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UNITED STATKS NATIONAL MUSEUM BULLETIN' 2 63 



miiToscopifally i)ul)esc'eiii. I'lilj)! ([)1. 28, Jig. 10) light 

 j-eildwisli, long, fully three times jis long as wide, 

 slightly curved, nnuuled apex, upii'al portion with a 

 few blaek bristles. 



Thorax nearlj'^ 1.3 tunes as long as wide or high. 

 Mesonoluin (pi. 28, fig. 5) nearly as long as wide, 

 somewhat quadrate, blackish, densely covered with 

 yellowish-grey tomentum, with whitish rather sparse 

 blunt pubescence, three light brownish rather faint 

 longitudinal streaks from anterior margin to level uf 

 dorsocentrals, the median one becoming obsolete 

 posteriorly and sublateral paii" from iiiner corners of 

 humeral calli to roots of dorsocentrals through inner 

 ends of suture, sometimes extending behind to roots of 

 prescutellars, a brownish spot on each of the bases of 

 presuturals, dorsocentrals, prescutellars, and inner 

 posterior supra-alars; humeral and notopleural calli 

 j'ellowish, somewhat obscured by greyish tomentum, 

 former with whitish bristly setae; scutellum nearly 

 twice as wide as long, colored and dusted as in mesono- 

 tuin liut sometimes \ erv slightly pale ajjically, with 

 a pair of l)rown lateral longitudinal streaks not ex- 

 tending to anterior margin. Pleura (pi. 28, fig. 6) 

 blackish, quite obscured by whitish-grey tomentum 

 and covered with very few fine blackish hairs ; prothorax 

 with two strong but short yellowish-white bristles 

 and fine Ijristly hairs; u])per portion of mesopleuron 

 more or loss reddish yellow, this paler portion with short 

 yellowisli white l)ristly liaii's dii'ected upward, posterior 

 margin with a row of similarly colored short bristles 

 below tlie black mesopleural bristle; sternopleuron 

 comparati\ely large, ventral margin with long yellowish- 

 white hairs; niesophragma and postnotum blackish, 

 obscured by yellowish-grey tomentum, the former with 

 a i)air of brownisli lateral spots. All bristles black: 

 humerals as long as anterior notopleural or jjresuturals, 

 but somewhat weaker; posterior notopleurals very 

 short, half as long as anteriors; dorsocentials nearer 

 to suture than to level of anterior supra-alars, almost 

 always parallel, distinctly longer than ])resuturals; 

 prescutellars slightly before a line connecting inner 

 posterior supra-alars, almost always ])arallel, as long 

 as dorsocentral; scutellars two jiairs, the basal longest 

 of all thoracic bristles but only slightly longer than 

 inner posterior sui)ra-alar, moderately divergent, apical 

 pair crossed; mesopleural and slerno|)leurals strong, 

 the latter directed U[)war(l; i)tero])leural yellowish, 

 strong, nearljf as long as slernopleiual one, directed 

 posteriorly. 



Abdomen (pi. 28, fig. 7) slightly broader and longer 

 than thorax, blackish with jiosterior margin of each 

 tergum more of less yellowisli, obscui-od by yellowisli- 



grey tomentum and covered with yellowish-white 

 setae, third to fifth terga each with a pair of blackish- 

 brown spots; fifth tergum distinctly longer than two 

 preceding ones combined, posterior margin with three 

 pairs of long black marginal bristles; genitalia com- 

 parati\ely large, blackish, obscured by yellowish-grey 

 tomentum, appendages yellowish. 



Wings (pi. 28, fig. 1) longer than Ixuiy, fully one- 

 thu'd as wide as long, anterior and posterior margins 

 moderately curved, apex rather broadly i-ounded, with 

 two costal spines, blackish brown, with basal jjortion 

 and nuxny spots whitish subhyaline; Ro+s nearly 

 straight, with apical half hardly undulate; Rj+s straight, 

 jjarallel with ni; r-m straight, slightly oblique, posterior 

 end nearer wing apex; m-cu somewhat perpendicular, 

 moderately convex; pterostigma sharply pointed, half 

 as long as second costal cell; anal cell shorter than 

 basal cell, with inferior angle moderately prolonged. 

 Wliitish subhyaline indentations, spots and dots as 

 follows: second costal cell with two large quadrate 

 spots at base and apex; pterostigma with a very small 

 dot at extreme base of costa; R, with three indentations, 

 one just beyond pterostigma, not attaining R2+3, 

 remaining two at middle of mouth almost quadrate 

 and extending to R2+3; R3 with two spots, one just 

 beyond end of R2+3 somewhat rounded and extending 

 to middle of width, the other semicircular and just 

 below median iiulentation of R,, exteiuling nearly to 

 R4+,5, before and after it with small dots; R5 with three 

 spots, tlie distal at apex, tiie ])roxinial almost above 

 ni-cu, tlie middle one nearer to basal spt)t than to 

 apical, lietween these three spots some small dots; 

 2M0 witli tliiee indentations and one spot, the latter 

 between the two basal indentations, sometimes a few 

 dots along m; basal two-thirds of ]M2 with two large 

 spots miited along C'li, at apical one-third three or 

 four dots, of which two or tiu'ee are situated along 111 

 and the remaining one along Cu; basal two-thirds of 

 Cu fi\'e large spots, tliree along Cu and two along anal 

 vein, all these united in the median longitudinal line, 

 ai)ical section of Cu with an mdentation; R witii one 

 large long spot, sometimes two dots along r-ni ; anal 

 lobe almost always whitish subhyaline, sometimes with 

 two snuill brownish dots on axillary vein. Ilalleres 

 light reddish yellow; squamulae light yellowish. 



Legs reddisli yellow, l)lackish ])ubescent, moderate 

 in length. Foreleg ([)1. 28, fig. 11) distinctly sliorter 

 than posterior |)au's: femur as long as tibia, chuMil 

 surface with two rows of black sjiarse bristly hairs, 

 externoventral margin with one row of four or five 

 black bristles; tibia nearly as long as tarsus, pubescence 

 on dorsal surface longer tlian elsewhere; first tarsal 



