94 MORPHOLOGY AND TAXONOMY OF ADULT MALES 



Antennae : Filiform ; normally io-segmented but sometimes two or more adjacent segments 

 of the flagellum fused or incompletely separated ; 589-631 (616) (x long, i.e. somewhat longer 

 than half the body length (the ratio 1 : 1-6-1-9, av. i-8), and somewhat shorter than the hind 

 legs, the ratio 1 : 1-1-1-2 (1-16). Scape 37-43 (40)^ long and just as wide at the base ; with 

 4-7 (5-6) h.s. Pedicel 58-64 (61) [x long and 34-37 (35) fx wide ; with 19-26 (22-9) f.s., 3-10 

 (6-9) h.s. and a sensillum placodeum. Flagellum : Segment III club-shaped, about as long 

 as segment X, and both being longest of all (the ratio lengths of segments III to X 1 : 0-9-1-1, 

 av. i-o) ; the ratio width to length of segment III 1 : 3-3-4-1 (3-9). Segments IV to X 

 cylindrical and 21-24 (22) (A wide ; the ratio width to length of segment IX being 1 : 2-4-3-0 

 (2-8). In the following table are shown the lengths of segments III to X and the number of 

 setae on each: 





Ill 



IV 



V 



VI 



VII 



VIII 



IX 



X 



lengths in [x 



76-89 



49-55 



52-61 



55-64 



55-04 



61-64 



58-64 



78-89 



(av.) 



(82) 



(52) 



(55) 



(61) 



(61) 



(63) 



(61) 



(82) 



f.s. 



10-17 



11-18 



13-18 



13-18 



13-20 



12-16 



12-17 



13-20 



(av.) 



(12-8) 



(12-9) 



(14-8) 



(15-5) 



(147) 



(14-2) 



(M-i) 



(i6-i) 



h.s. 



2-5 



i-3 



i-3 



i-3 



1-2 



1-2 



1-2 



1-2 



(av.) 



(3) 



(i-8) 



(2-2) 



(i'9) 



(i-6) 



(17) 



(1-4) 



(2) 



Antennal bristles easily distinguishable from the fleshy setae ; segments VIII and IX each 

 with a ventral bristle, about 43 [x long. Segment X with 3 preapical bristles, two lateral, also 

 about 43 jx long and one dorsal, slightly shorter ; this segment also with two capitate subapical 

 setae, about 40 jx long, and one apical hair-like seta. 



Thorax : 426-540 (486) jx long. Prothorax : Pronolal ridges medially interrupted at a weak 

 point. Lateral pronotal sclerites and post-tergites small. Proepisternum + cervical sclerite 

 well developed, with the usual constriction which indicates the point of fusion between the 

 two component parts ; Theron (1958) called it propleuron -f- cervical sclerite, regarding it 

 as a ridge-like structure, but according to the writer's observations, the small episternum is 

 distinct and its dorsal margin only is ridge-like. It articulates posteriorly with the coxa by 

 means of a short propleural ridge, above which a small apophysis is invaginated. Prosternum 

 triangular, 31-46 (40) jx long; posteriorly bounded by a transverse, 70-92 (79) [x long pr asternal 

 ridge. Prothoracic setae on each side : Medial pronotal setae 1-2 (1-4) ; lateral pronotal setae 

 usually absent but one seta may occasionally occur on either side (av. 0-2). Antespiracular 

 dorsal setae 2—4 (2-9), and one antespiracular ventral seta always present. Prosternal setae usually 

 one and occasionally two (av. i-i). Prothoracic disc pores on each side : Medial pronotal pores 

 1-2 (1-2) ; lateral pronotal pores 3-6 (4-3) ; antespiracular dorsal pores 2-3 (2-2). Ventral 

 prosternal pores 0-2 (0-5). 



Mesothorax : Prescutum subrectangular in dorsal view ; 70-82 (79) jx long and 107-119 

 (n6)(x wide (ratio 1 : 1-4-1-6, av. 1-5) ; laterally bounded by the prescutal ridge and posteriorly 

 by the prescutal suture. Scutum comparatively large, with the antero-lateral extremities 

 heavily sclerotized and with a narrow median longitudinal membranous area ; the scutum 

 107-116 (no)[x long, i.e. the ratio lengths of prescutum to scutum 1 : 1-3-1-5 (1-4). Prealare, 

 prealar ridge, triangular plate, tegula, anterior and posterior notal wing processes well developed. 

 Scutellum pentagonal, 49-61 (55)0. long and 89-104 (95)^ wide, the ratio being 1 : 1-6-1-9 (17) 

 and the ratio its length to the length of the scutum 1 : 1-8-2-3 (2-0). Postalare with well 

 separated anterior and posterior postalar ridges ; postnotal apophysis strong. Mesopleuron : 

 Mesopleural ridge interrupted at a short distance above the coxal articulation ; Theron (1958) 

 neither commented on this interruption nor showed it in his illustrations. Mesopleural 

 apophysis, mesopleural wing process, basalare and subepisternal ridge well developed ; subalare 

 small. The two parts of the episternum weakly sclerotized ; later opleurite thin ; mesepimeron 

 small. Mesosternum : Basisternum 134-143 (140) [x long and 156-183 (171) \l wide ; bounded 

 antero-laterally and posteriorly by the marginal and the precoxal ridges respectively ; furca 

 strong. Mesotkoracic spiracles 15-21 (i8)jx wide at opening, with 31-37 (34)^ long supporting 



