20 R. W. CROSSKEY 



in the Oriental Region but to judge from limited material are also mainly northerly, 

 the subgenus Hyalomya Robineau-Desvoidy for instance occurring in Pakistan 

 and northern India but not further eastwards and southwards. A species of Alo- 

 phora s.str. has, however, been described from Laos (Draber-Monko, 1964) and an 

 unidentifiable specimen of Ectophasia has been seen from Ceylon (BMNH). 



A few hosts are known for Oriental Phasiini, as shown in the host list in Part III. 



Key to Oriental Genera of PHASIINI 



Wing with cell i? 5 closed and petiolate (Text-figs 84, 85, 87, 89) .... 2 



Wing with cell R b open to the margin ........ 6 



Abdominal tergites fused and the sutures between them almost completely obliterated. 

 Abdomen usually subglobular. Femora armed with comb-like rows of short black 

 spinules on the apical halves of the av and pv surfaces (sometimes only very few 

 such spinules on the hind femora) ........ 3 



Abdominal tergites not fused, with normal conspicuous sutures between them. 

 Abdomen of varied shape but always obviously longer than broad and often 

 flattened. Femora with or without ventral spinules ..... 4 



Petiole short (subequal in length to r-m), meeting the costa basad of the wing-tip and 

 angled forwards in relation to the preceding section of R i + i (Text-fig. 84). 

 Antennae long, reaching or nearly reaching the epistomal margin, the first segment 

 strongly projecting (Text-fig. 20). Frons of both sexes very wide (vertex at least 

 two-thirds as wide as an eye seen from above). Scutellum rugose, short and broad, 

 with the posterior pair of marginal setae very widely separated (distance between 

 their bases very much greater than that between a posterior seta and its corres- 

 ponding basal seta). Frons very wide, vertex of both sexes seen from above very 

 much more than half as wide as an eye. Abdomen shining yellow to reddish 

 orange with median black marks (these in form of small rounded spots in q\ and 

 large irregular areas coalescing into a broad median vitta in $). Abdominal surface 

 conspicuously punctate ....... G YMNOSOMA Meigen 



Petiole very long (about three times as long as r-m), ending exactly in the wing-tip 

 and forming a straight continuation of R i+5 (Text-fig. 85). Antennae short, 

 falling short of the epistomal margin by a distance about as great as the length of 

 the third segment, the first segment not projecting (Text-fig. 21). Frons of both 

 sexes narrower (vertex not more than half as wide as an eye seen from above). 

 Scutellum not rugose, slightly pointed, with the posterior pair of marginal setae 

 (the apicals) inserted close together (distance between their bases not greater than, 

 and usually much smaller than, that between a posterior seta and its corresponding 

 basal seta). Abdomen shining unicolorous yellow-orange to orange-red. Ab- 

 dominal surface normal, not appearing punctate. PERIGYMNOSOMA Villeneuve 



Femora armed with strong spinules or setae on much of their lower surface. Post ia 

 seta present. Eyes occupying almost the whole side of the head (similar to 

 Perigymnosoma, Text-fig. 21), the gena reduced to a narrow strip that is not as 

 wide as the third antennal segment. Vibrissae moderately strong, usually meeting 

 or crossing at the apices. Parafacials reduced to a narrow strip that is nearly 

 invisible in profile (similar to Perigymnosoma, Text-fig. 21). Pteropleural seta 

 present, conspicuously differentiated from pteropleural hairing. 9 ovipositor 

 forming a short straight tube-like structure that is invisible when the abdomen is 

 seen in profile ALOPHOROPHASIA Townsend 



Femora with vestiture of lower surface almost entirely hair-like (sometimes a few 

 sparse weak spinules on the pv surface of the fore femur in Besserioides). Post ia 

 seta absent. Eyes relatively smaller, the gena almost as wide as or wider than the 



