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Edinburgh, United Kingdom

A key to the species of Homolobus found or likely to be found in Britain is provided, and biological and distribution data for all Palaearctic species in the National Museums of Scotland are summarised. Some previous British records are discussed.

Distributional, phenological and, in many cases, rearing data are given for 81 species of particular groups of western Palaearctic Phygadeuontini (Hymenoptera: Ichneumonidae, Cryptinae) based on about 2860 specimens in the National Museums of Scotland. Nineteen species are recorded from Britain for the first time.

Two hundred and ninety-eight rearing records and 87 larvae and puparia were obtained of seven species of Palloptera Fallén (Diptera, Pallopteridae), mainly in Scotland during 2012-2013. The third stage larva and puparium of each species were assessed morphologically and development sites and feeding modes investigated by rearing, observation and feeding tests. Early stages appear to be distinguished by the swollen, apico-lateral margins of the prothorax which are coated in vestiture and a poorly developed anal lobe with few spicules. Individual pallopteran species are separated by features of the head skeleton, locomotory spicules and the posterior respiratory organs. Five species can be distinguished by unique character states. Observations and feeding tests suggest that the frequently cited attribute of zoophagy is accidental and that saprophagy is the primary larval feeding mode with autumn/winter as the main period of development. Food plants were confirmed for flowerhead and stem developing species and rain is important for maintaining biofilms on which larvae feed. Due to difficulties in capturing adults, especially males, the distribution and abundance of many pallopteran species is probably underestimated. Better informed estimates are possible if early stages are included in biodiversity assessments. To facilitate this for the species investigated, a key to the third stage larva and puparium along with details on finding them, is provided. Copyright © 2014 Magnolia Press.

Homolobus (Phylacter) meridionalis is recorded parasitizing the noctuid Dryobota labecula (Esper, 1788) feeding in spring on Quercus in southern France. The adult parasitoid emerged in autumn; evidence is presented to suggest that it is a bivoltine species, likely to parasitize low-feeding noctuids in its overwintering generation. Notes to separate the parasitoid from the closely related H. (P.) annulicomis are given.

Robertson D.M.,41 Claremont Road | Shaw M.R.,National Museums of Scotland
Entomologist's Gazette | Year: 2012

Rearing records are given for some 73 species of Tachinidae, mainly from Lepidoptera. While most of the material is British there are numerous rearings from western Europe and from seldom-collected Zygaena species from further afield.

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