330 AUSTRALIAN PSYLLIDyE, 



surface of head and thorax dull white; abdomen liglit f^reen with 

 a yellowish tint, wrinkled and convex. Legs short, stout. 



Imago. — Length 0-085, antenniB 0025 inch. General colour 

 of head, antennae, upper surface of thorax and abdomen black; 

 legs dark brown, with lighter markings on the joints. Ventral 

 surface of head, thorax, and tip of abdomen ochreous, the rest 

 pale yellowish-green. Wings dull opaline, nervures dark brown, 

 tinged with yellow at base. Head small, lobed and deeply cleft 

 in front, rounded to e3'es, arcuate behind. Face lobes very shorty 

 broad, rounded, clothed with fine hairs. Antennae long, slender, 

 iiliform; 1st joint short, broad; 2nd short, cup-shaped; 3rd-8th 

 irregular, slender; 9th swollen at tip; 10th very short and swollen. 

 Ej'es very large, rounded on sides, angular on inner margins; 

 lateral ocelli in line with hind margin of eyes; central ocellus at 

 at apex of median suture. Thorax : prothorax very narrow 

 behind, curving round, forming a lobe on either side behind eyes; 

 dorsulum large, rounded in front, sloping on sides to a point on 

 outer margins, with a small rounded lobe behind in line with base 

 of wings; mesothorax broad, arcuate in front, sloping on sides 

 and rounded behind; scutellum large, rounded. Legs : femora 

 short, stout, rounded; tibite of fore and middle legs short, hairy; 

 those of hind pair longer, with the apical edge fringed with fine 

 black spines; tarsi very short and broad, claws large. Wings 

 nearly thrice as long as broad, finely coriaceous, broadly rounded 

 at apex, nervures thick, primary stalk long, costal cell nearly 

 transverse at apex; stalk of subcosta very short, radius long, 

 upper branch of cubitus long, curving downward, upper and 

 lower forks nearly of equal length, forming an angular cell, 

 upper fork emerging at tip of wing, lower branch of cubitus not 

 quite as long as lower fork; upper fork long, curving round, clavus 

 short and stout. Abdomen short, tapering to apex. Genitalia i 

 ((J) long, tubular, lower genital plate short, broad, rounded ; 

 forceps short, cylindrical, curved inwards; upper genital plate 

 long, cylindrical, standing straight out above point of abdomen. 



Ilab. — Hobart, Tasmania (galls on Eucalyptus amyydalhia: A, 

 M. Lea). 



