Forest entomology . ying in thewoods until the bark has decayed and the sapwood dissolved into ablack moist powder. The larvae when full-fed are about an inch inlength, pure white, with a light-brown head. If the larger-sizedspecimens are collected in February and March, and kept in the 1 Vol. iv. p. 231. COLEOPTERA. 57 black material in a moist condition, they will develop into beetlesabout the beginning of April. Fig. 54 is from a photograph of thebeetle. Khagium (Fab.) This is a very common arboreal species in many parts of thecountry. In very warm days in July the beetle may b
Forest entomology . ying in thewoods until the bark has decayed and the sapwood dissolved into ablack moist powder. The larvae when full-fed are about an inch inlength, pure white, with a light-brown head. If the larger-sizedspecimens are collected in February and March, and kept in the 1 Vol. iv. p. 231. COLEOPTERA. 57 black material in a moist condition, they will develop into beetlesabout the beginning of April. Fig. 54 is from a photograph of thebeetle. Khagium (Fab.) This is a very common arboreal species in many parts of thecountry. In very warm days in July the beetle may be seen flyingabout amongst young fir woods, or lodging amongst the leaves ofyoung Scots pines. During the summer months it may be found in theearly morning, amongst the freshly cut sawdust, in the ] >it underneaththe circular saw, where a portable sawmill is erected in a fir the winter and spring months the perfect beetles may also befound, together with many specimens of the larvae, in old fir roots,. Fig. 54.—Rhagium inquisitor Fig. 55.—Rhagiura bifasciatum (natural size). (natural size). and more especially in roots where the trees have been blown once found quite a colony in such a place in November, and as thebeetles were fully developed, it is possible that they pass the winterin the perfect stage, after changing from the pupal stage in autumn,as so large a colony in one root could not be accounted for on thelines of hibernation. Another very happy hunting-ground for thisspecies is in dead Scots pines which have been left standing until theircondition is simply a mass of dry dust. I found quite a colony ofthe perfect beetles issuing from trees of this class on May 19, 1905,at Lyham, in Northumberland. After the exit from such trees, thestem shows so many holes that it looks like having been severelyshot at with small bullets. As a rule, it cannot be considered aninjurious insect, though in Cheshire I once found an oak log consider-ably destroyed
Size: 2400px × 1041px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookpublisheredinburghwblackwoo
