. Bulletin of the British Museum (Natural History) Entom Supp. MORPHOLOGY AND TAXONOMY OF ADULT MALES ones distinctly larger than the ; with 2 sensilla basiconica ventrally, one near apex and the other more proximal. Thorax 650-749 (average 703) u. long. Prothorax. Pronotal ridge strong, but medially interrupted by weak sclerotization. Lateral pronotal sclerites small, without setae. Medial pronotal setae and pores absent. Post-tergites medium-sized, not striated, with 4-13 (average 7 -8) fleshy post-tergital setae occurring on and behind the sclerite on each side. Pleural structures typi
. Bulletin of the British Museum (Natural History) Entom Supp. MORPHOLOGY AND TAXONOMY OF ADULT MALES ones distinctly larger than the ; with 2 sensilla basiconica ventrally, one near apex and the other more proximal. Thorax 650-749 (average 703) u. long. Prothorax. Pronotal ridge strong, but medially interrupted by weak sclerotization. Lateral pronotal sclerites small, without setae. Medial pronotal setae and pores absent. Post-tergites medium-sized, not striated, with 4-13 (average 7 -8) fleshy post-tergital setae occurring on and behind the sclerite on each side. Pleural structures typical of family. Sternum with strong transverse ridge, irregular median ridge and a small triangular sclerite. Anteprosternal setae : 0-6 (average 2-9) on each side ; prostemal setae : 10-54 (average 37) and 0-2 (average 1) , scattered over the sternal area and spreading into the area anterior to the spiracles. Mesothorax. Mesoprephragma with shallow emargination. Prescutum about if times as wide as long (average 208 and 119 jx respectively) ; anterior margin strongly curved ; laterally bounded by the prescutal ridges and posteriorly by the prescutal suture ; slightly more heavily sclerotized medially, reticulation weak or absent. Scutum. Median membranous area subrectangular ; 118-125 (average 123) \x long and 1-52-1-67 (average 1-59) times as wide (width 179-209, average 196 ;x) ; with 15-28 (average 20) but no Scutellum 65-68 (average 67) [x long and 179-209 (average 196) [x wide, the ratio being 1 : 3-0-3-4 (average 3-2) ; tubular, with small ventral foramen ; without setae. Postnotum with anterior margin irregular, weakly sclerotized and either exposed or partly overlapped by metathoracic fold ; postnotal apophysis and postalare well developed, the latter densely reticulated distally and occasionally with a fleshy postalary seta. Mesopostphragma with deep emargination. Meso- pleuron. Mesopleural ridge strong, not interrupted above coxal articulation ;
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