FRUIT FLIES OF THE RYUKYU ISLANDS 



37 



Genus Uetidelina Har<ly 



Pseudopheniscus Hendel, 1',I13 (error), p. 82; 1914 (preocc), 



pp. 83, 88.— Shiraki, 1933, p. 164. 

 Hendelina Hardj-, 1951, p. 179. 



Hendelina fossa ta (Fabriciiis) 



Pl.\te 14 



Tephritis fossata Fabricius, 180.5, p. 320. 

 Anomoia elimia Walker, 1849, p. 1033. 

 Ortalis regularis Doleschall, 1859, p. 119. 

 Trypiia fossala (Fabricius). — Bigot, 1892, p. 224. 

 Psexidospheniscus fossalus (Fabricius). — Shiraki, 1933, p. 1G9. 



Blackish species of rather small size, easily dis- 

 tinguished from the known oriental Hendelina by the 

 wholly hyaline costal cells and the three broad hj'aline 

 apical wing bands. 



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

 as long, 1.6 tunes as high as long. Frons (pi. 14, fig. 3j 

 reddish yello\\-, \\itli very sparse brown erect pubes- 

 cence, orbits covered with a whitish tonientum, 

 parallel-sided, a little narrower than eye, very slightly 

 elevated above eyes; vertical calli moderately shining 

 bvit rather ill defined, not e.xtending to middle of 

 frons and not distmctly oblique; ocellar triangle some- 

 what blackish, with comparatively large ocelli which 

 are equidistant; rather distinct transverse carina be- 

 tween roots of inner vertical bristles; lunnle not dis- 

 tinct, small, somewhat concave, brown. Face (pi. 14, 

 fig. 4) somewhat yellowish, distinctly shorter than 

 frons, comparatively narrow but shorter than inferior 

 width, with straight lateral margms, above the upper 

 mouth-edge a distinct transverse sulcus; orbits very 

 narrow, distinctly widened below; antennal grooves 

 distuict, rather deep, brown; vibrissal edges with rather 

 numerous black short bristles; epistoma rather con- 

 spicuous. Back of head (pi. 14, fig. 2) black, with 

 occiput and lateral portions yellowish brown, rather 

 flat with lower portion moderately sw"ollen; cheeks 

 very narrow, rather sparsely pubescent. All bristles 

 black: fronto-orbitals 2:3, superior pairs thicker than 

 inferiors, which are dii'ected moderately inward the 

 anteriormost shortest; ocellar bristle nearly as long 

 as anterior inferior fronto-orbital, slightly directed 

 inward; postverticals fine, shorter than ocellars, mod- 

 erately divergent; inner verticals strongest, parallel, 

 a distinct bristle (inner occipital) behmd between 

 inner vertical and postvertical bristles; bristles of 

 occipital row rather long and straight, extending to 

 near middle of eye; genal bristle long. Antennae {\A. 

 14, fig. 9) ochraceous, with third segment brownish, 

 conspicuously shorter than face; second segment com- 

 paratively large, half as long as the following one. 



apical margin ^nth one row of rather strong bristly 

 hairs, median bristle nearly half as long as this seg- 

 ment; third segment nearly twice as long as wide, 

 with apex evenly rounded, dorsal margin distinctly 

 ciliate; arista distinctlj'^ longer than antenna, rather 

 long pubescent. Palj)! (pi. 14, fig. 10) comparatively 

 broad (the author formerly described it as slender), 

 nearly 2.5 times as long as wide, same width through- 

 out with rounded apex, rather strongly bristled. 



Thorax 1.4 times as long as wide, somewhat pur|)li.sh 

 black. Mesonotum (pi. 14, fig. 5) slightly whitish 

 tomentose and black pubescent, with a pair of very 

 fine black submedian longitudinal stripes from inner 

 corners of the humeral calli to roots of dorsocentral 

 bristles through inner ends of sutm-es; humeral calli 

 more or less brownish, with black erect hairs; noto- 

 pleural calli not conspicuous; scutellum triangidar with 

 rounded apex, nearly 1.6 times as wide as long, nearly 

 as tomentose and pubescent as mesonotum, disk flat 

 with lateral borders nearly perpendicidar, their basal 

 portions more or less brownish. Pleura (pi. 14, fig. 6) 

 strongly shining, not tomentose but very sparsely 

 pubescent, yellowish brown just below the wing-bases; 

 sternopleuron with short bristly hairs along ventral 

 margin; mesophragma and postnotum uniformly black, 

 slightly obscured by a whitish tomentiun. All bristles 

 black, rather long: inner scapulars a little weaker than 

 outer, slightly divergent; humerals situated at about the 

 middle, a little longer than presuturals; notopleurals 

 two, the anterior distinctly longer than the posterior, 

 which is distinctly shorter than presutural; dorso- 

 centrals behind the level of anterior supra-alars; 

 prescutellars slightly divergent, nearly on a Ime con- 

 necting inner posterior supra-alars; outer posterior 

 supra-alar strongly curved, as long as inner; scutellar 

 bristles two pairs, the apical pair nearh' parallel, 

 distinctly shorter than basal pair; mesopleural bristles 

 two, as long as pteropleural, which is directed postero- 

 dorsally, sternopleural directed upward and as long 

 as mesopleural. 



Abdomen (pi. 14, fig. 7) shorter than thorax, a little 

 wider than latter, shuung black, slightly yellowish-grey 

 tomentose, black pubescent, the erect haii-s on lateral 

 borders of second tergum short, posterior margins of 

 third and fourth terga with rather numerous fine bristly 

 hairs, the fifth tergum with two pau's of long bristly 

 hairs along apical margin; genitalia j-ellowish brown, 

 with rather long blackish dorsal appendages. 



Wmgs (pi. 14, fig. 1) longer than body, twice as long 

 as wide, with apex rather narrowly rounded; costal 

 vem reaching tip of m, costal spine comparatively 

 short, basal bristle conspicuously long; Ri bent at a 

 nearly right angle at apical portion; apical half of 



