404 



UNITED STATES NATIONAL MUSEUM BULLETIN 224 



smaller than in Adelodus Hermann and they are con- 

 cealed only from the dorsal aspect. 



Distribution : Palaearctic : Lowinella virescens Loew 

 (1871). 



Ethiopian: Lowinella aphoea Seguy (1950). 



Genus Goneccalypsis Hermann 



Figures 282, 663, 1259, 1268, 1590, 1594, 2116, 2127 



Goneccaljipsis Hermann, Nova Acta Acad. Caes. Leop.-Carol., 

 vol. 96, p. 108, 1912. Type of genus: Atomosia argenteo- 

 viridis Hermann, 1907, by original designation. 



Minute, cylindrical, punctate flies with scanty, fine, 

 short pile and few bristles. Face narrow, with promi- 

 nent scales and with the vertex scarcely wider than the 

 face. The vertex is deeply excavated and bears quite 

 short bristles, except for 1 pair of long bristles on the 

 high, steep ocellarium. Third antennal segment with 

 a moderately large but attenuate microsegment. 

 Length 7 or 8 mm. 



Head, lateral aspect : The head is of moderate length 

 and very strongly convex anteriorly. The face is only 

 slightly visible below in profile. Occiput convex and 

 receding above and below; it is somewhat swollen and 

 therefore visible in profile throughout from near the 

 vertex to the bottom of the head ; it is micropubescent 

 and bears short, scattered pile below and beginning at 

 the middle a row of 9 very stout, rather short, black, 

 sharp, tuberculate, spinous bristles. Proboscis short and 

 cylindrical, directed nearly straight forward; the apex 

 is subtruncate and pilose. The antenna is slender ; first 

 segment quite slender, nearly twice as long as the sec- 

 ond ; both first and second segments with a few slender, 

 bristly hairs of several lengths. The third segment is 

 as long as the combined length of the first two segments 

 and while of nearly uniform thickness, as wide or less 

 wide than the second segment, it is slightly angulate at 

 its base, especially below, and in this respect, as well as 

 the character of the microsegment, resembles Atoni- 

 omyia Hermann. At the apex of this segment there 

 is a basally stout, only moderately attenuate, short 

 microsegment, with fine pubescence and minute, blunt, 

 apical spine but no basal spine as in the above mentioned 

 genus. 



Head, anterior aspect : The head is of only moderate 

 width. The face has no stout bristles. On the upper 

 half, some distance below the antenna are 2 long, 

 slender bristles or bristly hairs on each side placed 

 vertically and curved downward; 2 similar, long, 

 slender hairs arise from the sides of the lower pro- 

 tuberant part of the face followed by 3 others along 

 the subepistoma which are somewhat shorter. The 

 protuberance bears a wide, characteristic, medial patch 

 of broad scales compounded of massed hairs. Several 

 of them extend a considerable distance beyond the face. 

 The face is only slightly wider below and the front and 

 vertex also only a little widened. Ocular sides of front 

 with 3 weak bristles. Vertex deeply excavated and it 

 and the conical ocellar protuberance with steep sides; 



the latter bears a pair of long, quite stout, lateral, di- 

 vergent, black bristles and a slender, shorter pair; an- 

 terior ocellus enlarged. 



Thorax: The mesonotum is moderately convex, the 

 medial area bare and polished like glass, with acrostical 

 pile, but with rather abundant, appressed pile situated 

 on large triangles placed medial to the humerus and 

 occupying the anterior half of the space in front of the 

 transverse suture. Notopleural area with 1 long, stout, 

 black bristle; postalar area with 1 bristle; supraalar 

 area with 1 and the scutellar margin with a pair of 

 widely separated, unusually long, stout, black bristles. 

 Scutellum only very slightly convex, polished and bare 

 except for about 12 scattered hairs and a few others on 

 the margin. There is a deep, impressed, premarginal 

 crease. Pleuron micropubescent with a vertical, middle, 

 bare stripe and numerous, fine hairs on the upper meso- 

 pleuron and a single, very long, delicate hair from the 

 upper posterior corner of the mesopleuron. Hypo- 

 pleuron with a few, long hairs and long and short 

 pubescence. Metapleuron with a vertical row of about 

 8 divergent, fanlike hairs, extremely long, rather fine, 

 pale, and bristly. Slopes of the metanotum with a pe- 

 culiar patch of 11 moderately long, extremely stout, 

 tuberculate, spinous bristles. 



Legs : The middle femur has fine, long pile ventrally 

 and a weak, anterior bristle at the outer third, a longer, 

 stouter bristle anteriorly at the outer fifth. Middle 

 tibia witli 3 fine, weak, pale, posterior bristles and 

 growing longer towards the apex; also witli 3 long, 

 pale, ventral bristles, the basal and middle elements 

 exceptionally long and oblique, the apical bristles 

 shorter. This tibia likewise has anteriorly 4 longer, 

 stout, black, anterior bristles, the basal bristle short, 

 the last 2 elements longest. Middle basitarsus with 

 1 extremely long, pale, posteroventral bristle at the 

 base, and apically with 1 medium and 1 quite long, 

 stout, black, anterior bristle and 2 short, posterior 

 bristles. Anterior legs rather similar, the femur with- 

 out bristles but with long pile below; this tibia has 

 3 extremely long, posterior bristles, 3 weak, ventral, 

 and 3 weak dorsal bristles. Anterior basitarsus with 

 a single, extremely long, pale, posterior bristle at the 

 base. The apex has 2 moderately long, dorsal, black 

 bristles; one of these is lateral and the other is ex- 

 tremely long, stout and anterior. Second anterior tar- 

 sal segment with 2 moderately long, apical, dorsal 

 bristles and anteriorly and posteriorly with a single, 

 extremely long, stout, black bristle. Claws sharp; 

 pulvilli four-fifths the length of the claw; empodium 

 long and slender, bristlelike. 



"Wings: The marginal cell closed with a quite short 

 stalk. Fourth posterior cell closed with a moderate 

 stalk and the anal cell closed in the margin. The alula 

 is linear and narrow and the ambient vein ends just 

 beyond the anal cell. The veins closing the discal and 

 fourth posterior cells form almost a straight line in 

 one wing, and are slightly offset in the second wing. 



Abdomen: The abdomen is rather like Atomosia 

 Macquart but more slender and strongly punctulate, 



