FRUIT FLIES OF THE RYUKYU ISLANDS 



31 



alars, shorter than prescutellars, whicli are parallel 

 and on a line coimecting inner jjoslerior supra-ahirs; 

 two paii's scutellars, apical directed moderately inwards 

 and shorter than basal niesopleurals two, the lower 

 very weak; pteroplemal and sternupleural one, the 

 latter dii'ected distinctly upward. 



Abdomen (pi. 11, fig. 9) as long as thora.x, slightly 

 broader than the latter, entirely shining castaneoiis 

 black, blackish pubescent, long erect hau's on lateral 

 border of tlie second tergite; fifth tergite nearly as long 

 as i)receding two together, five pairs of black bristly 

 hau's along posterior margin; venter somewhat paler 

 than dorsum, witii last sternite cons])icuously ochreous; 

 genitalia conspicuous, basal segment shhiing black, with 

 niai'.y black bristly hau's, tlie doi'sal appendages broad, 

 ventral very narrow with a siiort ajncal stylet, both 

 yellowish. 



Wing (pi. 11, fig. 1) longer than the body, nearly 

 1/3 as wide as long, gradually narrowed toward ajje.x; 

 costal veui distuictly attaining tip of vein m, costal 

 spine very short and nearly as long as costal bristles; 

 Ri suddenly bent tipward at apical portion; R2+3 hardly 

 undulate; R4+5 with eight distinct l^ristles from its base 

 to r-m; m slightly curved and almost parallel with 

 R4+5 at apical half of a[)ical section; r-m straight and 

 perpendicular, well beyttnd middle of iMi; m-cu slightly 

 convex, oblique, ending well basad of whig margin, 

 connected at right angle with cu; pterostigma 2/,3 as 

 long as second costal cell, ape.x not pointed; anal cell 

 distuictly shorter than basal cell, but with sharp, long 

 inferior prolongation. Brownish black, with extreme 

 base more or less yellowish grey, second costal cell 

 grey with base light brown and apex brown, allulae 

 and anal lobe greyish, tlie hyaline markings as follows: 

 costal two, the first just beyond pterostigma and occu- 

 pying nearly the l)asal one-thii'd of mouth of Rj, 

 extending to or just below about middle of tlih'd section 

 of m in a long triangle, a small spot along C'u beh>w tip 

 of latter; apical spot from beyond middle of apical 

 section of R4+,, to tip of m, gradually broadened below, 

 its outer inargui nearly parallel with costa and its 

 inner margin more or less straight; subapical spot tri- 

 angular, extending from below middle of apical section 

 of R4+5 to wing margin, distinctly widened below, its 

 outer margin parallel with inner margin of apical spot 

 and ending at one-thu'd the distance from tip of mouth 

 of 2M2, its inner margin parallel with m-cu and enduig 

 at tip of Cu; the remaining spot occupying nearly basal 

 haK of Cu, excejit at extreme base, where there is a 

 small spot. Halteres yellowish, with comjiaratively 

 large, more or less brownisli knob; squamulae greyish 

 with black margin. 



Legs moderate in length, yellowish-brownish pubes- 

 cent. Forelegs (pi. 11, fig. 10) shortest; forefemur with 

 two rows of black bristly hairs on dorsal surface, one 

 row of a[)[)roxiiuately six black long bristle hairs along 

 externo\ entral margin, external surface covered wilh 

 black sparse strong setae; tibia nearly 3/4 as long as 

 femur, as long as tarsus; first tarsal segment shorter 

 than the four following together, brushlike bristles on 

 interiioventral surface sparse and brownish, minute 

 apical spines of each segment brownish. Midlegs 

 (pi. 11, fig. 11) longest; midfemur as long as tibia, 

 externoventral margin with black long setae; tibia with 

 only one conspicuously long black apical spur; tarsi 

 sliorter than tibia, first segment nearly half as long as 

 tibia, shorter than the four following together, brushlike 

 bristles on internoventral surface rather short and very 

 sparse, brownish, the three segments following with 

 two black ajiical spinelike bristles ventrally. Hind 

 femur (pi. 11, fig. 12) as long as tibia, apical third of 

 dorsal surface with two pau's of black long bristly hairs, 

 apical thu-d of externoventral margin with very few 

 brownish hau's; tibia longer than tarsus, the pubescence 

 longer on ventral surface; fij'st tarsal segment longer 

 than the four following together, shorter than half the 

 tibia, bristles and spines of tarsi as m midleg. 



Length: Body 4-4.5 mm, wings 4.4-4.8 mm. 



Types.— Holotype, d", USNM 6937.5; paratype, 

 cf (NIAS) ; both collected on Mt. Yonaha, Okinawa 

 Is., April 1953. 



Carpopltthoracidia, new genus 



Near Carpophthorella Hendel, but distmguished by 

 the fronto-orbitals 1:3, the hardly plumose arista, the 

 nonbristled R4+5, the second longitudinal band of wing 

 distinctly divided into two, connectmg with the costal 

 band, and other characters. 



Fem.\le. — Head as wide as thorax, distinctlj- wider 

 than long, 2/3 as long as high. Frons parallel-sided, 

 nearly 1/3 as wide as head. Face rather narrow, slightly 

 lioUowed in the middle. Back of head rather strongly 

 swoUen beneath; cheeks 1/6 as high as eye, wiiich is 

 narrowed below with rather straight posterior margin, 

 microscopically pubescent. Antennae inserted at middle 

 of eye, much shorter than face; tiiird segment rounded 

 at tip; arista pubescent. Palpi very short, broad. 

 Thorax iu)t long, moderately shining, with pale-colored 

 longitudinal pattern on tlie mcsonotmn. Abdomen 

 short, moderate in width ; G terguni nearly a half as long 

 5th; ovipositor moderate in length, flattened. Whigs 

 comparatively large, with a very broad costal band and 

 two rays; R2+3 straight; Rj^^s nearty parallel with R2+3, 

 but apical section slightly curved posteriorly, bristled 



