42 



irXlTED STATES NATIONAL MUSEUM BULLETIN 263 



what sparse, the second to fourth sej;meii(s ahiiost 

 always witli two bh\ck spmelilve bristles on ventral 

 apex. IliiuUet!; (pi. 15, fig. 13): femur a little longer 

 than tibia, near dorsal apex witli one pair of black 

 long l)ristly iiairs, ventral margins with more or less 

 distinct bristly hairs; tibia as long as tarsus, externo- 

 dorsal surface witii one row of at least six black bristly 

 liairs; the first tarsal segment distinctly longer tlian 

 the four following segments together, pubescence cm 

 dorsal svirface comjjaratively long, brushlike bristles 

 on internoventral surface sparse and long. 



Length: Body 3.8-4 mm, wing 3-3.4 mm. 



Female. — Quite shnilar to male (pi. 15, fig. 7). 

 Third antennal segment more or less narrowed toward 

 apex; sixth abdominal ferguni a little shorter than 

 fifth, wiili lliiee |)airs of black long margmal bristles; 

 basal segment of o\i[)osiler sinning black, nearly 1/2 

 as long as basal widtii, fhit, with distinct lateral margins, 

 posterior curner willi one long liair. 



Length: Body 4-4.2 nun, wing 3.5-4 nnn. 



Material examined. — Ishigaki Is.: 2 9, January 

 1953, 9 cf, February 1953; Okinawa Is.: 9, June 1953, 

 4 cf, Novend)er 1953. 



DisTRinuTioN. — Formosa, Ryukyu Islands. 



Remakk.s. — Very near to Euleia cacdo Han-is but 

 easily distinguished from it by tiic blackish costal cells, 

 the conspicuously simrl pterostigma, and ntliers. 



IlrmlcliiKi iiiiiresci'ns, lu-w species 



Pl.\te 16 



Rather large black species, with the basal half of 

 wings blackish except the alulae and the anal lobe. 

 Near Anomoia alboscutellatus Wulp, but easily dis- 

 tinguished b\' the antenna, which has no median bristle 

 on the second segment and a comparatively long third 

 segment, the ^\•ings are brownish at the base, the dark 

 scutellum, and many other chai-acters. 



Female. — Head as wide as thorax, 1.8 times as 

 wide as long, or 1.1 times as high as long, light yellowish 

 brown. Frons (\A. 16, fig. 3) distinctly mirrower than 

 eye, very slightly mirrowed anteriorly, with straight 

 lateral margins, more or less elevated above ej'es, very 

 slightly tomentose, with a blackish, sparse, erect 

 pubescence on almost entire surface; vertical calli 

 short, nearly 1/3 as long as frons, hardly shining; 

 lumile rather conspicuous, yellow, margined with a 

 brow^i tint; ocellar triangle comparatively small, 

 blackish, a short transverse carina not extending to 

 inner verticals. Face (pi. 16, fig. 4) nearly 2/3 as long 

 as inferior width, with more or less sinuate lateral 

 margins, nearly flat and straight, somewhat brownish. 



greyish tomentose, with disliiict hnl shallow antennal 

 grooves attaining oral margin, with distincl \ii>rissal 

 margins with many very short, irregidarly directed, 

 blackish bristly hairs; orbits narrow, slightly widened 

 below, their outer margins i-athcr dee])ly sulcate, 

 l)ru\\n, conspicuously broadened at lower angle of 

 eye; epistoma distinct, somewhat ])aler. Back of head 

 (pi. 16, fig. 2) moderately swollen, upper portion hardly 

 hollowed, broadly brownish around occijjital foramen; 

 cheeks low, with distinct genal groove, with some 

 blackish pubescence. Eyes comi)aratively large, in 

 profile somewhat semicu'cular, posterior margin nearly 

 straight, broader than half the length, inferior angle 

 broadly rounded, l>r()adest about the middle, quite 

 l)are. All bristles black: frt)nto-orbitals 2:3, the 

 superior strong, the lower pair directed slightly out- 

 ward and distuictly posteriorly, up])er pair parallel 

 and strongly bent posteriorly, the inferior longer than 

 superior, directed anteriorly and crossed; inner ver- 

 ticals strongest, longest and parallel, outer \ertical 

 longer than superior fronto-orbital, behind and be- 

 tween inner and outer verticals a short biistle (oc- 

 cipital); ocellar bristles weak, nearly ])arallel; post- 

 verticals nearly parallel, longer than ocellars; genal 

 bristle distinct. Antennae (])1. 16, fig. 8) inserted nearly 

 at middle of eye, conspicvu)usly shorter than face, 

 ochraceous; second segment nearly 1/3 as long as third, 

 without distinct median bristle; third segment nearly 

 three times as long as wide, narrowed toward the 

 round apex, dorsal margin distinctly minute pubescent; 

 arista comparatively long, plumosely j)ubescent. black 

 with base light yellow. Palpi (pi. 16, fig. 9) light yellow , 

 black bristled, shf)rt and broad, nearly the same witlth 

 throughout, with round apex. 



Thorax as long as abdomen, slightly narrower than 

 latter, black, longer than high. Mesonotum (pi. 16, 

 fig. 5) a little longer than wide, yellowish-grey to- 

 mentose, covered with a black, rather depressed, short 

 pul)escence, without a liglit streak; humeral calli light 

 reddish yellow, shining, rather small, with blackish 

 erect jjubescence; notopleural calli not conspicuous, 

 upper corners more or less castaneous; scutellum com- 

 paratively large, a little longer than half the basal 

 width, disk flat, slightly yellowish-grey tomentose and 

 very fine pubescent, lateral borders nearly iieipendic- 

 ular, with sharj) dorsal margins. Pleura (pi. 16, fig. 7) 

 distinctly greyish tomentose, covered with a blackish 

 rather sparse erect pubescence, prothorax and anterior 

 stigma light reddish yellow, sternopleuron with nu- 

 merous black bristly hairs along ventral surface. All 

 bristles black anil long: inner sca])ulars more or less 

 divergent, a little longer than outers, dh'ected slightly 

 ])ostcrioiiy; humeral biistle at about middle oi' callus. 



