246 LONGICORNIA. [ Pogonocherus. 
POGONOCHERUS, Latreille. 
The members of this genus are small insects with the upper surface 
more or less uneven ; the antenne are about as long as the body, or a 
little longer, and have the fourth joint twice as long as the fifth; the 
thorax has a short spine on each side, and a tuberele on each side of 
disc; the elytra are uneven, and are gradually narrowed to apex, which 
is often mucronate, but sometimes only simply truncate ; the anterior 
cox are a little distant, and the tibie are sparingly pilose; the species 
at present known are twenty-seven in number, and have been chiefly 
found in Europe, North America, and Northern Asia ; one, however, has 
been deseribed from Brazil, and one from New Zealand, so that the 
genus will probably prove to be much more extensive ; three of the nine 
European species are found in Britain ; the larva of P. dentatus is found 
under bark and in the wood of decaying boughs of pear and apple trees ; 
it is less narrowed behind than in LZ. nebulosus, the prothorax being only 
a third part broader than the eighth segment; in most other points it 
appears to agree closely with it. ‘There is considerable difficulty as to 
the synonymy of two of our species, as the names hispidus and pilosus 
have been applied to both by different authors ; to avoid confusion, I 
have adopted the names of Thomson and Fourcroy ; the species them- 
selves are very distinct. 
I. Apex of elytra simply truncate, not mucronate or den- 
UHEC Stork TeMt eer te Sah se Tepito. sv \ae. Wy te ToNh 
II. Apex of elytra mucronate at external angles. 
i. Elytra bidentate at apex, the sutural angle being 
produced into a short blunt tooth or spine; scutellum 
VAST She ee Fp Gch UO) Oe OM or RO Pal oF sae oO P. BIDENTATUsS, Thoms. 
ii. Sutural angle of elytra simple; scutellum dark . . P. DENTATUS, Fourc. 
P. FASCICULATUS, De G. 
P. fasciculatus, De G. (fascicularis, Panz.; hispidus, L.). Some- 
what convex, fuscous, under-side thickly clothed with greyish-white 
pubescence, upper-side brownish variegated with lighter brown and 
whitish pubescence; antenne rather stout, pilose, with the base of the 
joints ferruginous; thorax with a smooth tubercle on each side of disc, 
and a small spine on each side; elytra gradually narrowed from base to 
apex, which is rather broad and not denticulate, with a lunate whitish- 
brown fascia on each towards base, and with distinct raised lines ; 
towards apex there are several black spots of hair; legs dark, with the 
base of femora and tibia and a ring in the middle of the tibie 
ferruginous, tarsi pitchy. L. 6-7 mm. 
Male with the fifth ventral segment of abdomen deeply impressed 
and slightly emarginate ; in the female the fifth segment is not impressed 
and rounded at apex. 
In boughs and twigs of pine and Scotch fir; rare; Scotland, local, Tay, Dee, and 
Moray districts (Rannoch, Braemar, Aviemore) ; Stephens records it from Norwich, 
but this is probably in error, 
