On new African Phlehotomt'c Diptera. i?53 



XXXVI. — New African Pldebotomic Diptera in the British 

 Museum [Natural Histori/). — Part VIII. Tiibaiiidic 

 (^continued). By Erxest E. Austen *. 



(l*iiblisheil by permission of the Trustees of the British Museum.) 



Pangoxiin^. 

 Genus Dokcalo;mus, Austen. 

 Dorcahiinus icoosnami, sp. n. 



$ . — Length (G specimens) 12"6 to 13*75 mm. ; width of 

 Iiead 425 to 4"75 mm.; width of front at vertex 075 mm. 

 to just under 1 mm. ; distance from anterior margin of 

 epistoma to anterior margin of eye (measured in a direction 

 parallel to dorsal surface of base of labrum) 1*2 to 1"25 mm. ; 

 length of proboscis (beyond anterior margin of epistoma) 

 3"5 to 4"8 mm. ; length of wing 11 to 12 mm. ; greatest 

 width of wing 4 to 4'G mm. 



Closely allied to D. fodiens, Austen, but distinguishable from 

 this species, as also from D. compactus, Austen, by the ochra- 

 ceuus t {tawny-ochraceous or tawny) area on the dorsum of the 

 abdomen, beyond the first segment, being confined to the second 

 segment instead of also including the third, and by the ventral 

 surface of the third segment having a dark transverse band 

 [usually more or less interrupted in the middle) ; agreeing with 

 D. compactus and differing from D. fodiens in the absence of 

 a tuft of black hair on the mesopleiinB. — Face short ; dorsum 

 of thora.i dull olive [yellowish-olive or greyish-olive) pollinose 

 [ground-colour black), clothed with fine, erect, silky, Naples- 

 yellow or pale straw-yellow hair, mid-ed with fine black hairs ; 

 first abdominal segment orange-buff, dorsum of second segment 

 with a median black spot, dorsum of third to sixth segments 

 inclusive shining black except their hind borders, which are 

 greyish pollinose and clothed with silvery-ivhite, ochre-yellow, 

 ur orange-ochraceoiis hair ; wings ivith a distinct luteous tinge, 

 though more hyaline than in D. compactus or D. fodiens ; 

 legs as in former species, though tips of tarsi usually broivn or 

 brownish. 



Head light grey pollinose ; upper half oi front, except very 

 narrow margin on each side, blackish, surrounding in median 



* See Aim. .t Mag. Nat. Hist. .ser. 8, vol. vi. p. 337 (1910). 



t For names and illustrations of colours, see Kidgway, * A Nomen- 

 clature of Colors for Naturalists ' (Boston : Little, Brown, and Company, 

 1886). 



