INSECTS 



SCARABAEIDAE (continued) 



Rhizotrogus ochraceus, Knoch. 

 Taken by Lamb on the 

 north coast of Cornwall in 

 1902 and again in 1903. 

 Previous to that time it 

 had been represented in 

 British collections only by 

 two or three specimens. 



Melolontha vulgaris, F. The 

 common cockchafer is a 

 serious farm and garden pest 

 throughout the county in 

 the larval stage, attacking 

 more especially spring corn, 

 grass and strawberries, but 

 occasionally doing mischief 

 to swedes, mangels, potatoes, 

 kitchen garden produce and 

 herbaceous borders. By re- 

 moving the bark in patches 

 the insect itself does damage 

 at times to young trees, but 

 more especially to larch, 

 spruce, and Pints insignis 



Phyllopertha horticola, L. In the 

 larval stage this insect is des- 

 tructive to grass, dredge corn, 

 and young seeds, particularly 

 in the middle of the county, 

 and the mature insect does 

 frequent damage to the leaf- 

 age of fruit trees and to roses. 

 A few years ago a long vel- 

 vety-black grub was found in 

 the school gardens attacking 

 the larva of P. horticola just 

 behind the head and steadily 

 devouring it. By good for- 

 tune the grub was hatched 

 out in a breeding cage and 

 proved to be Telephorus 

 bicolor. S. 



Anomala frischii, F. Two speci- 

 mens taken between Perran- 

 forth and Netvquay ; reported 

 from Looe 



Cetonia aurata, L. Fairly fre- 

 quent on high land near 

 the sea in the Land's End 

 and Lizard peninsula ; St. 

 Mary's, Stilly 



BUPRESTIDAE 



Aphanisticus pusillus, Ol. Re- 

 ported by Thomas from 

 Looe 



THROSCIDAE 



Throscus dermestoides, L. 



ELATERIDAE 



Lacon murinus, L. 



Cryptohypnus riparius, F. 



quadripustulatus, F. On the 

 right bank of the Fowcy about 

 half a mile above Lostwithiel 



ELATERIDAE (continued) 



Elater balteatus, L. 

 Athous niger, L. 



longicollis, OI. Camelford ; 



Penzance 



haemorrhoidalis, F. Did 



serious damage to the oats 

 of the Penzance district in 

 1902 



vittatus, F. 

 Limonius cylindricus, Payk. 



minutus, L. 



Sericosomus brunneus, L. Very 

 scarce in the Land's End 

 district 



Adrastus limbatus, F. 



Agriotes sputator, L. S. 



obscurus, L. 



lineatus, L. S. 

 sobrinus, Kies 



pallidulus, 111. S. 



The larvae of Agriotes sputator, 

 A. obscurus, and A. lineatus, collec- 

 tively known as the wireworm, do 

 an enormous amount of damage 

 annually in every district, but 

 especially about Liskcard. These 

 hard, smooth, tough, shining, red- 

 dish or yellowish-brown, slender 

 cylindrical larvae are by far the 

 most destructive pests in the county 

 both on field and on garden produce 

 and there is practically no crop that 

 escapes their attention. The long- 

 period grass leys that are much in 

 favour throughout the county are 

 in part responsible for the preva- 

 lence of this insect. Firming the 

 land usually limits the extent of 

 its depredations, but there is no 

 general effective remedy. Many 

 birds, however, including the star- 

 ling, rook, and various gulls, devour 

 the wireworm in large numbers, 

 and special means can be occasion- 

 ally devised for giving them an 

 opportunity of clearing the land 

 of this disastrous pest 



Dolopius marginatus, L. 



Corymbites cupreus, F. Taken in 

 1902 by E. C. H. Davies, 

 near Padstovi, and by A. G. 

 Peter, near Launceston 



tessellatus, F. 



quercus, Gyll. 



holosericeus, F. Altarnun ; on 



the moors above Liskeard ; 

 St. Mary's, Scilly 



aeneus, L. Altarnun ; Camel- 



ford 

 Campylus lineans, L. 



DASCILLIDAE 



Dascillus cervinus, L. 

 Helodes minuta, L. 



marginata, F. 



197 



DASCILLIDAE (continued) 



Microcara livida, F. 

 Cyphon coarctatus, Payk. 



nitidulus, Thorns. 



variabilis, Thunb. S. 



pallidulus, Boh. 



padi, L. Penzance district 



(Marquand). 



Scirtes hemisphaericus, L. Marshy 

 ground, Dotvndtrry (Keys) ; 

 Bishop's Wood, Truro 



MALACODERMIDAE 



Lampyris noctiluca, L. 

 Podabrus alpinus, Payk. 

 Telephorus rusticus, Fall. 



lividus, L. 



pellucidus, F. 



nigricans, Mull. 



bicolor, F. 



oralis, Germ. 



flavilabris, Fall. 

 Rhagonycha unicolor, Curt. Scarce 



in the valley of the Lynher; 

 Marazion 



fulva, Scop. 



testacea, L. 



limbata, Thorns. 

 - pallida, F. 



Malthinus punctatus, Fourc. 



fasciatus, Ol. 



balteatus, SufF. 



frontalis, Marsh. 

 Malthodes marginatus, Latr. 

 - dispar, Germ. 



minimus, L. 



atomus, Thorns. Millook. 

 Malachius aeneus, L. Par. 



bipustulatus, L. 



marginellus, Ol. 

 Anthocomus fasciatus, L. 

 Dasytes flavipes, F. S. 



aerosus, Kies. 



Psilothrix nobilis, 111. On dande- 

 lions just above high-water 

 mark, Newquay 



Dolichosoma lineare, Rossi 



CLERIDAE 



Tillus elongatus, L. Liskeard 

 Necrobia ruficollis, F. 



violacea, L. 



rufipes, De G. 



PTINIDAE 



Ptinus scxpunctatus, Panz. Looe 



fur, L. 



Niptus hololeucus, Fa'd. 



crenatus, F. Land's End 



(Isabell) 



Hedobia imperialis, L. 

 Priobium castaneum, F. Dead 



ash, Rome ; decaying elm, 



Truro 



