OF PSEUDOCOCCIDAE & ERIOCOCCIDAE 159 



Genital segment comparatively small ; style rather straight in lateral view, with rounded 

 apex. Penial sheath 92-107 (98) |x long and 49-61 (55) (x wide, i.e. the ratio length to width 

 1-6-2-1 (i-8) : 1, and the ratio its length to the total body length 1 : 10-2-12-6 (11-3). Basal 

 ridge of penial sheath slender and its projection small. Process of penial sheath absent. Aedeagns 

 comparatively stout and short. Setae of genital segment : Dorsally 3 setae always present 

 on each side near the base of the style ; ventral setae absent, but 0-3 (i-i) setal sensilla occur on 

 each side of the penial sheath. 



Material : 10 specimens examined, collected by N. Mitic-Muzina, on Fragaria 

 vesca, in Belgrade, Yugoslavia, 30.ix.1961. 



CENTROCOCCUS Borchsenius, 1948 



Centrococcus insolitus (Green) 



(Text-figs. 35, 36) 



Macropterous forms only known ; moderately robust, large, with comparatively very long 

 antennae and long and slender legs. When mounted, the total length of the body 1302-1512 

 (1386)^, width at mesothorax 350-392 (378)0. and wing expanse 3136-3556 (3374)1*. 



Body setae and pores : Antennae with numerous, about 6ojx long fleshy setae and a few, 

 about 24 (x long, hair-like ones ; the legs also with fleshy (about 40^ long) and hair-like setae. 

 The body itself with hair-like setae only, yuadrilocular and occasionally trilocular disc pores 

 present on the head, thorax and abdomen, about 6[x in diameter. 



Head : Subtetrahedron ; subtriangular in dorsal and front views ; ventral preocular 

 depression well pronounced in lateral view. Length from apex to postoccipital ridge 128-146 

 (137) u. ; from apex to neck 183-201 (192) \l ; width across the genae 211-238 (220)^. Dorsal 

 arm of midcranial ridge anteriorly continuous with the short ventral arm, and posteriorly meeting 

 the postoccipital ridge. Lateral arms only indicated by short sclerotizations. Postoccipital 

 ridge anteriorly confluent with the preocular ridges. Preocular ridge completely separated 

 from the postocular ridge. Interocular ridge replaced by a short arm attached to the postocular 

 ridge, and dorsally supporting the ocellus. Preoral ridge slender. Eyes : Dorsal simple eyes 

 projecting beyond the outer margins of the head in dorsal view ; their corneae 27-34 (31) jx 

 in diameter and separated by 122-156 (i^j)\t, i.e. 3-7-5-7 (45) times their diameter apart. 

 Ventral simple eyes 31-43 (37) (x in diameter and 27-43 (34)^ apart. Lateral ocelli well 

 developed, dorsally supported by the ridge-like arm as mentioned. Cranial apophysis apically 

 truncate. Tentorial bridge slender. Dorsal head setae 7-12 (9-8) on each side anterior to the 

 postoccipital ridge ; each gena usually with 1-3 genal setae, but in few specimens the setae 

 of either gena were absent (av. i-6). Ventral head setae on each side : Setae between the 

 ventral eyes absent ; 5-8 (6-2) in the area of the ventral preocular depression, forming on both 

 sides a transverse band ; 2-3 (2-3) on each side of the ventral arm of the midcranial ridge. 

 Head disc pores : One dorsal and one ventral head pore usually present a least on one side of 

 the dorsal and ventral arms of the midcranial ridge (averages 06 and 09 respectively). 



Antennae : Filiform ; 10-segmented ; 875-1254 (1095) [x long, i.e. longer than half the 

 total length of the body (ratio 1 : i»i— 1-5, av. 1-3), and longer than the hind legs (ratio 1-1-1-3, 

 av. 1-2 : 1). Scape 61-64 (63)^ long and 52-58 (55) (x wide at base ; always with 4 h.s. 

 Pedicel 61-73 (67) u. long and 37-40 (39) u. wide ; with 6-1 1 (7-3) f.s., 4-8 (5-3) h.s. and a 

 sensillum placodeum. Flagellar segments cylindrical, about 2ijx wide. Segment III longest of 

 all, the ratio lengths of segments III to X being 1-4-1-9 (i-6) : 1, and the ratio width to length 



