15° 



MORPHOLOGY AND TAXONOMY OF ADULT MALES 



VII each with a ventral bristle. Segment VIII with 3 preapical bristles, 2 capitate subapical 

 sensory setae and 1 apical hair-like seta. 



Thorax : Length from postoccipital ridge to first abdominal segment 418-441 (433)^. 

 Prothorax : Pronotal ridges usually weak or atrophied but sometimes well developed ; pronotal 

 sclerites small. Post-tergites comparatively large. Dorsal margin of the proepisternum ridge- 

 like. Prosternum small, triangular, 9-15 (12) jjl long and 61-70 (65) u. wide ; prosiernal ridge 

 absent, and its position only marked by sclerotization. Prothoracic setae on each side : Medial 

 pronotal setae 3-4 (3-3) ; lateral pronotal setae 7-9 (8-3) ; post-tergital setae 3-4 (3-8) ; ante- 

 spiracular dorsal setae 5-7 (5-8). Antespiracular ventral setae 3-5 (3-4) ; prosiernal setae 2-4 

 (2-8). Prothoracic disc pores on one side : Medial pronotal pores 3-4 (3-8) ; lateral pronotal 

 pores 4-7 (5-3) ; post-tergital pores absent ; antespiracular disc pores 3-4 (3-3). Prosiernal 

 pores 2-3 (2-2). 



Mesothorax : Largely reduced ; mesotergum represented by a weakly sclerotized sclerite. 

 Mesopleural ridge atrophied ; mesepisternum distinct and mesepimeron small. Basisternum 

 weakly sclerotized and hard to detect ; marginal and precoxal ridges absent ; furca vestigial. 

 Mesothoracic spiracle 18-21 (20) \i wide at opening, with 49-55 (52) pt long supporting bar. 

 Mesothoracic setae on each side : Dorsal setae 5-7 (6-2) forming on both sides a transverse band ; 

 pleural setae 4-5 (4-5) ; postmesostigmatal setae 9-13 (11-3) behind each spiracle. Basisternal 

 setae 3-5 (4-2). Mesothoracic pores : Mesospiracular pores 1-2 (1-5). 



Metathorax : Metapleural ridge dorsally reduced ; precoxal ridge absent. Metasternal 

 apophyses vestigial. Melathoracic spiracle similar to the mesothoracic. Metathoracic setae 

 on each side : Dorsal setae 5-7 (5-8) ; metapleural setae 5-9 (6-8) ; anterior metasternal setae 

 2_ 4 (3 '3) '< posterior metasternal setae always 2. Metathoracic pores on each side : Dorsal 

 pores 1-2 (i-8) ; metaspiracular pores 5-8 (6-2) ; anterior metasternal pores 2-4 (3-1) and 

 posterior metasternal pores 1-2 (1-3). 



Legs : Comparatively short ; the ratio length of hind leg to total body length 1 : 2-3-2-4 

 (2-32). Coxa about 46 and trochanter about 24^ wide. Femur about ^j\l wide ; that of the 

 hind leg longest and those of the front and middle legs of about the same length ; the ratio 

 width to length of the hind femur 1 : 3-8-4-0 (3-9). Tibia about 20\l wide ; with 2 apical 

 spurs (smaller spines absent) ; the femur of fore leg always longer than the tibia, the ratio 

 being 1-2-1-3 ( I-21 ) : *■ Tarsus about i8[x wide ; tarsal digitules apically knobbed. Claw 

 gradually tapering to a pointed end ; ungual digitules fine. The following table shows the 

 lengths of the leg segments (in microns) and the number of setae on each : 







Fore leg 



Middle leg 



Hind leg 





length 



37-43 (40) 



37-43 (40) 



40-46 (43) 



Coxa 



f.s. 



i-3 (i-8) 



i-3 (2-1) 



1-2 (1-5) 





h.s. 



4-7 (5-6) 



5-8 (6-8) 



5-8 (7-i) 





length 



58-61 (60) 



58-61 (60) 



61-64 (63) 



Trochanter 



f.s. 



0-1 (o-8) 



0-1 (0-9) 



1-2 (i-3) 





h.s. 



3-5 (4-i) 



3-5 (3-8) 



4-6 (4-8) 





length 



134-140 (137) 



134-140 (137) 



140-146 (143) 



Femur 



f.s. 



2-3 (2-8) 



i-3 (2-6) 



2-4 (3-i) 





h.s. 



5-8 (6-5) 



5-8 (6-9) 



6-9 (7-6) 





length 



110-116 (113) 



116-128 (122) 



137-146 (140) 



Tibia 



f.s. 



2-4 (3-2) 



2-4 (3-4) 



2-4 (3-3) 





h.s. 



6-8 (6-9) 



6-9 (7-5) 



7-9 (8-2) 





length 



64-70 (67) 



64-70 (67) 



70-76 (73) 



Tarsus 



f.s. 



i-3 (2-3) 



i-3 (2-6) 



2-3 (2-4) 





h.s. 



4-6 (5-3) 



4-7 (6-i) 



5-7 (6-4) 



Claw 



length 



27-31 (29) 



27-31 (29) 



27-31 (29) 



Total length 



of leg 



436-461 (445) 



445-473 (455) 



482-503 (494) 



