no MORPHOLOGY AND TAXONOMY OF ADULT MALES 



sclerotized medially ; polygonally reticulated. Scutum. Median membranous area sub- 

 rectangular ; 118-133 (average 128) \l long and 1-53-1 -82 (average i-6i) times as wide (width 

 182-236, average 206 \x) ; with 11-26 (average 20) h.s., but no f.s. Scutellum 65-87 (average 

 74) \x long and 198-247 (average 220) y. wide, ratio being 1 : 2-9-3-3 (average 3) ; tubular ; 

 ventral foramen small, its length usually less than half that of scutellum ; without setae. 

 Postnotum with anterior margin weakly sclerotized, irregular, and usually not overlapped by 

 metathoracic fold ; polygonally reticulated dorsally ; postnotal apophysis and postalare well 

 developed, the latter densely reticulated distally and without setae. Mesopostphragma with 

 deep emargination. Mesopleuron. Mesopleural ridge strong, not interrupted above coxal 

 articulation ; pleural apophysis and pleural wing process well developed. Basalare vestigial, 

 incorporated into pleural wing process, not joining the latter with episternum. Subulare small, 

 Episternum showing polygonal reticulation dorsally ; subepisternal ridge well developed, but 

 below membranous cleft indistinct and only marked by a band of dark sclerotization. 

 Epimeron small. Later opleurite not bounded anteriorly by an extension from marginal ridge. 

 Basisternum : large, about 270 [z wide and 214 y. long, i.e. 1 -50-1 -82 (average 1 -68) times longer 

 than membranous area of scutum ; with strong median ridge and bounded by strong marginal 

 and precoxal ridges ; without setae. Furca well developed. Mesothoracic spiracle with well 

 developed peritreme ; postmesospiracular setae numerous, consisting of 71-98 (average 89) f.s. 

 and 0-2 (average 0-9) h.s., arranged in a broad band behind the spiracles and presternum. 

 Tegula small, membranous bulge with a small weak sclerite posteriorly and with 6-8 (average 

 7-2) h.s. Third axillary wing sclerite with a small ventral projection at its base. Additional 

 sclerite small, well sclerotized. Antemetaspiracular setae : 4-12 (average 6-5) f.s. 



Metathorax. Metanotum with posterior margin desclerotized medially ; suspensorial sclerites 

 absent ; a small, additional sclerite sometimes present anterior to postnotum. Postnotum 

 consisting of a small, transverse sclerite on each side. Metatergal setae : 0-2 (average o-8) f.s. 

 and 0-2 (average 1) h.s. on each side. Pleural ridge considerably reduced, extending only a 

 short distance above coxal articulation. Vestigial precoxal ridge usually present. Episternum 

 reduced to a small plate ; epimeron produced posteriorly. Metathoracic spiracle similar to 

 mesothoracic one. Dorsospiracular setae : 5-14 (average 10) f.s. Postmetaspiracular setae : 

 21-35 (average 30) f.s. and 0-2 (average 0-9) h.s. Metastemal sclerite represented by a weak 

 transverse plate. Anterior and posterior metastemal setae : 76-94 (average 86) and 31-60 

 (average 42) f.s. respectively. 



Wings hyaline ; short (length 1330-1510, average 1439 u.) but comparatively broad (width 

 620-740, average 686 \x), the ratio width to length being 1 : 2-04-2-15 (average 2-10) ; alar 

 lobe and alar setae absent. H alter es absent. 



Legs long and slender, with fore pair shortest and hind pair longest ; ratio length of hind leg 

 to body length is 1 : 1-74-1-84 (average i-8i). Length of segments (in jx) : 



Tibia Tarsus Claw Total 



395-452 125-141 24-29 984-1091 



(429) (132) (26) (1042) 



418-471 I37-H3 27-30 1003-1113 



(444) (140) (28) (1062) 



441-479 i37-!52 27-32 1051-1146 



(465) (144) (29) (1109) 



Coxae : 17-24 (average 20) f.s. on the fore and 23-43 on the middle and hind coxa, and each 

 with 10-19 h.s. ; fore coxa with 3-4 (average 3-5) capitate coxal bristles ; apical seta about 

 |— § as long as trochanter. Trochanters 29-34 V- wide ; with 6 oval sensilla, 12-21 f.s. and 8-1 1 

 h.s., the latter including 2 minute setae near basal ridge, one small seta on outer margin and one 

 long apical seta which, on the fore trochanter, is 2 -6-3 -4 (average 3) times as long as width of 

 trochanter. Femora of medium width (42-53 (x), ratio width to length of hind femur being 

 1 : 4-8-5-7 (average 5-2) ; with 36-54 f.s. and 15-27 h.s. Tibiae 23-30 jx wide, ratio width to 

 length of hind tibia being 1 : 15-0-19-1 (average 16-4) ; each with 107-153 setae, of which 

 30-47 are h.s. and 76-110 f.s., the latter about as long as width of tibia ; apical spur about the 



-eg 



Coxa 



Trochanter 



Femur 



I 



72-80 



99-118 



247-285 





(76) 



(108) 



(271) 



II 



87-95 



106-118 



224-262 





(92) 



(112) 



(244) 



II 



95-107 



106-122 



232-266 





(102) 



("7) 



(251) 



