()!•• THK FAMILY COCCIDAE 



47 



Antennae io-segmented, filiform ; 604-101 1 (average 770) u. long, i.e. shorter than half body 

 length (ratio 1 : 2-12-2-63, average 2-37), about as long as posterior leg (ratio 1 : 0-91-1 11, 

 average 0-99) and longer than penial sheath (ratio 1 : 1-32-1-69, average 147). Scape 46-72 

 (average 59) li long and 42-61 (average 51) Lt wide, with 3 h.s. Pedicel with distinct, polygonal 

 dorsal reticulation ; 38-57 (average 46) li long and 42-53 (average 46) li wide ; with 2 h.s. 

 and a sensillum placodeum. Segment III bulging in middle, 1-82-6 (average 2-1) times longer 

 than wide (61-91, average 73 pi long and 30-42, average 35 li wide) ; with 1-3 (average 2-1) h.s. 

 and 7-19 (average 11) f.s., the latter of medium length, 0-9-1-3 (average 11) times as long as 

 width of segment ; with 1-6 usual sensilla basiconica. Segments IV- IX cylindrical ; lengths 

 of these segments (in li) 80-160 (average 114), 68-137 (average 98), 76-137 (average 101), 

 65-114 (average 86), 57-95 (average 74) and 46-84 (average 61) respectively, widths varying 

 from 25 to 34 Li, with distal segments wider than proximal ones ; with 12 37 (average 25), 

 14-31 (average 23), 21 30 (average 25), 17-27 (average 24), 15-23 (average 19) and 14-19 

 (average 17) f.s. respectively, but no h.s. ; antennal bristles on segments VIII- IX slightlv 

 thicker than f.s. Segment X : terminal part not constricted ; 46-68 (average 58) li long and 

 27-31 (average 30) li wide ; carrying 7 1 1 (average 9) 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 not markedly different from the Is. ; with 2 sensilla basiconica ventrallv, one near apex 

 and the other more proximal. 



Thorax 494-673 (average 565) \i long. 



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

 pronotal sclerites large, without setae. Medial \ctae absent, Post-tergites medium-sized, without 

 striations and without setae I'leiiral structures typical of the family. Sternum with trans- 

 verse ridge strong, median ridge reduced to a basal stalk, and a triangular sclerite. Ante- 

 prosternal setae absent ; occasionally a hairdike prosternal seta present. 



Mesothorax. Mesoprephragma with no cmargination. Presciitum about twice as wide as long 

 (average 163 and 88 li respectively) ; anterior margin slightly curved ; laterally bounded by 

 the prescutal ridges and posteriorly by the prescutal suture ; polygonally reticulated ; slightly 

 more heavily sclerotized medially. Scutum. Median membranous area subrectangular ; 

 68-91 (average 82) li long and 1-48-2-30 (average 1-79) times as wide, (width 122 170, average 

 146 [a) ; without setae. Scutellum 59-103 (average 78) li long and 133 104 (average 151) li 

 wide, ratio being 1 : 1-8-2-4 (average 2) ; not tubular ; without setae. Postnotum with 

 anterior margin irregular and partly overlapped by the metathoracic fold ; postnatal apophysis 

 and poslalare well developed, the latter densely reticulated distallv. Mesopostphragma with 

 shallow emargination. Mesopleuro>i. Mesopleural ridge strong, but interrupted above coxal 

 articulation ; pleural apophysis and pleural wing process well developed, the latter connected 

 with episternum by a narrow basalare Subalare small. Episternum not reticulated ; sub- 

 episternal ridge well developed, but below the membranous cleft indistinct and only marked by 

 a band of dark sclerotization. Epimeron small, l.ateroplcm ite bounded anteriorly by an 

 extension from marginal ridge. Basisternum large, about 251 li wide and 168 li long, i.e. 

 1-7-2-4 (average 2-1) times longer than membranous area of scutum ; with strong median 

 ridge and bounded by strong marginal and precoxal ridges ; with 1-2 (average i-8) h.s. on or 

 near median ridge. Furca well developed. Mesothoracic spiracle with well developed peri- 



FlG. 7. Physokermes piceae (Schr.), lateral view. 



