96 



UNITKI) SSTATKS NATIONAL MUSEUM BULLKTIN 2 03 



Winsr (pi. :55, fit;. 1) (il)luiiii-, ncsirly as Ions; as body, 

 liardly lialf as wide as Ions;, irradiially narrowed toward 

 narniwly rounded ai)ex; coslal \ ein moderately convex, 

 witii eons])icuous incisiciii at hase of pterostignia, 

 tiu-ee black costal spines; subcostal \ ein distinct]}' 

 curved into second costal cell; Ri an<l li,\i ratiier 

 slronijly ciu'ved toward cosia apically; Rj^s nearly 

 slraiiiht, very sparsely l)ristled from base to far beyond 

 r-m; in strontily sinuate medially, sli<iblly divergent 

 from K.,_,_5 apically; r-iii just beyond middle of lAL, 

 straiulit, obli((ne, its anterior end nearer to winsi' tip; 

 ni-cu sliu'litly convex, oi>li(|ue, its anterior end closer 

 to wini;' base; pterostiunia \ ery sliorl, one-lliii'd as 

 long as second costal cell, moderately pointed; anal 

 cell distinctly shorter than basal cell, apical margin 

 straight, inferior angle more or less pointed. Wings 

 translucent, with a large roundish brown median 

 patch exten<ling from Ro+j <o ])oslerior wing margin 

 and from apex of basal cell to base of 2Mj, with ten 

 very narrow rays and one slightly broader blackish 

 ray. Rays never doubled, approximately snbecpial in 

 width, three in costal cell, tiie first on humeral cross- 

 vein, the second in middle of second costal cell and the 

 third at apex; two in R,, one at ti]) of ])ferostigma and 

 liie <i(her in center of a])ex, between them a short but 

 broader ray attaining middle; two in R3, one at tip of 

 R2;3 and other in middle of mouth, a very short ray 

 attaining R2+3, situated between first ray and the 

 preceding one; in R.s two, along R4^s and m; between 

 second ray of R, and first ray of R5 a faint short median 

 streak from costa. and at center of apex of R-, a similar 

 streak which is almost always distinct; 2M2 with an 

 anterior ray and a broader ])osterior one, l)etween the 

 former and posterior ray of R-, a median triangular 

 marginal spot. Pterostigma brownisii in basal half, 

 middle of coloi-ed portion with a minute hyaline spot. 

 Median |)atch with many small hyaline dots irregu- 

 larly placed; IM2 with two rounded yellowish-brown 

 callosities, the apical just below r-m and conspicuously 

 large, trans\erse oblong and \'ery pi'onunent, the basal 

 along base of Cu distinctly small and much less con- 

 sjjicuous; anferobasal corner of 2^1^ with a similar 

 small round spot; R3 with two sindlar small but less 

 elevated round spots along R^+s in dark colored ])ortion; 

 R, with a \ery distinct large but not ele\ated rouiul 

 black s|)ot just above m-eu, just abo\-e it an ill-dehned 

 j'ellowish-brown longitudinal spot along R4+.^; just 

 inside r-m a smaller black spot, llalteres light reddish 

 yellow, head whitish; scpiamulae ligiil yellow. 



Legs yellow, black ])ul)escenl, with a blackish-brown 

 ring near the ti|) and the base of each fennir and near 

 base of each tibia, but in forelegs very faint and trace- 

 able ordy on exterind surface, the basal fermoral ring 

 entu'ely obsolete, the basal ring in the fotu- posterior 

 femora incom|)lete. Foreleg (pi. 85, fig. 11) conspic- 



uouslv simrter than others; fenmr ciimparali\'ely thick, 

 with two irregular rows of sparse thick wiiite bristles, 

 the ajtical four or six black and thiimer dorsally, dorsal 

 svu'face, with li\e white long conspicuous bristles, the 

 two apical of wiiicii are black on externoventral margin; 

 tibia sligiitly shorter than fenuu-, ])ubescence longer on 

 dorsal surface; tarsi distinctly 1.;^ times as long as tibia, 

 first segment longer than half the length of tibia, siiorter 

 than the foiu' following segments together, bristle row 

 on internoN eiilral margin yelhnvish, black on externo- 

 ventral margin. Midleg (pi. 35, fig. 12) not longer than 

 hindleg; femur distinctly narrower tiian the other 

 femora, very slightly longer that^ tibia, basal ring 

 rather broad on externoventral surface, apical one- 

 fourth of externoventral margin with somewhat distinct 

 black bristly hairs; tibia as long as tarsus, ai)ical spui- 

 yellowish with blackish tip, in addition three sjmrt 

 yellowish bristles on external apex, basal ring rather 

 faint; first tarsal segment longer than half the tibia, 

 nearly as long as the four following segments together, 

 bristle rows on venti'al margins yellowish, not dense, 

 short black spinelike bristles on imder surface of second 

 to foiu'th segments two or four. Hindleg (pi. 35, fig.l3) 

 very sligiitly longer than mitlleg, more or less thicker 

 than latter; femur as long as tibia, distinctly narrowed 

 toward each end, basal ring incomplete, ventral apex 

 blackish, externoventral margin with a row of somewiiat 

 distinct black bristly hairs, distinctly sparser toward 

 basal portion, internoventral margin with black bristly 

 hairs in basal two-thirds; tibia slightly shorter than 

 tarsus, slightly but di^tiiu-tly curved outward, tiie 

 rather bristly hairs in two rows on dorsal surface dis- 

 tinctly longer than the others; first tarsal segment 

 nearly half as long as tibia, distinctty shorter than the 

 four following segments together, internoventral margin 

 with long yellowish rather sparse bristles, externo- 

 ventral margin witli black short setae, jjubescence on 

 dorsal siu'face rather long. 



Length: Body 2.8-3.3 nnn, wing 2.S-3.2 mm. 

 Female. — Shnilar to male. Sixth abdomiiud tergum 

 (])1. 35, fig. 10) slightly shorter tiian preceding, strongly 

 shining, nearly nontomentose, posterior margin with 

 about three pairs of conspicuously long black bristles; 

 basal segment of o\ipositor shining yellow, base black, 

 sjjarsely black pubescent, long and depressed, nearly 

 as long as the four preceding abdominal terga together, 

 with lateral margins siuirp. Palpi less narrowed toward 

 rounded apex. 



Length; Body (without ovipositor) 3-3.2 mm, wing 

 3-3.3 mm. 



Materl\l examined. — Seven males and eight females 

 from Okinawa Is., Mar. 27, Apr 23. 



Distribution: Formosa; Okinawa Is. 

 Re.marks. — The present specimens are almost always 

 darker than tinise from Formosa. 



