90 



UNITED STATES NATIONAL MUSEUM BULLETIN 263 



mesopleiiroii willi l)liiiit whitisli setae on dorsal por- 

 tion and ahoiil three wliitish bristles alons; ])osterior 

 niar<iin below brownisli inesojjleural bristle; ptero- 

 j)leiin)n with alxml three short bristly wiiitisli hairs 

 below brownisli pteropleural t)ristle, whicli is directed 

 posteriorly; sternopleuron with fine whitish ])ul)escence, 

 sternopleural bristle whitish and directed upward; 

 ineso])hragina and postnotiini wilhoul any niarkin<i-. 

 All Ijristles more or less l)rownisli, never l)lackisli; 

 Hiiinerals as \on\r: as presiitiirals or anterior nolopleural; 

 posterior nolopleurals ralhci' whitisli, nearly half as 

 long as anferiors, distinctly sloni; dorsocentrals con- 

 spicnouslv closer to snlnre than to lo\'ol of anterior 

 sui)ra-alars, rather divergent, sUghtly longer than 

 j)rescutellar, the latter situated distinctly ahead of 

 line connecting inner posterior supra-alars, far ahead 

 of posterior margin of niesonotum; scutellais one |)air, 

 longest of all thoracic bristles, parallel. 



Abdomen (|)1. 33, fig. 8) shorter than thorax, as wide 

 as the latter, l)lack, entirely obscured by l)idwnisli-grey 

 tomentiim and covered with sparse whitish pubescence 

 directed obliquely inward; fiftii terguni nearly as long 

 as tlie two preceding terga together, with two ])airs of 

 brownish bristles along posterior margin; genitalia 

 moderate in size, shining black. 



Whig (p\. 33, fig. 1) distinctly longer llian body, 

 fully 2.5 times as long as wide, with ape.x narrowly 

 rounded; costa rather strongly curved, with two black 

 costal spines; subcosta nearly straigiit, apical portion 

 quite obsolete; R2+3 sinuate on apical half; ^it+s not 

 bristled, straight, slightly divergent from straight m; 

 r-m straight, ])erpendicular, much closer to middle of 

 IM2 than to m-cu, the latter more or less convex; 

 pterostigma very short, pointed, nearly one-third as long 

 as second costal cell; anal cell distinctly shorter than 

 basal cell, apical margin straight, inferior angle nearly 

 90°. Wing blackish brown, l)asal half whitish subhyaline 

 with whitish siibh^'aline spots as follows: ])terostigma 

 blackish, the extreme base greyish svibhyaline; Ri with 

 two spots, the i)roximal one just beyond ajiex of ptero- 

 stigma about twice as long as distal and occu|)ying the 

 entire width, the distal s])ot very close to i)roximal 

 extending to R2+3; R3 with four spots, two round along 

 apex, a smaller s])ot just l)eyond a])ex of R,, and re- 

 maining one at middle of apex reaching to R4+5, the 

 basal half almost subhyaline, a light brownish narrow 

 oblique cross band at about the middle beyond sub- 

 hyaline portion a very small yellowish-brown dot; R5 

 with four spots, tiie ])roximal one very large and very 

 close to r-m; the distal one occiq^ying entire aj)ex, 

 just in front two transversely connected spots below 

 distal spot in R3; l\r, with four spots, of which three 

 are equidistant, the distal two attaining in, the re- 



maining connected to round spot at anterior corner; 

 iMo almost subhyaline, with a faint brownisli narrow 

 median cross band extending into middle of Cu. 

 Halteres reddish yellow ;squamiilae dirty light brownish. 



Legs liglit reddish yellow, brownish pubescent, hind 

 femora more or less blackish basally. Foreleg (pi. 33, 

 fig. 9) shorter than tiie other two paii's; femur longer 

 than tibia, dorsal surface with two pairs of long black- 

 ish bristly hau's, externoventral margin with about six 

 blackish bristly hau's, the median two conspicuously 

 long; tibia as long as tarsus, pubescense on dorsal siu'face 

 longer than on others; first tarsal segment nearly half 

 as long as tilna, nearly as long as the four following 

 segments together, brushlike bristles on internoventral 

 surface yellowish white and rather dense. Midleg (pi. 33, 

 fig. 11) longer than hindleg: femur a little sliorter tlian 

 tibia, no conspicuous bristly hahs; tibia a little longer 

 than tarsus, with one black apical s])ur, jjubescence on 

 dorsal surface rather cons])iciions; first tarsal segment 

 distinctly shorter than half the length of tibia, as long 

 as the fonr following segments together, externoventral 

 margin with blackish bristles, the median one cons])ic- 

 uously long and nearly as long as tibial sj)ur, bruslilike 

 bristles as those on foretarsus. Hindleg (pi. 33, fig.lO) 

 somewhat thicker than the others: femur as long as 

 tibia, without conspicuous bristly hairs; tibia distinctly 

 longer than tarsus, pubescent as m midtibia; first tarsal 

 segment hardly half as long as tibia, slightly longer tlian 

 foiu" following segments together, ventral surface 

 bristled as in midtarsus. 



Length: Body 2.2 mm, wing 3 mm. 



HoLOTVPE. — Male, Iriomote Is., Jan. 13 (NIAS). 



Genus Elaphromyia Bigot 



Elaphromijia Bigot, IS.^jO, p. 214.— Shiraki, lO:',:',, p. 30:5. 

 Mesanopin I'liidiTli'iii, 1913, p. 369. 

 Piirallrloplira Bczzi, 191:',, ]•,. l.'>."). 



Elapliroitiyia incompleta punctata, new subspecies 



Plate 34 



This subspecies dift'ers from typical Elaphromyia 

 incomplefa Shiraki (1933. p. 39S, fig. 79, pi. 11, fig. (1) 

 in the abdominal ])attern. A Inow nish species of small 

 size, witli narrow dark brown wings containing numer- 

 ous subhyaline s])ots, reddish-yellow legs, and blackish 

 spots on the last two (male) or three (female) abdominal 

 terga. 



Male. — Head as wide as thorax, 1.7 limes as wide 

 as long, nearly 1 .3 t inies as wide as high. Frons (pi. 34, 

 fig. 3) greyish yellow, with broad lateral borders 

 somewhat irregularly darkened, tomentose and very 

 inconspicuously pubescent, wider than one eye, iieai'ly 

 parallel-sided, moderately hollowed at nii(hlle; orbits 



