28 



irXITED STATES NATIONAL MUSEUM BULLETIN 263 



beliind wliit-h tlicre is an ill-dofined narrow bruwnish 

 spot, its lower border with pale and blackish hai:-s. 

 Back of liead (1)1. 10, fiiX- 2) nioderatoly convex, yellow 

 but very slightly brownish at median i)ortion, a row of 

 sparse brownisli bristle-like hairs on lateral border of 

 occipital foramen, long yellowish hairs on lower por- 

 tions. Bristles black, genal bristle light yellow; superior 

 fronto-orbital farther from upper inferior fron to-orbital 

 than distance between the two inferiors; ocellar minute; 

 postverlical lacking; two pahs consjjicuous verticals; 

 occipital row consisting of about five mimite bristles. 

 Antenna (pi. 10, fig. 6) jcllow, with brown tliird seg- 

 ment becoming distinctly blackisli apically; third 

 segment nearly four times as long as wide, distinctly 

 narrowed at ape.x; second segment comparatively short, 

 about 1/3 as long as followmg one, with rather long 

 hlack bristly hairs along apical margin. Palpus (pi. 10, 

 fig. o) moderate in length, broadest about the middle, 

 the lower border furnished witli some long setae. 



Mesonotum (pi. 10, fig. S) black, with internal pos- 

 terior margin of humeral calli and lateral borders 

 reddish brown, obscured by a greyish tomentuin and 

 covered with dense minute black pubescence, five black 

 longitudiiuil streaks on disk, inlerru])ted at transverse 

 suture, and seen from behind, united at the very broad 

 black jjosterior border; humeral calli whitish yellow, 

 with internal anterior border reddisli or brownish l)lack; 

 notopleural and lateral postsntural caUi greyish yellow, 

 the latter comjjaratively narrow and short. Scutelhnn 

 waxy yellow, with ajjical ludf brown. Pleura (pi. 10, 

 fig. 7) moderately sliining black, but reddish brown on 

 the area between the front coxae and the humeral calli 

 and also at wing-bases, and posse.ssmg conspicuous 

 straw-colored spots as follows: one large spot covering 

 the entire posterior half of mesopleuron (ui reality a 

 continuation of the elongated spot immediately in 

 front of suture); one small round spot at the dorsal 

 end of the sternopleuron; one lai'ge spot on the meta- 

 |)leuron, as well as on the s]^ace just below it. Meso- 

 l)liragma shinhig black. All bristles black; hind pos- 

 terior supra-alar distinctly behind tiie level of the 

 prescutellar; one anterior supra-alar; two noto])leurals; 

 scapulars rather consj)icuous, the medijin pair more 

 slender; one mesopleural; jjteropleural lacking; one 

 pair scutellar much longer tlian scutellum, directed 

 straight back. 



Abdomen (i)l. 10, fig. 9) reddish yellow with l)Jack 

 bands and stripes, dense ])ale pubescence i)resent ; 

 first terguin with broad basal band extending along 

 entire lateral margin; second tergum with band on 

 anterior half not reaching basal margin and hardh' 

 reaching lateral margins; third tergum with broad 

 basal band narrowed laterally, its hind margin distinctlv 



incur\cd centrally where there projects a short tiiangu- 

 lar longitudinal stripe; fourth and fifth terga each with 

 rather naiTow median longitudinal band interrupted 

 just before posterior margin, and each with a pair of 

 lateral spots, the latter very large and subquadrate on 

 the fourth but A^'ery narrow along basal margin on fifth 

 tergum; the shining patches very large, transverse 

 oblong, reddish brow^n. Ovipositor broad, from dorsal 

 view about 2/3 as long as wide, yellow, rather sparsely 

 pubescent. 



Wmg (pi. 10, fig. 1) moderate in size, hyaline; R4+5 

 distinctlv bristled to about middle of apical section; 

 apical prolongation of anal cell very long, as long as 

 cell proper and distinctly longer than apical section of 

 anal vein; pterostigma light yellow, with brown apex; 

 costal band very weak, only narrowly distinct at apex, 

 very faint in Ei; anal streak narrow, not extending to 

 wing-margin. 



Legs light yellow, coxae and apical portion of huid 

 tibia somewhat brownish. Foreleg (pi. 10, fig. 10) 

 conspicuously shorter than mid- or liindleg; femur a 

 little longer than tibia, a row of about five black, rather 

 thick long hairs on dorsal surface of apical half, ex- 

 ternally some similar but shorter ones, on the internal 

 inferior margin of apical half a row of about nuie long, 

 very fine, nearly colorless hairs becommg shorter toward 

 apex, four brown shorter hairs on external inferior mar- 

 gin of apical fourth, remaining pubescence ver}' sparse, 

 much shorter and brownish; fore tibia nearly as long as 

 tarsus, covered with brownish pubescence, that on 

 apico-internal area long and yellowish white, two short 

 light reddish-yellow apical spurlike bristles, a row of 

 many yellowish-brown bristles the same length as spur- 

 lilce ones along the apical margin; first tarsal segment 

 very slightly shorter than the following four together, 

 some long black hairs on dorsal surface, and rather long 

 light yellow bristly hah's on internal ventral surface, 

 externally a row of black spinelike bristles. Midleg 

 (pi. 10, fig. 12) longer than hindleg; femur with short 

 blackish setae intermbced with white ones on external 

 dorsal surface of apical half, a row of very sparse longer, 

 white hau-s along external ventral margin, hind tibia 

 as long as femur, covered with black pubescence, a 

 black apical spur one-third as long as first tarsal seg- 

 ment, and three small brownish ajjical spmelike bristles; 

 tarsi shorter than tibia, first segment conspicuously 

 longer than the remaining four together, yellowish- 

 brown pubescent, ventral surface with two rows of 

 black, spinelilve bristles longer and yellowish proximally. 

 Hind femur (pi. 10, fig. 11) conspicuously longer than 

 the tibia, dorsal surface with long, pale hairs very sparse 

 on basal half and very conspicous ami long on apical 

 half, A'entral surface wdth two irregular rows of shorter 



