286 



CORYLACEJE. 



punetion for the omission of the rest, as Mr. Westwood 

 has already, in the " Arboretum Britannicum," given an 

 extensive list and interesting account of the Oak-feeding 

 insects. Of those which feed upon the wood chiefly in 

 the larva state, are the caterpillars of the goat moth 

 (Cossus Ugniperda), and wood-leopard moth (Zeuzera 

 aesculi), also the grubs of several of the Capricorn beetles, 

 among which are Prionus coriarius and Clytus arcuatus. 

 The Elater sanguineus, both in the larva and perfect state, 

 is found in rotten Oak stumps, and the grub of the great 

 stagbeetle, Lucanus cervus, is a consumer of the like matter. 

 TricMus variabilis, a very rare British insect, occasionally 

 met with in the New Forest, is also an Oakwood eater, 

 as well as several species of Lymexylon, which are par- 

 ticularly destructive to Oak timber. Amongst the leaf- 

 feeding species a long list belongs to the lepidopterous 

 order, though the caterpillar of the purple hair-streak 

 (Thecla quercus), is the only one belonging to the butter- 

 flies. Of the Sphingidee, the caterpillar of the beautiful 

 lime hawk moth (Smerinthus tilice), is occasionally found 

 upon the Oak, and amongst the Bombyces there are many 

 which feed upon it exclusively, such as the different species 

 of Chaonia, Perridea serrata, Spc, and others only occa- 

 sionally, as Lasiocampa quercus, and roboris, Saturnia 

 pavonia, and Tau, Pygcera bucepliala, fyc. Several of 

 the Lithosiidse are also Oak leaf-eaters, and amongst the 

 numerous Noctuidse are several species of Orthosia, Glaa, 

 Xylina, and Xantliia, also the beautiful Miselia aprilina, 

 Merveil du jour, the caterpillar, pupa, and imago of which 

 are represented at page 288. Three species of Catocala are 

 exclusively Oak-feeders, and another, Catocala fraxini, one 

 of the finest of the genus, is occasionally found upon it. Of 

 the Geometrician, Platyptericidae, Pyralidse, Tortricidae, and 



