. British journal of entomology and natural history. Natural history; Entomology. 86 BR. J. ENT. NAT. HIST., 2: 1989. Windsor Great Park, , showing the usual fate of a fallen oak boughâa heap of logs and a smouldering fire. Photo: J. A. Owen Mr P. Waring showed some larvae of the dingy footman, Eilema griseola Hiibn. found amongst piles of cut fen vegetation at Woodwalton Fen during an unsuccessful search for larvae of the marsh moth, Athetis pallustris Hiibn. He also showed a series of colour transparencies on the conservation of the Essex emerald, Thetidia smaragdaria F., a species p
. British journal of entomology and natural history. Natural history; Entomology. 86 BR. J. ENT. NAT. HIST., 2: 1989. Windsor Great Park, , showing the usual fate of a fallen oak boughâa heap of logs and a smouldering fire. Photo: J. A. Owen Mr P. Waring showed some larvae of the dingy footman, Eilema griseola Hiibn. found amongst piles of cut fen vegetation at Woodwalton Fen during an unsuccessful search for larvae of the marsh moth, Athetis pallustris Hiibn. He also showed a series of colour transparencies on the conservation of the Essex emerald, Thetidia smaragdaria F., a species protected under the Wildlife and Countryside Act. During 1987 and 1988 the NCC has surveyed likely places on the Kent and Essex coast looking for larvae. Eleven larvae were found in October 1987 at only one site and these were taken into captivity and reared individually on southernwood {Artemisia abrotanum). The larvae adorn their bodies with hairs and other fragments taken from the food plant. It was noted that at ecdysis the caterpillars would pick these fragments off their old skins and transfer them onto the new skin. The larvae eventually produced seven adults from which two pairings were achieved. One hundred and thirty-three small larvae are now overwintering and it is hoped that the experience gained from this project will enable the Essex emerald to be reintroduced into its former sites [see comment below]. Comments on the exhibits The President referred to the continuing difficulty in getting the estate workers at Windsor Great Park to allow at least some of the fallen timber to remain. The NCC have had discussions on this point with the Crown Estates but it remained an unresolved problem. He welcomed the encouraging results of the Essex emerald breeding project and said that there would be a display on this work at the Annual Exhibition. Larvae of the Essex emerald were being raised on Artemisia abrotanum rather than the usual host plant, sea wormwood (A. maritima),
Size: 1912px × 1307px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, booksubjectentomology, booksubjectnaturalhistor
