OF THE FAMILY COCCIDAK 123 



proximal ones ; with 23-29 (average 26), 20-27 (average 23), 13-24 (average 19), 17-23 

 (average 21), 14-20 (average 17) and 12-17 (average 15) f.s. respectively, but no h.s. ; antennal 

 bristles on segments VIII-IX distinctly larger than f.s. Segment X : terminal £ constricted ; 

 65-84 (average 78) \x long and 19-23 (average 21) (i wide (near base) ; carrying 2— II (average 

 7-8) f.s., 3 capitate subapical setae and 5 antennal bristles of which the 3 long ones are about $ as 

 long as the segment and the 2 shorter ones about as long as f.s. (but stouter) ; with 2 sensilla 

 basiconica ventrally, one near apex and the other more proximal. 



Thorax 498-593 (average 531) u. long. 



Prothorax. Pronotal ridge strong, but medially interrupted by weak sclerotization. Lateral 

 pronotal scleriles small, without setae. Medial pronotal setae : occasionally one f.s. behind 

 pronotal sclerites. Post-tergites relatively large, with irregular striations, without setae. 

 Pleural structures typical of family. Sternum with transverse ridge strong, median ridge 

 represented by a weak basal stalk, and triangular sclerite narrow and weakly sclerotized. 

 Anteprosternal setae : 2-5 (average 3-5) f.s. on each side, with no setae occurring dorsal to 

 proepisternum + cervical sclerite ; prosternal setae : 14-24 (average 19) f.s. and occasionally 

 one h.s., scattered over the sternal area but not spreading into the area anterior to the spiracles. 



Mesothorax. Mesoprephragma with moderately deep emargination. Prescutum about twice 

 as wide as long (average 196 and 96 |jl respectively) ; anterior margin curved ; laterally bounded 

 by the prescutal ridges and posteriorly by the prescutal suture ; medially with somewhat more 

 heavy sclerotization becoming ridge-like anteroventrally ; with distinct polygonal reticulation. 

 Scutum. Median membranous area subrectangular ; 80-99 (average 91) \i long and 1-75-2-14 

 (average 1 -99) times as wide (width 160-209, average 180 jj.) , with 2-1 1 (average 67) f.s. and 9-12 

 (average 11) h.s. Scutellum 46-65 (average 55) u. long and 175 198 (average 188) pt wide, the 

 ratio being 1 : 3-1-4-1 (average 3-5) ; tubular, with small ventral foramen ; without setae. 

 Postnotum reticulated, with anterior margin irregular and exposed ; postnotal apophysis and 

 postalare well developed, the latter densely reticulated distally and with 1-6 (average 33) 

 fleshy postalary setae occurring on or immediately posterior to it. Mesopostphragma with 

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

 coxal articulation ; pleural apophysis and pleural wing process well developed. Basalare 

 absent. Subalare small. Episternum distinctly polygonally reticulated ; subepisternal ridge 

 well developed, but below membranous cleft indistinct and only marked by a band of darker 

 sclerotization. Epimeron small. Later opleurite partly bounded anteriorly by an extension 

 from marginal ridge. Basisternum large, about 232 \x wide and 158 (x long, i.e. 1-60-1-88 

 (average 1 -74) 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 : 14-29 (average 

 21) f.s. and occasionally one h.s., arranged in a group behind each spiracle and a small number 

 posterior to prosternum. Tegula small, membranous bulge with a small weak sclerite posteriorly 

 and with 3-10 (average 5-7) h.s. Third axillary wing sclerite with a pronounced ventral projec- 

 tion at its base. Antemetaspiracular setae : z-j (average 4-1) f.s. 



Metathorax. Metanotum with thickening of posterior margin desclerotized medially ; 

 suspensorial sclerites absent. Postnotum consisting of two small sclerites, one on each side. 

 Metatergal setae : 1-6 (average 2-9) f.s. and sometimes up to 3 (0-3, average o-8) h.s. of which one 

 is occasionally situated more medially than the others. Pleural ridge considerably reduced, 

 extending only a short distance above coxal articulation. Vestigial precoxal ridge present. 

 Episternum reduced to a small subtriangular plate ; epimeron produced posteriorly. Meta- 

 thoracic spiracle similar to mesothoracic one. Dorsospiracular setae : 9-18 (average 15) f.s. 

 Postmetaspiracular setae : 13-19 (average 16) f.s. and 1-3 (average 1 -6) h.s. Metasternal plate 

 weak and irregular, but more heavily sclerotized anteriorly. Anterior and posterior meta- 

 sternal setae : 41-66 (average 54) and 20-46 (average ^^) f.s. respectively. 



Wings hyaline ; short and comparatively broad : 970-1060 (average 1018) a. long and 445-500 

 (average 483) u. wide, the ratio width to length being 1 : 2-04-2-18 (average 211) ; alar lobe and 

 alar setae absent. Halleres absent. 



