280 
The Philippine Journal of Science 
1921 
eight ridges, conspicuous but less prominent than those bordering 
foveas at vertex, arranged as follows: One bordering each lat- 
eral margin of ^ronotum ; another parallel to and very near 
each of former; the last two pairs almost aligned with ridges 
at vertex. Three much less prominent ridges on mesoprae- 
scutum, equidistant from each other and from the lateral mar- 
gins, of latter. Five obsolescent, longitudinal, subequidistant 
ridges on mesoscutum. Legs concolorous with body; hind legs 
slightly longer than thorax ; first and second pairs slightly shorter 
than third. Characteristic basal spur on hind tibia concolorous 
with the rest of leg. Hind tibiae and tarsi of all legs equipped 
with dark brown, distal spines. Wings hyaline. Forewings 
about three times as long as broad; subacute at apex; R+M+ 
Cu, cubital petiole, and media in almost one continuous straight 
line; R+M+Cu and cubital petiole subequal in length; area of 
first marginal cell about half that of second; a dark brownish 
tinge on terminal portions of veins; pterostigma wanting; a 
dark brown, acutely triangular spot between branches of media, 
and another between branches of media and cubitus. 
Abdomen subequal in length to head and thorax combined, 
gradually tapering caudad. Longer pair of genital forceps 
about two and three-fifths, times as long as anal valve, the 
forceps consisting of two parts: (1) a suberect, slender pair, 
curved cephalad near apex, about four times as long as diameter 
at base, abruptly pointed apicad; and (2) a shorter pair, about 
half as long as, and situated cephalad and parallel to, former, 
about four times as long as diameter at base, slightly curved 
cephalad, subacute apicad. Anal valve without process, about 
one and a half times as long as wide, somewhat constricted 
basad ; the rest of uniform thickness. Penis drawn subhorizon- 
tally cephalad beyond anal valve to about seventh abdominal 
tergite; length from dorsal surface of genital segment to apex 
of penis about three and one-third times that of anal valve. 
Female . — Dorsal and ventral valves subequal in length ; 
both acute and tapering, forming with the genital segment a 
very slender, subconical projection which is slightly shorter 
than eighth abdominal segment. Eighth abdominal sternite 
beset caudad with numerous long, bristlelike hairs. 
Luzon, Manila, Bureau of Government Laboratories accession 
No. 9931, February 11, 1909, two males and eight females on pins 
and two males on slides (Banks). Mindanao, Kolambugan, 
Bureau of Science accession No. 18567, June, 1914 (Banks). 
