MORGAN HEBARD 1 57 



Stouter form, slight differences in the costal veins of the wings-" 

 and differently shaped genital hook in the male.-^^ 



Type. — cf ; Brownsville, Cameron County, Texas. July 31, 

 iyi2. (M. Hebard.) [Hebard Collection Type Xo. 410.] 



Description of Type. — Sizt- medium, form stout for the group. Head projecting 

 slightly beyond pronotum, interocular space subequal to that between antennal 

 sockets, ocellar areas very small and weakly defined, ocellar spots feebly indicated. 

 Antennae covered with minute hairs, particularly in proximal half, which is slightly 

 enlarged (but by no means plumose as in certain species of the genus). Ma.xillary 

 palpi moderately stout; third joint elongate, fourth distinctly shorter and expand- 

 ing e\enly distad, fifth (distal) distinctly longer than third, enlarged, with oblique 

 truncation reaching four-fifths of distance to base. Pronotum subcircular; evenly 

 convex to lateral margins, which have a very briefly reflexed border (this visible 

 only under a microscope) ; cephalic margin transverse, straight; cephalic and latero- 

 caudal angles broadly rounded; lateral margins very weakly comex; caudal mar- 

 gin moderately produced and obtuse angulate mesad. with angle broadK' rounded. 

 Tegmina with numerous longitudinal discoidal sectors (normally seven or eight). 

 Wings with proximal half of costal veins evenly and weakly thickened distad, 

 buffy. with veins distinctly bufty, this whole area resultantly not transparent. 

 Abdomen with second and third dorsal segments each supplied mesad with twin 

 groups of long hairs directed caudad, many of these adhering at their distal extremi- 

 ties; fourth and fifth unmodified; sixth wholly concealed excepting lateral portions, 

 which are very strongly produced distad with apices evenly rounded, extending as 

 far caudad as mesal portion of caudal margin of seventh segment, concealed portion 

 of sixth segment convex above concavity of seventh segment; se\'enth segment 

 concave mesad. with a small median projection proximad, Irom which sjiring two 

 small, adjacent, closely adhering, slender projections of hairs curving outward dis- 

 tad, the segment with a distinct medio-longitudinal sulcus from this point to the 

 caudal margin, which is broadly and weakly emarginate mesad, laterad the seg- 

 ment is weakly produced with margin rounded; eighth segment transversely nar- 

 rower, deplanate, caudal margin weakly concave, with a small nick opposite each 

 cereal base. Supra-anal [(late triangularh' i)roduced, with broad apex rounded. 

 Cerci elongate tapering, with (normally eleven) distinct joints. Oenital hook 

 springs from a large, chitinous area situated meso-dextrad, not very elongate, chit- 

 inous, stout, cur\ing weakl\- inward and tapering to acute apex. Subgenital plate 

 smooth and convex exteriorly, with caudal margin roughly convex; intro-sinistrad 

 on this margin is a stout, tapering, corneous style, with ventral surface heavily 



-^" In intercepta, the vicinity of the swollen i)ortions of the costal \-eins of the wings does 

 not api)ear to be normally as much sutYiised with buffy and in consequence is less opaque. 



"'' In these species the male abdominal and genitalic characters agree fully, e.xcept that 

 in inte'xepta the genital hook is decidedly longer and more slender, with distal extremity 

 very slight i\- enlarged. 



MEM. AM. EXT. SOC, 2. 



