82 



UXITED STATKS NATIONAL MUSEUM BULLETIN 2 63 



beyond r-ni; 2Mo witli one roiiml and lliree equidistant 

 somewhat oblons; indentations, the fdi-iner far I'luin 

 anterobasal corner of cell and near ni; ('u willi tliree 

 round spots and tlu'ee soniewliat roundetl indentations, 

 tlie lirst just above middle of ('o + 2A, the second just 

 below middle of IM2, and tlie tliird very near the 

 second, first indentation just beyond tip of V\\ more 

 or less triangular, the second just before middle of 

 apex, and the tliird near tip of cell almost always 

 smaller than otiiers; antd lobes smoky, with two to 

 four rounded spots below second anal vein in one row. 

 no spot above it. HaUeres light reddish yellow, knob 

 sometimes darkened; squamulae liglit yellowish grey, 

 margins l)lackisli. 



Legs light reddish yellow, blackish pubescent. Fore- 

 leg.s (pi. 30, fig. 11) conspicuously shorter than others; 

 femur distinctly longer than tibia, exlernoventral mar- 

 gin with three or four very long black bristly hau's, 

 ])ubescence on externodorsal surface longer than that 

 remaining; tibia cons])icuously shorter than tarsus, ven- 

 tral apex with very fine yellowish brushlike setae; first 

 tarsal segment distinctly longer than the four follow- 

 ing segments together, internoventral surface with short 

 3^ellowish brusldike bristles, ventral apex with two black 

 minute bristles, second to fourth segments with one 

 pair of black minute bristles at ventral apex. Midleg 

 (pi. 30, fig. 12) a little longer tlian liindleg; femur 

 slightly shorter than tibia, externoventral margin with 

 one row of lilack short bristly hairs on apical half; 

 tibia distinctly longer than tai'sus, black apical spur 

 comjiaratively long, in addition one sliort black bristle 

 on external a])ex; first tarsal segment consi)icuousty 

 longer tluin (lie four following segments together, 

 sliglitly longer than haK the length of tibia, pubescence 

 and bristles as in front tarsus. Hindleg (pi. :U), fig. 13) 

 stronger than others; femur slightly longer than tibia, 

 ventral surface with two rows of black short setae; 

 tibia shorter than tarsus, curved outward slightly near 

 base, jnibescence on dorsal margins longer than that 

 remaining; first tarsal segment conspicuously longer 

 than half the length of tibia, longer than the four 

 following segments together, gradually but slightly 

 narrowed a])ically, pubescence and bristles somewliat 

 as on midtarsus. 



Length: Body 4.5-5 mm, wing 5-5.1 nun. 



Types.-— Holotype, cf, USNM 69381, Ishigaki Is., 

 Feb. 24; allotype, Mt. Ai'isan, Formosa, Oct. 10, 1912 

 (NIAS); i)aratypes, 2 cf, Ishigaki Is., Feb. 24 (BMH); 

 cT, Amami-Oshima Is., May 9 (NIAS), cf , Mt. Arisan, 

 Formosa, Oct. 10, 1912 (NIAS). 



Genus Ensina Robineau-Desvoidy 



Ensina Robinoad-Desvoidy, 1830, p. T.)!. — Ilondcl, 1927, p. 

 171.— Shir.aki, l',)33, p. 460. 



ICnsina soiiclii (Liiiiie) 



Plate 31 



Musca sonchi Linnd, 1767, p. 998. 

 Trypeta ubsoleta Meigen, 1826, p. 345. 

 Ensina ckrysanlhemi Robineau-Desvoidy, 1830, p. 751. 

 Ensina herbarum Robineau-Desvoidy, 1830, p. 752. 

 Ensina prnlensis Robineau-Desvoidy, 1830, p. 752. 

 Ensina linariae Robineau-Desvoidy, 1830, p. 753. 

 Ensina scorzonerae Robineau-Desvoidy, 1830, p. 753. 

 Ensina rloronici Robineau-Desvoidy, 1830, p. 753. 

 Tcphritis astcris Haliday, 1838, p. 186. 



Ensina lacleipennis Hendel, 1915, p. 464. — Sliiraki (in pari), 

 1933, p. 465. 



A light greenish-yellow species of \erv >niall size 

 witli nearly wholly hyaline wings. 



Male. — Head a little wider than thorax, nearly 1.3 

 times as wide as long, nearly 1.26 times as wide as high, 

 tlistinctly narrowed forward, Frons (pi. 31, fig. 3) 1.6 

 times as wide as one eye, sliglitly narrowed forward, 

 lateral margins straight, flat, orange yellow; orbits 

 comparatively broad, consjiicuously whitish tomentose, 

 with few white sparse pubescence; vertical calli very 

 short, more or less fused with orljits, distinctly covered 

 by a wiiitish tomentuni; liirnile iiioilerate in size, 

 more or less concave, ligiit yelk)wish, ol)scured by 

 whitish tomentum; ocellar triangle very large, orange 

 yellow, with a black spot between ocelli, whitish 

 tomentose aiul very sparsely ])ubescent, vertical 

 transverse carina well defined, waxy yellowisli. Face 

 (j)!. 31, fig. 4) liglit yellow, whitish tomentose, very 

 short, consi)icuously shorter than wide, nearly parallel- 

 sided, moderately hollowed, with broad antemial 

 grooves and distinct median longitudinal carina; (ut)its 

 conijiaratively narrow, inner margins nioie or less 

 reddish brown. Back of head (])1. 31, fig. 2) moderately 

 swollen, upper jiortion flat, light greenish yellow, with 

 a black large trapezoidal patch on upper ])ortion, 

 whitish tomentose, sparsely light yellowish pubescent; 

 cheeks very luirrow, genal groove brownish, vibrissal 

 edges with sliort pale brownish bristles. Eye in jirofile 

 moderately oblique, oval, upper angle distinctly nar- 

 rowed, in front view inner margin slightly convex 

 with inner angle very close to oral margin. All bristles 

 brown, except ])ost verticals, inner occi|)itals. and 

 bristles of occipital rows, which are yellowisli wiiite. 

 Ocellars divergent, cons|)icnously longer than superior 

 fronto-orbitals and slightly longer than inferior front o- 

 orbitals; front o-orl)itals 1:3, the inferiors inwardly 

 directed l)ut not crossed; inner verticals con\ergent, 

 longest of all head bristles, slightly longer tlian outer 

 verticals, which are slightly longer than occllais; 

 postvcrticals i)arallel, slightlj- shorter than superior 

 fronto-orbital; occipitals one pair, very short, as long 



