34 



UNCTED STATES NATIONAL MUSEUM BULLETIN 2 63 



by four veiy fine l)iistles; p(ei<)])lcural luul sleino- 

 I)lour!il bristles rather sliort, tlirctted upward; pro- 

 pleurals comijosed of one row of some six fine bristles. 



Abdomen (pi. 12, fiir. 8) (witliout ovipositor) as long- 

 as thorax, slightly broader, shining brownish black, 

 covered with black s])arse ])ubescence wliich becomes 

 longer at lateral borders; fifth tergum conspicuously 

 longer than one following, witli a yellowish-bri)wn 

 posterior marginal band which is triangularly broadened 

 anteriorlj- in the middle; sixth tergum nearly half as 

 long as one [)receding, with similar colored narrow 

 bant! ahmg ]iosteri(ir margin; basal segment of ovi- 

 positor strongly shining, ahnosL black, nucrosco])ically 

 pubescent, shorter than wide, nu)derately Hatteued. 

 second segment ycllowisli. Venter blackish, with pos- 

 terior half of each steriuim and [ileural membranes 

 dirty yellow. 



Wings (pi. 12, fig. 9) utirmal in sliape, slightly longer 

 than body; costal vein extending to the end of m, 

 well bristled but rather inconspicuous from end of 

 R24.3 to m, the costal s|)ine distinct but not conspic- 

 uouslv long; R^+j very sligiitly curved, very iiTeg- 

 ularly and sparsely bristled throughout; K, well bris- 

 tled as in the costa; m nearly i)arallel witli R4+.r, at 

 apical section; r-m straight, parallel with m-cu ; 

 pterostigma a little longer than half the length of 

 second costal cell; anal cell shorter than M, the apical 

 margin angularly concave, M'ith sharply ])ointed in- 

 ferior angle. The blackish-brown pattern of wings 

 similar to Carpophfhorella as follows: costal band very 

 broafl from anal cell to apical border of Rs along costa, 

 with light brownish second costal cell, a somewhat 

 hyaline spot just beyond pterostigma, a veiy small 

 hyaline dot at a[)ex of R24.3 and a light colored straight, 

 oblique line near base, its posterior margin extendhig 

 from be3^ond inferior angle of anal cell to middle of 

 apical section of R^+.i, straight through ])osterior end 

 of r-m and nearly right-angularly bent ])osteriorly to 

 end of cvi; the second band com|)osed of subapical and 

 median cross bands conspicuous, tiie former extending 

 from just beyoml middle of ajncal section of R4^5 

 straight to a point just before middle of mouth of 2M2, 

 the latter paler, on m-cu cons|)icuously broadened 

 behind to entire apex of Cu and narrowly connecting 

 with the costal band. Halteres light yellow, with stalk 

 whitish. 



Legs light j'ellow, rather sparsely blackish pubescent. 

 Forelegs (pi. 12, fig. 10) distinctly shorter than posterior 

 pairs; femur distinctly longer than tibia, two irregular 

 rows of black long bristly hairs on externodorsal surface 

 and on apical two-thirds of the externoventral margin 

 one row of black conspicuously long ones becoming 



very short aiul line at apical jjortion ; tibiae without 

 any special bristles. Midlegs (pi. 12, fig. 12) longest; 

 i'eunu- slightly longer tiian tibia, three fine l)lack bristly 

 hairs on apical |)ortion of externoventral margin; 

 tibiae with oidy oiu> black ai)ical spur whicli is twice 

 as long as apical widlh; tarsi 5/6 as long as tibia, llie 

 first segnu'iil hardly half as long as tiliia or conspicu- 

 ously longer than the four following segments, the 

 iutei-noventi'ai surface with I'elatixely short yellowisii 

 l)rushlike bristly iiairs, tiie four apical segments with 

 black fine bristly hairs on dorsal apex of eacli segment, 

 claws yellowish willi apices black. Hindleg (])1. 12, fig. 

 11) nearly as long as midleg, somewhat thicker tium 

 latter; femora witii a ratlier long j)ubescence on the 

 external surface; near dorsal aiiex one pair of con- 

 spicuous l)ristly luurs and on the externoventral margin 

 an irregidar row of bristly iuiirs of which some apical 

 ones are distinctly longer tiian others; tibiae nearly as 

 long as femur, witii one row of some six l)lack bristly 

 hairs abcuit the mitldle third of externodorsal margin; 

 tarsi as in midleg. 



Lengtli: Body (Witliout ovipositor) 3.4 mm, wing 

 3.8 nun. 



HoLOTYPE. — One female, collected by Afr. A. Malsii- 

 moto, Okinawa fs., Apr. (i, 1953 (XIAS). 



Chenacidiella, new genus 



Closely allied to Acidiella Hendel, but at once dis- 

 tinguished from it by the dorsocentral bristles, which 

 are situated posteiior to a line connecting the anterior 

 su])ra-alar l>ristles: the mesopleural bristles two; the 

 inferior prolongation of anal cell very long, >iniilai' (o 

 the subfamily I>acui<i(\ and t)ther characters, 



(ienotype; Aciduila jnirpuidatta Chen. 



CtivnucidielUi fnir/mrriseta (Cljeii) 



Pl.\te 13 



AriiliiUa purpureiacta Chrii, 1(148, p. 11.'), fig. l.'i. 



A rather small bi-ownisji species, distinguished by 

 by the wing pattern. 



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

 as wide as long, 1.3 times as high as long. Frons (pi. 

 13, fig. 2) almost parallel-sided, nearly 1.5 times as 

 long as wide, light brownish yellow, whitish tomentose, 

 with brown erect pubescence about the middle: vertical 

 calli dull sliining, extending to just behind the middle 

 of frons; lunule shining brown: ocellar triangle small, 

 black, just behind which there is a fine but distinct 

 transverse carina reaching to roots of inner vertical 

 bristles; fronto-orbits not traceable. Face (pi. 13, fig. 3) 

 comparatively suuill. di-<tin<|]y sliorter tliaii frons, 



