OF THE FAMILY COCCIDAK 



53 



220) (x, width across genae 217-241 (average 233) (x. Median crest sclerotized and distinctly 

 polygonally reticulated ; with 6-9 (average 7-4) hair-like dorsal head setae, arranged in a group 

 of one or two near the anterior margin of the head and a group of 5-8 (average 6-2) more 

 posteriorly. Midcranial ridge dorsally represented by a short, weak ridge near anterior margin ; 

 ventrally narrow, but well defined, reaching ocular sclerite posteriorly, surrounding area with 

 weak, polygonal reticulation posteriorly. Genae large, sclerotized, not distinctly reticulated, 

 without setae. Eyes : two pairs ; subequal ; corneae of dorsal eyes 21-25 (average 22) u. in 

 diameter and 3-4-4-2 (average 39) times as much apart ; those of the ventral eyes 22-27 

 (average 24) \x in diameter and 1-2-1-8 (average 1 -6) 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 weak and tapering dorsally, 

 well developed lateroventrally, but weak posteromedially ; below ocellus the ridge splits up, 

 with anterior branch partly surrounding ocellus. Interocular ridge absent. Dorsal ocular 

 setae absent ; ventral head setae : 4-7 (average 5-6) h.s., situated anterior to the ocular sclerite 

 on each side of the midcranial ridge. Preoral ridge present. Tendon-like apodeme short. 

 Cranial apophysis of medium length ; apex bifurcate with a central lobe, extending to around 

 the level of the posterior margin of the ventral eyes. Mouth opening irregular. Anterior 

 tentorial pits apparently absent. 



Antennae 10-segmented, filiform ; 705-883 (average 819) jx long, i.e. longer than half body 

 length (ratio 1 : 1-63-1-96, average 176), longer than posterior leg (ratio 1 : 1-15-1-22, average 

 1 19) and longer than penial sheath (ratio 1 : 2-83-3-26, average 3-09). Scape 46-57 (average 

 51) u. long and 40-46 (average 42) u. wide, with 3 h.s. Pedicel with distini t, polygonal, dorsal 

 reticulation ; 42-51 (average 47) ;x long and 38-42 (average 40) ;x wide ; with 1-7 (average 

 J-]) f.s., 2-5 (average 35) f.s. and a scnsillum placodeum. Segment III club-shaped, 2-7-3-6 

 (average 3-2) times longer than wide (76-87, average 81 jx long and 21-30, average 26 (x wide), 



Fig. 10. Palaeolecanium bituberculatum (Targ.), dorsal and ventral view. 



