PlITTODI.TiTUS. 



219 



The o-enus, as a whole, is iu need of revision, owiug to niaccu- 

 racies" arising from lack of structural distiuctious and the in- 

 stability of coloration, upon wliich too much reliance has formerl}^ 

 been placed. 



Table of Sjiecies. 



1 (•>) Fh'st abdominal so-iinent not basally 



explauate coryplucus, Grav. 



'^ (V) First abdominal seiinient distmctly 



explanate basally ^nue, sp. u. 



Fh 



151. Phytodisetiis corypliseus, Grav. 



hytodidvs con/p/imis, Gravenborst Icbn Eur. ii, 1S29 p 04o, 



excl var. 3; Tascbeuberg, Zeits. Ges. ^at. 18b3, p. 1^92 ( $ ) ; 



Scbmiedeknecbt, Zool. Jabr. 1900, p. 340: Morley, Icbii. Bnt. 



ill, 1908, p. 243 (d$). 

 (S 9 . Head not very narrow behind the eyes ; epistoma a little 

 prominent ; $ with palpi and mandibles (except apically) testa- 

 ceous clvpeus ferruginous and the orbits tiavous on the vertex; 

 A with the whole face, mouth, cheeks and frontal orbits to occiput 



tiavous. Antenna; slender and 

 a little longer than the body ; 

 black, often dull ferruginous 

 beneath, but never clear red or 

 testaceous. Thorax black; of 

 2 often with only a small cal- 

 losity before the radix, but 

 more usually with subhamate 

 lines before and callosities be- 

 neath radix and a centrally 

 interrupted metathoracic fas- 

 cia, more or less tiavous ; d" 

 with imrt or whole of pro- 

 and meso-sternum,and a small 

 mark on mesopleurte, also 

 tiavous. Sciitelhim with a basal 

 dot on either side, its apex, a 

 dot or line on the postscu- 

 tellum, and often the freni 



Fig. 51. — rinjtodicetus cor/jphcsus, Grav. 



narrowly, tiavous. Abdomen shining, with all, or only the apical 

 segments, or none of them, Avith narrow and obsolete glaucous 

 margins ; basal segment of c? Jiot more than half as long again as, 

 of 2 "^'ery little longer than, apically ])road, in both sexes ex- 

 planate towards the apex, not parallel-sided nor basally exphmate; 

 c^ with second and third segments quadrate and th(; fourth, Hke 

 the second and following of $ , transverse ; ^S valvule exserted ; 

 abdomen 4 millim., terebra 21 millim. Ler/s red ; coxa? black with 

 the hind pair of 2 usually mainly red, J sometimes with the anterior 



