Lo 
J 
ree 
RHYNCHOPHORA. [ Dorytomus, 
B. Rostrum in part pubescent, shorter and 
thicker; form broider . . . . . . OD. AFFINIS, Payk. 
2. Anterior margin of prosternum deeply 
emarginate in middle, the emargination 
being sometimes almost hidden by the 
pubescence which fills it; elytra without 
small prominences before apex. 
A. Head red; rostium shiny. 
a. Rostrum regularly curved for its whole 
length, usually red but sometimes 
brown; elytra red, or dusky in front 
and along suture. . . . . . . . D.MELANOPHTHALMUS, Payk. 
V. agnathus, Boh. 
b. Rostrum almost straight to the inser- 
tion of the antenne and then slightly 
curved; insect entirely red . . . . D.PxEcTORALIS, Gyll. 
(rufulus, Bedel.) 
B. Head black ; rostrum dull, rather stout, 
usually black. 
a. Thorax plainly longer than broad ; 
body behind thorax slender, scarcely 
broader than base of thorax . . . . D.sauicinus, Gyll. 
b. Thorax slightly transverse or about as 
long as broad; body behind thorax 
broader, plainly broader than base of 
thorax. 
a*, Rostrum distinctly channelled ; 
thorax rather longer ; colour of elytra 
lighters =) Ma deals -tP Set 
b*¥. Rostrum not channelled; thorax 
slightly shorter; colour of elytra 
dbase a 6 “og “A aR - . D. MaAsAtis, Payk. 
D. saticis, Walt. 
D. vorax, F. (Jongimanus, Forst.), _Pitchy, with uneven ashy tomen- 
tose pubescence, elytra variegated with ferruginous and black, thorax 
often more or less ferruginous ; head small, punctured, rostrum long, 
strongly curved, shining black, striated ; antenne red with club often 
darker ; thorax transverse, strongly constricted before apex, with the 
sides rounded, rather thickly pubescent, closely and distinctly punctured ; 
elytra with plain punctured striz, interstices broad ; prosternum broad 
between the anterior coxe ; abdomen with sides and apex ferruginous ; 
legs ferruginous or more or less pitchy, femora, except apex, and more 
or less of tibiee, often darker; size variable. L. 43-7} mm. 
Male with the rostrum much longer, and the antenne inserted 
further towards its apex, and the anterior legs slender and very elon- 
gate. 
Female with the rostrum and anterior legs comparatively short. 
On poplars and aspens ; often found hiding in the chinks of the bark in numbers 
in late autumn and winter ; local, in the London and southern districts, but common 
where it occurs; Coombe Wood; Tooting ; Dover; Glanvilles Wootton (common) ; 
Exeter; widely distributed in the Midlands; Lincoln, abundant in cracks of willow 
bark near a row of aspens to the south of the town; Manchester district, general in 
decayed poplars; Scarborough ; much less common in the north; Northumberland 
