I9I3] 



M. Bezzi : Indian Trypaneids {Fruit-Flies). 



4 (I)- 



5 (48). 



6 (37). 



7 (8)- 



8 



(7)- 



9 



(12). 



10 



(II). 



II 



(10). 



12 



(9)- 



13 {16). 



14 (15)- 



15 (14)- 



16 (13). 



17 (18). 



18 (17)- 



19 (22). 



a (6) Wings not banded .. ,. .. Chaetodacus, n.. g^n. 



b (a) Wings banded . . , . . , . . Bactrocera, G.-M. 



Sternopleural bristle always present;' hm., prst. and dc. very 

 rarely wanting; auxiliary vein well distinct; second basal 

 cell of usual size. 



Occiput with the usual row of black bristles, or with bristles only 

 on the upper side; if rarely the occipital bristles are yellow, 

 they are thin and pointed ; thorax usually with dark dorsal 

 pubescence; arista mostly plumose or pubescent; proboscis 

 not elongated; third longitudinal vein usually bristly through- 

 out its whole length. 

 Third longitudinal vein bristly throughout its whole length, or 

 at least from the base to the small cross vein. 



NoÄw.; middle tibiae with 2 apical spurs; dc. and prsc. present; 

 no oc; or. 2. 2; occiput strongly swollen below; arista plu- 

 mose; body black, marked with white; wings with brown 

 rivulet-pattern .. .. .. .. A noplomus, n. gen. 



Hm. always present. 



Frons flattened, thinly pilose, longer than the face; antennae 

 inserted below the middle of the eyes ; no oc. ; arista plumose 

 only on the upper side ; wings without entire cross-bands.'^ 



No lower or. ; colouring of body yellow ; wings with yellowish 



markings toward the fore border . . . . . . Chaetellipsis, n. gen. 



Lower or. present; colouring of body tawny and shining black; 



wings with brown fore border . . . , . . PoecilUs, n. gen. 



Frons not flattened, as long as, or longer than the face, not thinly 

 pilose and bare towards the middle ; antennae inserted on or 

 above the middle of the eyes ; arista usually plumose on both 

 sides. 



Second longitudinal vein wavy. 



Second longitudinal vein straight at base and wavy at end ; head 

 very broad; body short, of brown colouring; wings brownish- 

 black with hyaline spots and indentations; costa ciliated, and 

 ist, 3rd and 5th veins bristly . . . . . . Acanthoneura, Macq. 



Second vein wavy at base and straight at end ; head not dilated; 

 body elongate, of light yellow colouring, with black dots on 

 thorax and scutellum : wings hyaline, with three yellow longi- 

 tudinal bands; costa not ciliated and fifth vein bare . . X author rhachis, n. gen. 



Second vein straight throughout its whole length. 



Prst. and dc. wanting; no oc. ; or. i. i.; scutellum with four bris- 

 tles; third antennal joint rounded at the tip; arista plumose; 

 body brown and dark yellow ; wings with hyaline indentations 

 and spots . . . . . . . . . . Ptilona, Wulp. 



Prst. and dc. always present. 



Scutellum flattened, with six strong bristles, rarely the middle 



1 Wanting in Henicoptera, according to Osten-Sacken, and therefore this genus belongs probably 

 to the Dacinae. 



^ Ceratttis s. sir. shows a similar shape of head, but the arista is only shortly pubescent on the 

 upper side. 



