FRUIT FLIES OF THE RYUKYU ISK^NDS 



79 



segment distiiu'tly shorter than tlie four i'ollowhig 

 segments together, brushlike bristles on ventral surface 

 ratlier long and yellowish brown. Midleg (pi. 29, fig. 12) 

 longer than liuuUeg; femur distinctly shorter than tibia, 

 externoventral margin with a few yellowisli bristly 

 hah's on basal half; tibia longer than tarsus, with a 

 long black apical sjjur; first tarsal segment distinctly 

 shorter than the four foUowmg segments together, 

 brushlike bristles on ventral surface nearly as in 

 front tarsus. Hindleg (pi. 29, fig. 13) more or less 

 thicker than midleg; femur shorter than tibia, dorsal 

 apical portion with two distinct but short black bristly 

 hairs, ventral margins with long hau's, of which an 

 apical few on external margin are rather strong; tibia 

 slightly longer than tarsus, somewluit broadened at 

 middle; first tarsal segment distinctly siiorter tlian the 

 three following segments together, brushlike bristles 

 on ventral surface as in midtarsus. 



Length: Body 3.2-4 mm, wing 3-3.3 mm. 



Female. — Quite similar to male. Abdomen (pi. 29, 

 fig. 10) distinctly yellow to reddish yellow on ])osterior 

 marginal border of each tergum; sixth tergum nearly 

 as long as fifth, almost always with three pairs of 

 rather erect black marginal bristles; basal segment of 

 ovipositor broader than long, black, more or less 

 shining, fine pubescent, pubescence on basal half 

 yellowish and rather dense and remainder rather sjjarse 

 and blackisli; second segment of ovipositor blackisli; 

 tip light reddish yellow, and a])ex quite triangular. 



Length: Body (without ovipositoi-) 3.5-3.8 mm, 

 wing 3.3-3.5 mm. 



Material examined. — Ishigaki Is.: 2cf, Feb. 6, 

 12, 9, ^Lir. 7; Okhiawa Is. : 3 &, Mar. 25, 4 9, Mar. 26, 

 27 and Apr. 20, 23; Amami-Oshima Is.: cf , Apr. 7, 4, 9, 

 May 1-9; Iriomote Is.: 9, Jan. 19; all in NIAS. 



Distribution. — India, Formosa, Ryukyu Islands. 



Genus Protephritis Shiraki 



Protephriiis Shiraki, 1933, p- 439. 



Protephritis asstmilis, new species 



Plate ISO 



Allied to Tephritis saideri Enderlein (1911, p. 456, 

 fig. A), but easily distmguished from it by the wing 

 pattern, the hyaline spots of the anterior half of the 

 anal lobe never being developed, and the basal spot 

 of Rs alwaj-s rather close to R4+5 and not traversing m. 

 The striated mesonotum, the evenly black abdominal 

 terga, the comjjaratively long third antennal segment, 

 and the com])aratively small genitalia are other 

 distinguishins; characters. 



Male. — Head as wide as thorax, nearly iwice as 

 wide as long, sliglitlj' liigher tlian long. Frons (pi. 30, 

 fig. 3) broader than one eye, nearly parallel-sided but 

 abruptly narrowed at antennal bases, rather flat, 

 ochraceous, more or less dusted, eye-margins snow- 

 white tomentose and yellowish pubescent, middle por- 

 tion with a few slightly longer hairs; vertical calli 

 not distinctly elevated, extending to middle of frons, 

 somewhat whitish tomentose; ocellar triangle com- 

 paratively small, more or less black, wlutish setae 

 surrounding anterior ocellar, a very narrow transverse, 

 whitish tomentose carina between lateral ocelli and 

 roots of inner verticals. Face (pi. 30, fig. 4) nearlj- as 

 long as wide, concave, oral margin produced forward, 

 light waxy yellow, obscured by white tomentum; 

 orbits very narrow, snow-white tomentose; vibrissal 

 edges broad, distinctly yellow, with short black setae; 

 antennal grooves narrow but rather distinct, attaining 

 oral margin. Back of head (pi. 30, fig. 2) rather con- 

 spicuously swollen, upper portion distinctly concave, 

 light yellow, u])]ier i)ortion blackish except eye-margins, 

 which are wliitish tomentose, lower half with very 

 sparse short black setae, ventral border with con- 

 spicuously long yellowish bristly liairs. of which tlie 

 anterior sexeral are black; clieeks narrow, colored and 

 tomentose as on swellings of back of head, witlv fine 

 genal groove, pubescence black. Eyes comparatively 

 large, in fi-ont view the imier margin obtusely angled 

 and outer margni nearly evenly covex; in profile more 

 or less oblique, nearly 1.6 times as long as wide, i>os- 

 terior margin slightly and anterior margin curved 

 strongly outward, upper and lower angles rather 

 broadly rounded, but former a little narrower than 

 latter. Antennae (pi. 30, fig. 5) inserted at middle of 

 eye very closely, comi)aratively short, yellow to light 

 reddish yellow; second segment nearly half as long as 

 one following, median bristle not distinct, apical nuir- 

 gin with short black setae rather evenly placed, at 

 inferior corner two or more long black bristles; third 

 segment nearly twice as long as wide, narrowed towai-d 

 the round apex, dorsal margin more or less concave, 

 ventral margin rather strongly convex; arista very long 

 brown or black, with base j-ellowLsh, black pubescent. 

 Palpi (pi. 30, fig. 6) comi)aratively large, yellowish 

 white or yellow, nearly three times as long as wide, 

 the dorsal margin straight, ventral margm distinctly 

 convex, apical portion with black bristles. All bristles 

 black except post verticals; the outer verticals, oc- 

 cipitals, and bristles of occipital row yellowish; ocellar 

 bristles divergent, nearly as long as lower superior 

 fronto-orbital, distuiclly finer than latter; fronto- 

 orbitals 2:3, the superior paii-s stronger than inferior, 

 upper superior shorter tlian latter, lowest inferior con- 



