PIALEA. 161 



closing discal cell (or it may be regarded as a discal cross-vein) ; 

 in auripila, if such veinlet is a discal cross-vein, the 4th vein's 

 lower branch is not forked, joining upper branch of 5th a little 

 before margin of wing. Posterior cross-vein short; 5th vein 

 forked, lower branch closing anal cell ; axillary vein present (at 

 least in auripila). Three submarginal cells ; three or four posterior 

 cells (first and last closed).* 



Range. The only other known species (P. lomata) is from 

 Brazil. " . 



Life-history unknown. 



124. Pialea auripila, Brun. (PL II, figs. 24, 25.) 



Pialea auripila, Brunetti, Rec. lud. Mus. vii, p. 472 (1912). 

 cJ . Head about half the full height of the thorax ; eyes closely 

 touching from the extremely small vertex to the base of the 

 antennae, rather densely covered with long brownish-yellow hair; 

 vertical triangle with three ocelli, slightly elevated; occiput much 

 flattened, with brownish-yellow hairs ; proboscis very short, sub- 

 conical, blackish, with some yellow hairs at tip; palpi not obvious ; 

 frontal triangle black, very small, projecting over basal joints of 

 antennae, which are short, a little broader at tip, blackish, with 

 black bristles; the third joint of the shape of an elongated leaf, 

 flattened, with obtuse tips, three times as long as the two basal 

 joints together, yellowish, with dark brown lower margins. 

 Tliorax higli, robust, nearly quadrate; ground-colour dark shining 

 brown, closely covered with rather long thick bright golden-yellow 

 hair. Scutellum and metanotum concolorous in ground-colour and 

 hair with the dorsum ; sides of thorax dull yellowish, with long 

 thick golden-yellow hair; a little brownish hair is intermixed here 

 and there with the yellow hair of the thorax. Abdomen robust, 

 thickened, longer than thorax, oblongo-conical, tip pointed. 

 Brownish yellow; 1st segment, very short; the dorsum of each 

 segment, mainly occupied by a large semi-circular dark brown 

 spot at base, and extending in the middle of the segment to the 

 hind margin, leaving the sides of the segments mainly yellow; 

 5th and 6th segments all black, the latter very small. Venter 

 blackish brown, practically bare, emargination of segments 

 narrowly yellow. The whole upper side of the abdomen with 

 bright golden-yellow hair, which is brownish towards the tip. 

 Legs with coxae half as long as femora, yellowish, with pale yellow 

 hairs. Tibiae (which are a little longer than the femora) and tarsi 

 black, with blackish-brown hairs ; underside of tibiae brownish 

 yellow, and ernargi nations of the tarsal joints below narrowly 

 yellowish ; tibiae a little broadened at tips, where they end in a 

 small blunt tooth-like projection on the outer side. Tarsi a little 

 longer than tibiae, base of metatarsus (which is equal in length to 



* My reading of the venation in my description of P. auripila was slightly 

 faulty, the present interpretation being more probably correct. 



If 



