70 MORPHOLOGY AND TAXONOMY OF ADULT MALES 



ridge, one small seta on the outer margin and a long apical seta which, on the fore trochanter, is 

 i -5-1 -o (average 1 7) times as long as width of trochanter. Femora of medium width (60-87 t^ 

 ratio width to length of hind femur being 1 : 4-7-5-5 (average 5-1) ; each with 25-43 f.s., 

 with 16-21 (average 18) h.s. on the fore and 10-16 on the middle and hind legs. Tibiae 34-49 \l 

 wide, the ratio width to length of hind tibia being 1 : 16-2-18-2 (average 171) ; each with 

 72-99 setae of which 17-29 are h.s. and 53-72 f.s. ; the latter, as on the other segments, very 

 long, about 4-5 times as long as width of tibia ; with a number of spurs near apex, apical spur 

 about the same size on all tibiae. Tarsi 29-38 y. wide, hind tarsus 6-2-8-9 (average 7-3) times 

 longer than wide ; each with 12-19 IS - an d 8-15 h.s. ; tarsal digitules subequal, longer than 

 claw. Claws of medium length, somewhat longer than width of tarsus ; slightly curved, with 

 small denticle near tip ; ungual digitules subequal, about as long as claw. 



Abdomen 800-1060 (average 982) \i long and 600-780 (average 681) \x wide. 



Segments I-VII : tergites on segments II— II I represented by a small sclerite on each side, and 

 on VII by a weak transverse plate ; sternites on segments V-VII represented by a weak 

 transverse plate. Caudal extension of segment VII small, somewhat pointed, not sclerotized. 

 Dorsal setae : h.s. only, sometimes one on each side on segment IV and usually so on V-VII. 

 Pleural setae consisting of h.s. only, which include dorsopleural setae : 1, 1-2 (average 1-2), 

 1-3 (average 1-7) and 3 on segments III-VI respectively, and ventropleural setae : usually 

 one on each of segments IV-VI. Segment VII with 4 h.s. Ventral setae : h.s. only, usually 

 one on each side on each of segments II-IV, and 3-5 on V-VII. 



Segment VIII with transverse tergite and sternite ; caudal extension forming a small, simple 

 lobe ; glandular pouch with 2 long setae, each with a small apical knob, the protruding part of 

 these setae i-i^ times as long as section within pouch. No IXth tergite observed. Ante-anal 

 setae : 2 long h.s. Posterior margin with 3 h.s. on each side. 



Genital segment. Penial sheath short, about \ total body length (ratio 1 : 5-26-6-20, average 

 5-81), 441-536 (average 492) (x long and 61-68 (average 65) jjl wide ; lateral sclerotizations not 

 joined anterior to anus ; length of basal rod about equal that of aedeagus, extending anteriorly 

 from base of aedeagus to apex of the basal membranous area ; apex of sheath without mem- 

 branous extension. The area from base of sheath to tip of aedeagus with 26-41 (average 34) 

 small setae ; a cluster of small sensilla occurring ventrally near apex of sheath. Aedeagus 

 short (length 137-171, average 162 u.), penial sheath and basisternum longer, ratios being 

 1 : 2-8-3-2 (average 3) and 1 : 1-81-2-44 (average 2-17) respectively. 



Material examined : 10 specimens, collected by N. S. Borchsenius on Ligustrum 

 sp. in China on 14.ix.54. 



Genus A sp. 

 (Text-figs. 20 and 21) 



A medium-sized, robust species with comparatively long antennae and moderately long legs ; 

 with numerous short, thick setae on the appendages but with only a few h.s. on the body itself. 

 When mounted, total body length 1630-1830 (average 1757) y. ; width at mesothorax 455-500 

 (average 477) \i. Wing expanse 3140-3220 (average 3172) [x. 



Head subconical in dorsal view ; rounded in lateral view, with anterodorsal bulge not pro- 

 nounced ; length from apex to pronotal ridge 213-236 (average 218) \i, width across genae 

 277-304 (average 286) [i. Median crest well sclerotized, especially anteriorly and around the 

 posterior margin ; central part polygonally reticulated ; with 7-10 (average 8-5) hair-like 

 dorsal head setae. Midcranial ridge dorsally absent ; ventrally narrow but well defined, 

 reaching postocular sclerite posteriorly, surrounding area sometimes weakly sclerotized near 

 ridge, but not reticulated. Genae large, sclerotized, not reticulated, without setae. Eyes : 

 four pairs ; dorsal and ventral pairs large, subequal ; lateral pairs smaller, subequal ; corneae 

 of dorsal eyes 21-23 (average 22) \x in diameter and 6-8-7-8 (average 7-2) times as much apart ; 



