FRUIT FLIES OF THE RYUKYU ISLAXDvS 



73 



former, tlie proxiiiial uiie occupies entii'e basal portion 

 and is entirely united with basal spot in Ri, remaininti- 

 spot very small, placed between basal and median 

 spots; R with two larcje spots; R.5 with seven or eight, 

 the basalmost just after r-m is largest and occupies 

 entire width, apical spot nearly filling apex, the next 

 two, below the apical spot of R3, transverse, united, 

 between them and basal spot are three or four; iMo 

 with three or four, the basal isolate, the remainhig 

 more or less united; 2M2 with four, three of these 

 along whig margin, remaming one along basal half 

 of m and united with median marginal spot; ( 'u with 

 one distinct spot near apex, the renuiinmg portion 

 almost white subhyaline, leaving two or three brownish 

 spots, one of which is placed immediately beyond end of 

 anal vein, and one above it, in addition one small 

 rather distinct brown spot on inferior angle of anal 

 cell; anal l(il)e with a l>rownish small spot near apex. 

 Squamulae light yellowish; halteres orange yellow. 



Legs yellowish brown, with the femora black ex- 

 cepting the a])ices, black jjubescent. Foreleg (pi. 27, 

 fig. 10) conspicuously shorter than the others: femur 

 as long as tibia, dorsal surface with two rows of black 

 sparse bristly hairs, externoventral margin with five 

 long brown bristly hairs; tilna nearly as long as tarsus, 

 pubescence on dorsal surface long; first tarsal segment 

 as long as four following segments togetlier, brushlike 

 bristles on internoventral surface yellowisli and ratlier 

 dense, but short. Midleg (pi. 27, fig. 11) longest: femur 

 slightly shorter than tibia, pubescence on external sur- 

 face long; tibia distinctly longer than tarsus, slightly 

 curved, with one black apical spur; first tarsal segment 

 as long as the four following segments together, brush- 

 like bristles as in front tarsus. Hindleg (pi. 27, fig. 12): 

 femur slightly longer than tibia, dorsal subapex with 

 one black long bristly hah-; tibia slightly longer than 

 tarsus, pubescence on dorsal surface long; first tarsal 

 segment longer than the three following segments 

 together, basal externoventral margin with two long 

 black conspicuous bristles, brushlike bristles as in front 

 tarsus. 



Length: Body (without ovipositor) 3.1 mm, wing 

 3.6 mm. 



HoLOTYPE. — Female, Liomote Is., Jan. 6 (NIAS). 



Genus Euaresta Loew 



Euaresta Loew, 1873, p. 296. — Hcndel, 1927, p. 172. 



Euaresta punctata, new species 



Pl.vte 28 



A small greyish-brown sjjecies with tlie wings dark 

 brown witli white sul)hyaline spots, the legs light 



orange yellow, and the abdomen with ])aire(l brown 

 spots. 



M.\LE. — Head as wide as thorax, 1.5 times as wide 

 as long, 1.3 times as wide as high. Frons (pi. 28, fig. 3) 

 orange yellow, with a somewliat greyish median longi- 

 tudinal streak, twice as wide as one ej'e, lateral margins 

 more or less curved outward, nearly the same width 

 throughout enth-e length, flat but very slightly convex; 

 orbits comparatively broad, conspicuously white to- 

 mentose, with very fine snow-white pubescence; lumde 

 conspicuous, whitish-grey tomentose, iialf as wide as 

 frons, well elevated; vertex more or less dull yellowish, 

 ocellar triangle whitish tomentose, a rather distinct 

 straight transverse carina. Face (pi. 28, fig. 2) nearly 

 twice as wide as long, moderately narrowed ujiward, 

 with lateral margins straight, moderately hollowed, 

 oral margin slightly ])roduced foi-ward, more or less 

 waxy yellowish and motlerately obscured by wliitish 

 tomentum, lower median portion distinctly yellowish 

 brown or reddish brown; orbits comparatively broad, 

 distinctly white tomentose; vibrissal edges rather 

 broad, not distinctly carinate, white tomentose, fur- 

 nished with very short whitish setae; antennal grooves 

 not distinct. Back of head (pi. 28, fig. 4) moderately 

 swollen, upper portion moderately hollowed in median 

 area, light j^ellowish, whitish tomentose, with a large 

 deep black median ])atch on upper portion, lateral 

 swellings witli wliitish setae, lower margin with long 

 whitish bristly haks; cheeks about one-fifth as high as 

 eye, oral margin with short whitish bristly hairs, genal 

 groove not distinct. Eyes moderate in size, in front 

 view the hiner angle obtusely rounded; in profile rather 

 perpendicular, posterior margin strongly convax. upper 

 angle distinctly narrower tlian lower. All bristles 

 mostly black: ocellars divergent, as long as lower su- 

 perior fron to-orbital but finer; fronto-orbitals 2:2, the 

 upper superior \ni'u- yellowisli white and shorter than the 

 lower superior; inferior fronto-orbitals as long as lower 

 superior, directed inward but not crossed; postverticals 

 yellowish w'liite, almost always parallel, a little longer 

 than upper superior fronto-orbital; inner vertical 

 bristles longest of all head bristles, nearly ijarallel, 

 outer verticals yellowish white, nearly half as long as 

 inners; occipitals one pair, sliglitly directed inward, 

 distinctly shorter than postvertical; bristles of occii)ital 

 rows yellowish white, one to four, intermixed with 

 black weak bristles; genal yellowish white. Antennae 

 (pi. 28, fig. 9) light orange yellow, short, not attaining 

 oral margin; second segment nearly two-thii'ds as long 

 as third, without distinct median bristle; third segment 

 almost twice as long as wide, dorsal margin nearly 

 straight, ventral nuirgin strongly convex, apex round; 

 arista black, basal segments more or less yellowish, 



