368 PROCEEDINGS OF THE NATIONAL MUSEUM vol. loe 



to structure of genitalia; genitalia missing; stigmata free in interseg- 

 mental membrane of segments II-IV. 



Remarks: Tlie type female specimen bears the following labels: A 

 white one with "Pialea Er.," a blue-green one with "lomata Er.," a 

 blue-green one with "San Joao del Rey, Sellow," an orange one with 

 ''Type," and a small white one with the number "1247," The type 

 is in the Deutsches Entomologisches Institut, Berlin, Germany, and 

 is in very good condition except for missing right front leg, tarsi of 

 leg II and III, apical portion of left wing, and genitalia. 



The type locality "San Joao del Rey" has been located on different 

 maps, and was also found to be spelled as "San Joao d'El-Rey" and 

 "Sao Joao del Rei." It is a locality about 2.50 km. northwest of Rio 

 de Janeiro in the State of .Minas Gerais, Brazil. Two of the tliree 

 other Brazilian Piolea species have been collected in the same vicinity, 

 i.e., near Rio de Janeiro and near Sao Paulo, thus representing an 

 isolated Brazilian distribution at present, as the other species, 

 lutescens, is recorded only from "Brazil." The new species ecuador- 

 ensis, from Ecuador, hints at a much larger distribution. 



Erichson (1840) gave an excellent color figure of the whole speci- 

 men of lomata, but his figure of the head (fig. (9)p) gave an erro- 

 neous impression of the antennal insertion by implying a ventral 

 insertion. Bezzi (1912) examined a specimen of Pialea from Sao 

 Paulo and, although he gave no figures, he said the antennae were 

 bare, implanted on a special tubercle which was placed nearer the 

 vertex than the mouth. This indicates he had a male and very 

 probably it was lomata. 



This species may be more closely related to ecuaclorensis than to 

 capitella, judging from the similarity of tlie basal cells and general 

 cell structure, particularly in the shape of the first posterior cell. 

 However, it has five posterior cells as in capitella. 



Pialea capitella, new species 



Figures l,a-rf; S,i; 4,(i 



Male: Length of entire specimen 11.25 mm.; wing length 8.40 mm. 



Color: Black, brown, and yellow. Head, except antennal seg- 

 ments II and HI, black; antennal segments II, III exce])t upper inner 

 basal third, thorax except sternopleura and meropleura, legs except 

 knees, pulvilli and basal third of tarsal claw, squaniii, wing veins, 

 sternites I-VII except along narrow apical margins, tergites I-III, 

 and tergites IV-VI in broad median quadrangular area (fig, l,d) 

 dark brown; upper inner basal tliird of antennal segment III, pulvilli, 

 basal third of tarsal claws, lateral margins of tergites IV-VI, and wing 

 membrane brownish A'ellow. 



