
606 RECORDS OF THE S.A. MUSEUM 
The present species is evidently allied to Trentepohlia (Mongoma) austra- 
liensis (Skuse), of north-eastern Australia, and to 7’. (M.) subpennata Alexander, 
of the Papuan subregion. The former has the tips of the femora and the bases 
of the tibiae extensively snowy white; the latter differs in the venation, as the 
length of vein R344 and in the even more strongly dilated apices of the middle 
tibiae. 
TRENTEPOHLIA (ANCHIMONGOMA) ANGUSTICINCTA sp. nov. 
General coloration of mesonotal praescutum, scutal lobes and pleura dark 
brown, the scutellum abruptly yellow; antennae black throughout; tibiae white, 
with a narrow black ring before midlength, on the posterior tibiae only a little 
more than one-half as wide as the white base; wings whitish hyaline, unpatterned ; 
cell R; a little exceeding its petiole. 
9 Length, about 7-5 mm.; wing, about 7 mm. 
Rostrum light brown; palpi black. Antennae black: flagellar segments 
cylindrical, with verticils that are subequal to or a trifle longer than the segments. 
Head above dark grey ; anterior vertex reduced to a linear strip. 
Pronotum concealed. Mesonotal praeseutum and scutal lobes dark brown, 
contrasting with the yellow central portion of the seutum and the scutellum; 
postnotum weakly infuscated, sparsely pruinose. Pleura dark brown, sparsely 
pruinose, the posterior pleurites paler. Halteres with stem obscure yellow, knob 
infuscated. Legs with the coxae more or less infuscated, the bases restrictedly 
brightened; trochanters obscure yellow; femora dark brown, the bases narrowly 
white; tibiae white, with a relatively narrow black ring before midlength, 
broader on the middle legs where it is subequal to the white base, narrower on 
the posterior tibiae, where it is only a little more than one-half the white base 
(fore legs broken) ; remainder of legs white, the terminal two tarsal segments 
weakly darkened. Wings whitish hyaline, unpatterned, veins brown. Venation: 
As in the subgenus; 224344 about two and one-half times Re, the latter a little 
longer than Ry+.; cell Rs a little exceeding its petiole; m—cwu at fork of M; veins 
Cu, and ist A narrowly separated at margin, the distance about one-half the 
basal section of vein My+.. 
Abdomen filled with eggs and evidently discoloured; dark brown, sparsely 
pruinose ; ovipositor with the genital shield and valves reddish horn colour. 
Holotype, @, Torricelli Mountains, altitude 200-1,000 feet, January, 1939 
(Cheesman). 
The present fly is closest to the Oriental Trentepohlia (Anchimongoma) 
apoicola Alexander (niveitpes Edwards, preocc.) which differs chiefly in the darker 
wings and, especially, in the great increase in black colour on the tibiae. 
