Plecia — Hardy 
189 
3 6. Lobes of ninth tergum widely divergent 
at apices. The claspers extend well be- 
yond apices of lobes on hind margin of 
sternum. Both lobes on posterior margin 
of sternum about equal in size, neither is 
one-half as long as clasper. (Bougain- 
ville, Solomon Islands) .gurneyi Hardy 
Lobes of ninth tergum not divergent. 
Claspers not extending to apices of rod- 
like lobes. Upper lobe on each side of 
sternum as long as clasper. (Solomon 
Islands) laffooni Hardy 
37. Ninth sternum with a large semimem - 
branous extension on hind margin (pos- 
terior median portion), this is longer 
than the remainder of segment and two- 
thirds as long as claspers. A very strong 
pair of accessory aedeagal structures ex- 
tend well beyond claspers. Posterior lat- 
eral margins of sternum with a pair of 
small lobes. (Solomon Islands) 
manni Hardy 
Not as above 38 
38. Either the ninth sternum or tergum forci- 
pate or produced at apices into slender 
pointed lobes, about equal in length to 
remainder of segment and often curved 
inwardly 39 
Ninth sternum or tergum without forci- 
pate lobes ; lobes not one-half the length 
of segment and tergum rounded at apices 
44 
39- Ninth tergum forcipate, sternum not. 40 
Ninth sternum forcipate, tergum not. 42 
40. Front portion of mesonotum with a large 
black spot in middle. Posterior lateral 
margins of ninth sternum produced into 
pointed lobes (Fig. 4a). (Burma) 
burmensis n.sp. 
Mesonotum entirely rufous. Posterior 
lateral margins of sternum not produced 
41 
41. Claspers terminating in a slender spine- 
like lobe on inner apex. Posterior median 
margin of sternum developed into a lobe 
which extends beyond posterior lateral 
margins of segment (Fig. 12a). (Malay 
Peninsula) forhcula Edwards 
Claspers obliquely truncate at apices; no 
such lobe. No median lobe developed on 
sternum (Fig. lib). (Indonesia). 
forcipata Osten Sacken 
42. No submedian lobes on hind margin of 
ninth sternum. Claspers pointed on outer 
apices (Fig. 18^). Ninth tergum nearly 
quadrate in shape, truncate at apices 
(Fig. 18^). (Peninsular Siam) 
malayaensis Hardy 
Narrow submedian lobes present along 
sides of each clasper, claspers not pointed 
on inner side (Fig. 14a). Ninth tergum 
subacutely pointed at apices 43 
43. Each clasper produced into a sharp 
pointed beaklike subapical lobe on inner 
side (Fig. 14^). (New Britain) 
fumidula diversa n. sub. sp. 
Claspers rather triangular, without a beak- 
like point (Fig. 15^). (New Guinea). . . 
inconspicua Hardy 
44. Ninth sternum with two or three well- 
developed lobes on posterior median 
margin. No lateral lobes 43 
Ninth sternum without conspicuous me- 
dian lobes 46 
45. Ninth sternum with a pair of lobes on 
posterior median margin separated by a 
U-shaped concavity, these extend be- 
yond apices of claspers. (Borneo) 
borneensis Edwards 
Ninth sternum with a pair of rather small 
lobes, not extending half as long as 
claspers; a large flat-topped projection 
separates the two lobes. Claspers dentate 
apically (Fig. 6a). (Australia, Tasmania) 
dimidiata Macquart 
