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8 (3) Basal abdominal segment without black bristles 



laterally. (Abdomen dull metallic green or at least 

 submetallic, tarsi apparently variable, either black 

 or dark above or yellowish. ) psciidophancs. 



9 [2] Small cross-vein far before the middle of the upper 



side of the discal cell (Abdomen shining, blue- 

 black) iiyctias. 



10 (i) Wings with a pigmented stigma. 



1 1 (42) Males. 



12 (13) Stigma enclosed by a cross-vein at the base 



hefcrosfigniiis. 



13 (12) Stigma not enclosed at base. 



14 (15) Legs, except coxae and the ap'cal joint of tarsi. \el- 



low, unicolorous or nearly so vanihocncuns. 



15 (14) Legs more or less black or dark, at least on the 



femora. 



16 (T^y) Antennae with the third joint always acutely pointed 



at apex, usually acuminately produced. 



17 (26) Wings with the tl ird and fourth costal segment;; sub- 



equal, or with the fourth never much shorter than 

 third, sometimes the fourth is the longer. 



18 (21) Basal abdominal segment at the sides with a short 



line of distinct black bristles, which are obviously 

 different from any other hairs on the abdomen. 



19 (20) Thorax and abdomen with fuscous tomentum; hypo- 



pygivmi above with a deep narrow channel on the 

 right side cruciator. 



20 (19) Thorax and abdomen mostly black or blackish, the 



latter with whitish lateral tomentose spots; hypo- 

 pygium on the right side at the tip wdth a more or 

 less ovate dull area of peculiar texture. . . .eucalypti. 



21 (18) Basal abdominal segment without any special bristles 



at the sides; if hairy, then the hairs are similar to 

 the general clothing. 



22 {2^) Whole body wath pale erect soft hairs, which are 



long and conspicuous ciifrichodcs. 



23 (22) Body not so clothed; hairs, where present, short and 



inconspicuous. 



24 (25) Scutellum w'ith a marginal fringe of fine, but c|uite 



distinct hairs; abdomen for the most part blackish 

 on the dorsum, the surface not concealed under 

 dense tomentum hencficiens. 



