THE DIPTEROUS GET^fUS DOLICHOPUS IN NORTH AMERICA. 229 

 No. 166. DOLICHOPUS MISELLUS Melander. 



Dichopus misellus Melander, Canadian Entomologist, vol. 32, p. 136, fig. 11. 



Male. — Length 4.5 mm.; of wing 3.5 mm. Face of moderate 

 width, yellow; front purple, or perhaps blackish with reddish reflec- 

 tions. First antennal joint not unusually long, yellow below, black 

 on upper half, second and third joint black (the second may be a 

 little yellow below, but I can not be sure) ; third joint a little longer 

 than wide. Lower orbital cilia yellowish w^hite. 



Thorax and abdomen green, the latter with coppery reflections. 

 Hypopygium black; its lamellae (fi.g. 166) of moderate size, some- 

 what oval, or perhaps more subquadrate in outline, yellowish white, 

 with narrow black border at apex, which is jagged and bristly. 



Fore coxae yellow with black or greenish stripe on the posterior 

 edge of outer side, anterior surface apparently nearly bare, with five or 

 six black hairs at upper inner corner, hind femora with one preapical 

 bristle. Hind tibiae very slightly darkened at tip. Fore tarsi a 

 little longer than their tibiae, black from the tip of the first joint, 

 which is a little longer than the two following joints taken together, 

 but not as long as the three following joints together; third and fifth 

 joints of about equal length, fourth a little shorter. • Calypters and 

 halteres yellow, the former with long black cilia, which are not very 

 numerous in the type. 



Wings without what could be called an enlargement of the costa, 

 but the costa with a very slight cylindrical thickening, which begins 

 before the tip of the first vein and ends abruptly a short distance 

 beyond the tip of that vein, this thickening is small and would not 

 be so plainly seen if it were not blackish at tip and the costa more 

 yellowish just beyond it. 



Redescribed from the single type specimen in the American Museum 

 in New York City. 



This type specimen is in very poor condition (apparently always 

 was), so it is difficult to decide with certainty whether this is ciliatus 

 Aldrich or not, so I am letting the species stand for the present, and 

 will add to my description of the type specimen that I saw the fol- 

 lowing points taken from original description: 



Antennae lengthened, the joints subequal in length, first joint 

 reddish below. Vertex violaceous with a cupreous tinge. Anterior 

 face of front coxae dark yellow, sharply limited, without the usual 

 coating of black hairs, but with a few pale ones. Hind tibiae with an 

 elongate apical "dimple" and a narrow glabrous streak on the 

 posterior face. Wings with the fourth vein obtusely but sharply 

 bent, cross-vein distant less than -twice its length from the tip of 

 fifth vein. 



