596 



UNITED STATES NATIONAL MUSEUM BULLETIN 224 



PART 2 



The following is Peris' description i:i translation: 



Head : The head has the facial iiromlnence not well developed ; 

 the face uniformly gray pruinose ; upper occipital bristles stout 

 and erect, not curved ; third antennal segment of a quite regular 

 or average oval form. 



Thorax : The mesonotum uniformly covered with short bris- 

 tles ; dorsocentral bristles not extending beyond the transverse 

 suture. Prominence of the metanotum bristly. Scutellum with 

 six or more marginal bristles. 



Abdomen : Somewhat flattened and black with whitish gray 

 pruinose spots upon the postero-lateral border of the tergites. 

 Tergites with distinct lateral discal bristles. All the segments 

 with the same coloration and pile until one reaches those which 

 form the genitalia. 



Wings: Rather strongly smoky and with the fifth vein always 

 ending posterior to the apex of the wing. Male with superior 

 forceps simple, without teeth or openings {ni escotaduras). Fe- 

 male with the ovipositor not compressed, and the segments short 

 and free, almost conical and bristly with minute spiny setae. 

 Coloration generally obscure and reddish black. 



The author has tentatively noted a species of this 

 genus among unidentified material from South Africa. 



Distribution : Palaearctic : Templasilus iolivari Arias 

 (1912). 



Genus Seabramyia Carrera 



Seabramyia Carrera, Arq. Zool. Sao Paulo, vol. 11, p. 147, 1958. 

 Type of genus : Seabramyia tijucana Carrera, 1958, by 

 original designation. 



The following is Carrera's description in translation : 



Head : The head is as in HoJcocephala in its general conforma- 

 tion, but the front without pile, a little more extensive ; the space 

 between the ocellar callosity and the base of the antennae must 

 be a little more extensive; ocellar callosity with a pair of 

 bristles ; face plain and without a transverse furrow or sulcus 

 above the oral border. Mystax with many bristles but they do 

 not extend beyond the lower third of the face. Proboscis and 

 palpus similar to Solcocephala but the palpus seems to be barely 

 shorter. Antennae with the two first segments of the same 

 extent and with small bristles. The third segment not twice as 

 long as the extent of the two basal segments united but it is 

 wider in the apical half ; at the apex dorsally, it has a few tiny 

 hairs; style formed by two articulations or segments and with 

 shining terminal spines. 



Thorax : Prosternum isolated from the pronotum and formed 

 by the two sclerites between the anterior coxae. Mesonotum 

 rather convex, with lateral bristles and dorsal centrals highly 

 developed, principally behind the suture. Scutellum smooth 

 above and with marginal bristles; pleuron with pile which is 

 more abundant on the mesopleuron where one finds posterior 

 bristles developed. 



Legs : Femora not swollen and the posterior tibia thicker or 

 wider in the apical half. 



Wings : Narrow and long, the anal cell furnished with a long 

 iwtiole. 



Abdomen : With seven segments before the genitalia. In the 

 male segments 4, 5, and 6 are a little wider (largos). In females 

 the sides of the segments are parallel and segments 6 and 7 

 narrowing and somewhat attenuate, after which is the ovi- 

 positor, which is quite short. Terminalia of the male small, the 

 aedeagus being very short, differing from what one finds in the 

 species of HoJcocephala where this organ with its part has the 

 shape or form of a lyre. 



Distribution : Neotropical : Seabramyia tijucana Car- 

 rera (1958). 



Genus Alvarenga Carrera 



Alvarenga Carrera, Arq. Zool. Sao Paulo, vol. 11, p. 159, 1958. 

 Type of genus : Alvarenga icariiis Carrera, 1958, by original 

 designation. 



The following is Carrera's description in translation : 



Head : Head as wide as the width of the thorax and densely 

 covered with hairy pile ; eyes bare (»»s) ; surface of face slightly 

 convex or rounded on all of its extent (levemente bojuda) and 

 covered with long pile uniformly from the base of the antenna 

 to the oral border and therefore not having a differentiated 

 mystax. Front of the same width as the face, somewhat or 

 scarcely narrowed at the base of the antennae, and as wide as 

 % of the maximum width of an eye. Ocellar callosity with 

 abundant long pile and some bristles. Occiput clothed with 

 pile, hairy and thick ; proboscis short, conical, with the apex 

 slightly curved downward ; palpus with bristles, the second 

 segment fusiform and with apical extremities prolonged into a 

 short neck (gargalo). Antennae apparently with five segments, 

 the last of which bears a minute dorsoapical spine, the two last 

 segments forming a style, united, as long as half the extent of 

 the third segment ; the latter is twice as big as the first segment 

 whose extent equals % the size of the second segment. 



The first division of the style (the fourth of the antenna) is 

 small and triangular in form; the following segment is large 

 and wide and of laterally compressed form and concave on its 

 external base. 



Thorax : The thorax with the pronotum rather well developed 

 and pilose; presternum formed by two small sclerites; mesono- 

 tum rather convex and covered with pile; more or less of this 

 hair extends to the upper part of the mesopleuron ; bristles little 

 differentiated from the pile of the mesonotum, except as pre- 

 suturals which are very shiny (miiUo nitidas). Scutellum with 

 fine, numerous bristles ; post-scutellar region without hair on the 

 lateral callosity. Metapleuron with a tuft of fine long pile. 



Legs : Of normal size and thickness and abundant pile ; the 

 bristles are well developed ; apex of anterior tibia with a rather 

 large curving spine; pulvilli and empodium will developed. 



Wings: Rather narrow with five posterior cells; fourth pos- 

 terior cell open ; anal cell open or closed in the margin of the 

 wings. 



Abdomen : Inclined downward and resembling in a certain way 

 the species of Cyrtidae of the genus Philopota. Male with seven 

 segments visible {visiveis) before the genitalia, and the seventh 

 (enihora o setimo seja hastante pcqucno) rather small. Abdo- 

 men of the female with eight segments, eighth (sendo o 8° has- 

 tante encoberto peJo 7°) ; pilosity scarce (escassa), in the fe- 

 male, whose genitalia are more or less concealed beneath the 

 eighth segment and so it is observed with difliculty to have a 

 circlet of spines characteristic of the species of Saropogonini. 

 Genitalia of the male small, the eighth tergite scarcely apparent, 

 with a moon-shaped crescent under the body of the seventh ; 

 ninth tergite formed by a single unit (peca) but with a deep 

 recess or cavity in the posterior margin, in such a way as to 

 present two lateral prolongations which become more slender at 

 the apex as though they were two spines, yet covered at the apex 

 by dense pilosity ; eighth sternite small, aedeagus of a tubular 

 form, expanding at the extremity. 



Distribution : Neotropical : 

 rera (1958). 



Genus Stenasilus Carrera 



StcnasiJus Carrera, Arq. Zool. Sao Paulo, vol. 11, p. 167, 1958. 

 Type of genus: Asilus tenuis Wiedemann, 1828, by original 

 designation. 



The following is Carrera's description in translation : 



Head : Wider than thorax ; face very narrow, slightly wider 

 below, flat or plain, and with fine bristles, not longer in extent 



Alvarenga icarius Car- 



