly suffused with brown. 



Female resembles the male, but is alwa3's drab in colour ; 

 the eyes are distinctly, though not very widely, separated, 

 and the abdomen is produced into a long ovipositor. 



