OF PSEUDOCOCCIDAE & ERIOCOCCIDAE 197 



side. Anterior and posterior postalar ridges anteriorly joined. Mesopleural ridge 

 continuous above the coxal articulation. Basal part of the trochanter shorter 

 than the distal. Claw broad at base, abruptly tapering apically ; ungual digitules 

 apically knobbed. One of the dorsal setae on each side of abdominal segment VIII 

 much longer than the others ; setae of the glandular pouch include one pair of tail 

 setae only. Basal part of the penial sheath long, fused with the 9th tergite + 10th 

 segment and forming together a compact genital capsule. Anal opening large. 

 Aedeagus arising at a comparatively large distance from the basal ring of the genital 

 capsule. Dorsal setae of the genital segment considerably longer than other 

 abdominal setae, always 2. Derm pores absent. The puparia compact, closely 

 felted and rather flattened ....... Eriococcidae (p. 167) 



Pseudococcidae 

 Key to Groups of Genera 



Dorsal, lateral and ventral arms of the midcranial ridge joined, forming 

 together a cruciform structure. Pre- and postocular ridges widely separated ; 

 interocular ridge absent. Anterior tentorial arms each apparently indivi- 

 dually fused with the cranial apophysis. Penultimate antennal segment 

 more than 37 times as long as wide. Prescutum triangular in dorsal view. 

 Scutum without a median longitudinal narrow membranous area, and much 

 shorter than either the prescutum or the scutellum. Precoxal ridge of the 

 metathorax weakly developed ; metapleural wing process absent. Tarsal 

 digitules absent. Setae of the glandular pouch include two long tail setae 

 and a short one, subequal in length to the other abdominal setae ; the tail 

 setae comparatively short, the body being 5 times as long, or longer . . 2 



Dorsal arm of the midcranial ridge distinctly detached from the Y- or T-shaped 

 ridge formed by the lateral and the ventral arms. Pre- and postocular 

 ridges joined together by means of a well developed interocular ridge. 

 Anterior tentorial arms anteriorly fused with each other before joining the 

 cranial apophysis. Penultimate antennal segment less than 3-7 times as 

 long as wide. Prescutum transverse, rectangular in dorsal view. Scutum 

 with a distinct median longitudinal narrow membranous area, and longer 

 than either the prescutum or the scutellum. Precoxal ridge of the meta- 

 thorax well developed ; with a small metapleural wing process. Tarsal 

 digitules present. Setae of the glandular pouch include a pair of long tail 

 setae and one or more setae conspicuously longer than other abdominal 

 setae ; the tail setae comparatively long, the body being less than 5 times 

 as long .... ....... 3 



(1) Disc pores absent. Lateral ocelli vestigial. Third and terminal antennal 

 segments subequal in length (third not more than 11 times as long as 

 terminal) ; the length of segment III less than 5 times its width. Antennal 

 setae subequal in length to the body setae ; capitate, apically knobbed 

 sensory setae present on segments III to X. Proepisternum with only the 

 dorsal margin ridge-like. Prescutal ridges well separated postero-medially. 

 Postmesostigmatal setae, alar setae and metapostnotal ridge absent. Fore 

 legs shortest. Ostioles absent. Dorsal setae of abdominal segment VIII 

 absent. Glandular pouches and their setae only on abdominal segment 

 VIII ; the tail setae relatively short, the body being 8 or more times as 

 long. Basal ridges of the penial sheath medially continuous 



NAIROBIA group (p. 163) 

 [Only one species, N. bifrons] 



