OF THE FAMILY COCCIDAK 



61 



which is about half as big as the other two ; corneae of dorsal eyes 27-30 (average 29) [j. in 

 diameter and 3-0-4-3 (average 3-6) times as much apart ; those of the ventral eyes 29-33 

 (average 30) u. in diameter and 1-2-1-7 (average 14) times as much apart. Ocellus small. 

 Ocular sclerite well sclerotized and polygonally reticulated throughout. Preocular ridge with 

 ventral part almost reaching midcranial ridge. Postocular ridge tapering dorsally, well developed 

 lateroventrally, and narrow but well defined posteromedially ; below ocellus the ridge splits up, 

 with anterior branch partly surrounding ocellus. I nterocular ridge absent. Dorsal ocular 

 setae absent ; ventral head setae : 2-10 (average 6-3) h.s., situated medially just behind the 

 preocular ridges. Preoral ridge present. Tendon-like apodeme long. Cranial apophysis of 

 medium length ; apex bifurcate, not reaching the level of anterior margin of ventral eyes. 

 Mouth opening irregular. Anterior tentorial pits absent. 



Antennae 10-segmented, filiform ; 1 120 1370 (average 1284) u. long, i.e. longer than half body 

 length (ratio 1 : 1-47-1 -75, average 1-58), longer than posterior leg (ratio 1 : 106-118, average 

 1 13) and longer than penial sheath (ratio 1 : 3-38-3-94, average 3-74). Scape 59-65 (average 

 62) u long and 46-51 (average 48) u. wide, with 34 (average 33) h.s. Pedicel with distinct. 

 polygonal, dorsal reticulation ; 57-65 (average 62) u. long and 49-59 (average 54) u. wide ; 

 with 2-6 (average 3-6) f.s., 7-1 1 (average 8-4) h.s. and a sensillum placodeum. Segment 111 

 bulging in the middle, 1-9-2-6 (average 21) times longer than wide (76-87, average 80 u. long 

 and 34 30, average 35 (jl wide) ; with 4-0 (average 7-1) h.s and 4 12 (average 7-9) f. s., the latter 

 of medium length, 0-9-1-2 (average 11) times as long .is width of segment ; with 1-3 usual 

 sensilla basiconica. Segments IV IX cylindrical ; lengths of these segments (in \L) 194-220 

 (average 205), 182-247 (average 223), 171 224 (average 204), 129-186 (average 165), 87-118 

 (average 108) and 72-99 (average 86) respectively, all of about the same width, varying from 

 21 to 2<> \i; with 33-45 (average 38), 37-44 (average 41), 30 49 (average 41 1, 28 39 (average 33), 

 7-22 (average 16) and 10-19 (average 14) f.s, and 24 (average 3), 3 9 (average 51), 2-7 

 (average 4), 3-6 (average 4-2), 1-4 (average 2-9) and 0-5 (average 23) h.s. respectively . 

 antennal bristles on segments YIII-IX distini tly larger than f.s. Segment X : terminal part 

 not constricted ; 86-90 (average 02) (x long and 23-26 (average 24) \i wide ; carrying 6-12 

 (average 9) f.s., 0-3 (average i-i) h.s., 3 capitate sitbapical setae and 5 antenna! bristles of whi< h 

 the 3 long ones are up to half as long as the segment an 1 the 2 shorter ones somewh it shorter 

 but distinctly thicker than the f.s. ; with 2 sensilla basiconica ventrally, one near apex and the 

 other more proximal. 



Thorax 733-794 (aver age 766) [i. long. 



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

 pronotal sclerites small, without setae. Medial pronotal setae : sometimes one or two (0-2, 

 average 0-7) h.s. Post-tergiles narrow, elongated, without stn.itions and without setae. 

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

 ridge, which is usually weak and interrupted posteriorly, and a narrow triangular sclerite. 

 Anteprosternal setae absent ; prosternal setae : 1—2 (average 1-7) h.s., usually one on each side. 



Fig. 15. Filippia viburni (Sign.), lateral view, 



