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Abstract
Type material of the species of Alloxysta described by Cameron and Fergusson and deposited in the Natural History Museum of London has been revised. Seven species are considered valid: Alloxysta abdera Fergusson, 1986, A. basimacula (Cameron, 1886), A. crassa (Cameron, 1889), A. mullensis (Cameron, 1883), A. piceomaculata (Cameron, 1883), A. pleuralis (Cameron, 1879) and A. semiaperta Fergusson, 1986. A. basimacula, A. crassa, A. maculicollis (Cameron, 1886), A. perplexa (Cameron, 1889) and A. piceomaculata are here removed from synonymy with A. macrophadna (Hartig,1841). A. ruficeps (Cameron, 1883) is removed from synonymy with A. victrix (Westwood, 1833). A. caledonica (Cameron, 1886) and A. perplexa are here synonymized with A. basimacula. A. maculicollis, A. ruficeps and A. ruficollis (Cameron, 1883) are here synonymized with A. castanea (Hartig, 1841). A. ancylocera (Cameron, 1886) was correctly synonymized with A. fuscicornis (Hartig, 1841), A. curvicornis (Cameron, 1883) was correctly synonymized with A. victrix and A. filicornis (Cameron, 1889) was correctly synonymized with A. macrophadna. Complete redescriptions and illustrations are given for valid species. A key for all the Alloxysta species found so far in Great Britain is given.
Highlights
Charipinae are small parasitoid wasps which are hyperparasitic on aphids (Hemiptera: Aphidoidea) via Aphidiinae (Hymenoptera: Ichneumonoidea: Braconidae) and Aphelininae (Hymenoptera: Chalcidoidea: Aphelinidae) and hyperparasitoids of psyllids (Hemiptera: Psylloidea) via Encyrtidae (Hymenoptera: Chalcidoidea)
The type material of this species has been revised and the validity of this synonymy is here confirmed. Following this revision of the Cameron and Fergusson types deposited at the Natural History Museum, London, it was found that many of the synonymies established by Fergusson (1986: 10) were wrong
Seven species were synonymized with A. macrophadna after the revision of the type material; only A. filicornis remains as a valid synonymy, the other six species here being re-assigned as valid or as synonyms of other Cameron species
Summary
Charipinae are small parasitoid wasps which are hyperparasitic on aphids (Hemiptera: Aphidoidea) via Aphidiinae (Hymenoptera: Ichneumonoidea: Braconidae) and Aphelininae (Hymenoptera: Chalcidoidea: Aphelinidae) and hyperparasitoids of psyllids (Hemiptera: Psylloidea) via Encyrtidae (Hymenoptera: Chalcidoidea) They are an important negative influence on the beneficial biological control of primary parasitoids, and so it is necessary to identify them to species level before undertaking any studies of the biological control process. The chaotic status of the taxonomy of Charipinae has led us to study all the type material belonging to this subfamily, especially Alloxysta, since it is the most numerous (111 valid species according to Ferrer-Suay et al 2012a), diverse and widely distributed genus. These specimens are deposited in several institutions distributed around the world, especially in Europe
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