DAS1POG0NINAE 



ROBBEK FLIES OF THE WORLD 



259 



a very little way beyond. The gonopod is robust 

 basally, distinctly separated, but shorter than the 

 epandrium ; it is attenuate distally. Hypandrium nar- 

 row but comparatively long; cavity small and open. 

 Female terminalia with 5 pairs of short, spikelike 

 spines laterally. 



Nicocles Jaennicke is a small but characteristic 

 Nearctic genus found in both eastern and western 

 United States and southern Canada. It is most abun- 

 dant in the northern Pacific states ; one species is found 

 as far south as Mississippi. The type of genus is found 

 in Mexico. 



Distribution : Nearctic : Nicocles dbdominalis Willis- 

 ton (1884); aemulator Loew (1872); argentatus Co- 

 quillett (1893) ; bromleyi~Ei. Hardy (1943) ; canadensis 

 Curran (1923) ; dives Loew (1866) ; engelhardti Wil- 

 cox (1946) ; lomae Cole (1916) ; pictus Loew (1866) ; 

 folitus Say (1823) [ = argentifer Loew (1866)]; pol- 

 linosae Wilcox (1946) ; punctipennis Melander (1923) ; 

 reinhardi Bromley (1934) ; rufus Williston (1884) ; 

 utahensis Banks (1920). 



Neotropical: Nicocles analis Jaennicke (1867). 



Genus Cleptomyia Carrera 



Figures 577, 1144, 1153 



Cleptomyia Carrera, Arq. Zool. Sao Paulo, vol. 7, p. 124, 1949. 

 Type of genus: Cleptomyia bacillifera Carrera, 1949, by 

 original designation. 



Small flies with the head constructed much as in 

 Aphamartania Schiner. Vertex but little excavated 

 but ocellarium prominent, wide, short, moderately 

 high, with vertical sides and large, anterior ocellus. A 

 few acrostical setae present and short dorsocentral setae 

 differentiated behind the humerus. Wings with all 

 posterior cells open and anal cell closed in the margin ; 

 fourth posterior cell greatly narrowed. The abdomen 

 is comparatively robust, moderately long, and not at 

 all tapered, the last segments perhaps slightly wider. 

 Six well developed tergites in the male with the seventh 

 very short. Male terminalia large and conspicuous, 

 fully rotate, the long epandrium fully cleft, and diver- 

 gent apically, accommodating the proctiger. Gonopod 

 unusually well developed, bulboconvex laterally with 

 hooked, apical process; hypandrium prominent. The 

 special characteristic of these flies lies in the presence of 

 a dense patch of more or less clavate, appressed hairs on 

 the sides of the last two tergites. Length 10 to 12 mm. 



Head, lateral aspect: The head is rather long with 

 the face reduced in height and moderately protuberant ; 

 it begins to extend immediately beneath the antenna 

 and is recessive just above the epistomal margin. The 

 epistoma is large and slightly oblique. There is no de- 

 velopment of the cheek below the eye. The eye is longer 

 on the lower half and distinctly shortened above. The 

 occiput in profile is scarcely evident, except on the lower 

 part of the head, where it slopes very gradually back- 

 ward from the eye margin and it is most prominent sub- 

 medially. The lower medial edge of the occiput behind 



the proboscis is sharp and rectangular. The occiput 

 bears coarse, scattered hairs on the ventral half, weak 

 bristly hairs on the upper half, with three somewhat 

 more stout elements behind the upper eye corners. 

 Proboscis small, strongly compressed and more so at 

 the apex. From dorsal aspect it is distinctly attenuate 

 from the base but from lateral aspect only near the apex, 

 although the base is quite narrowed and followed by a 

 swollen area. Ventrally this basal part bears only 2 

 small hairs and along the middle 1 pair of long, diver- 

 gent hairs and the apex has a few, fine, short hairs. 

 Palpus distinctly composed of two segments, cylindri- 

 cal with the second segment more or less clavate and 

 bearing several slender, black bristles. The apex has 

 a large pore. I am unable to determine whether the 

 basal segment is excavated ; most of it is free and there 

 is an attached portion, rather different, proximal in po- 

 sition, which bears 5 long, bristly hairs; it is broader, 

 partly free, and may represent the antepenultimate 

 segment. 



Antenna attached a little above the middle of the 

 head. The first segment is twice as long as wide and 

 bears 1 seta above, 2 below; the second segment is 

 slightly longer than the first and bears 2 moderately 

 long, slender, ventral bristles attached in the middle. 

 Third segment somewhat more stouter or wider than 

 the second segment, especially through the middle por- 

 tion ; at the apex it bears a short, stout microsegment, 

 slightly oblique with minute apical spine. 



Head, anterior aspect: The width of the head is 

 nearly twice the height and the head is perhaps a little 

 wider on the lower half than on the upper half. The 

 face is wide and approximately one-fourth the total 

 head width. It is distinctly widened below and there 

 are long, deep, ventral creases along each lower eye 

 margin. The eyes descend a considerable distance 

 below the epistoma. The face is finely pollinose with- 

 out pile and situated above the epistoma, at the point 

 of greatest extension, there is a transverse row of 6 

 short, stout, pale bristles. Below on each side there is 

 a group of 4 smaller, shorter, bristly hairs or weak 

 bristles. The front is barely wider than the upper face 

 and flat with in front of the ocellus a triangular area 

 marked by creases. Sides of front with 1 or 2 minute 

 hairs. The vertex is shallowly excavated, with sloping 

 sides and the quite large ocellarium of no great height 

 has vertical sides, very large anterior ocellus and bears 

 between the posterior ocelli one pair of short bristles 

 and a pair of smaller, bristly hairs. 



Thorax: The thorax is moderately high, the meso- 

 notum is only slightly convex over the middle portion 

 but strongly convex anteriorly in front of the scutellum. 

 It bears fine, appressed, scattered setae anteriorly, a 

 well separated row of 5 or 6 acrostical setae anteriorly 

 and a distinctive, dorsocentral row of short, regularly 

 spaced, pale, appressed, stout setae in each dorsocentral 

 row which do not become longer posteriorly in front 

 of the scutellum. The lateral bristles, however, are 

 stout and pale, rather short, although longer over the 

 wing and on the postalar callosity. The notopleuron 



