106 MORPHOLOGY AND TAXONOMY OF ADULT MALES 



on segment II and 2 on segments III to VIII. Abdominal disc pores : Segment I with 10-17 

 (13-5), and segments II to VII with 3-5 pleural pores ; dorsal and ventral abdominal pores 

 absent. 



Glandular pouch well developed ; setae of glandular pouch consist of the two long tail setae, 

 305-320 (314) [i long, and one much shorter seta, 55-92 (73) \l long ; the ratio length of the tail 

 setae to the total length of the body 1 : 4-1-4-4 (1 : 4-2). 



Genital Segment : Comparatively small : triangular in dorsal view ; style short, curving 

 upwards in lateral view. Penial sheath 122-128 (125)11 long and about 76(1 wide, i.e. the ratios 

 its length to its width about i-6 : 1, and its length to the total body length 1 : 10-2-10-9 

 (1 : io-6). Basal ridge of penial sheath well developed, with a small projection. Process of 

 penial sheath well pronounced, with 3-4 (3-6) minute setal sensilla. Aedeagus gradually tapering 

 to a sharply pointed tip. Setae of genital segment on each side : Dorsally, 3 setae always 

 present near the base of the style ; ventrally 4-5 (4-5) setae occur on the penial sheath. 



Material examined : 3 specimens only of this species were available for study, 

 collected by H. Standfast, on Yam (Dioscorea sp.), in Sepik district, Tenteguna, 

 New Guinea, on 23. vi. 1959 (received from D. J. Williams). 



PLANOCOCCOIDES Ezzart & McConnell, 1956 



Planococcoides ireneus De Lotto 



(Text-figs. 9, 10) 



Winged forms only known ; living specimens not available. The males narrow and slender, 

 of medium size, with comparatively short antennae and moderately long legs. When mounted, 

 total body length 1008-1414 (1162) [i, width at mesothorax 280-350 (322)11 and wing expanse 

 1932-2422 (2114)11. 



Body setae and pores : The appendages clothed with many fleshy and few hair-like setae, 

 about 39p. long ; the body itself with hair-like setae only, about 24 [x long. Numerous 

 quadrilocular and occasionally quinquelocular disc pores, about 90. in diameter, occur on the 

 head, the thorax and the abdomen. 



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

 depression hardly indicated in lateral view. Length from apex to postoccipital ridge 98-122 

 (113)11 ; from apex to neck 153-180 (165) y. ; width across genae 174-214 (192)11. Dorsal 

 arm of midcranial ridge slender, anteriorly detached from other arms and posteriorly reaching 

 the posterior level of the dorsal eyes. Ventral and lateral arms of midcranial ridge well 

 developed, forming together a Y-shaped ridge. Postoccipital ridge anteriorly separated from 

 the preocular ridges. Dorsomedial part of epicranium (dmep) slightly raised. Preocular + 

 interocular ridges meet the postocular ridge below the ocellus ; ventral rudiment of the former 

 entirely absent. Preoral ridge slender. Genae large. Eyes : Dorsal simple eyes not projecting 

 beyond the outer margins of the head in dorsal view ; the diameter of their corneae 21-27 

 (24)11, and separated by 79-101 (89)11, i.e. 3-1-4-7 (3-6) times as much as their corneae apart. 

 Ventral simple eyes 24-31 (29)11 in diameter and 18-40 (25)11 apart. Lateral ocelli well 

 developed. Ocular sclerite traversed by the interocular ridge. Cranial apophysis truncate ; 

 tentorial bridge slender. Dorsal head setae 8-1 1 (9-9) on each side of the median line ; each 

 gena always with 3 genal setae. Ventral head setae on each side : 3-5 (3-9) between the ventral 

 eyes ; 7-1 1 (7-7) in the area of the ventral preocular depression, forming a transverse band 

 continuous with those of the other side ; 3-5 (4-3) anteriorly on each side of the ventral arm 

 of the midcranial ridge. Head disc pores : 2-3 (2-4) dorsal pores present near the base of each 

 antenna. 



