British Insects: the Families of Hymenoptera

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L. Watson and M. J. Dallwitz

Megaspilidae

~Ceraphronidae.

Head. Antennal segments 9–11. Antennae inserted below the eyes; geniculate.

Thorax. Pronotum long, extending back to the tegulae. Cenchri absent. Wings present. Fore-wings with a conspicuous pterostigma; with very reduced venation (cf. Ceraphronidae?); combining greatly reduced venation with a conspicuous, blind-ending stigmal vein. Closed fore-wing cells 0. Submarginal cells 0. Discoidal cells 0. Hind-wings without closed cells. Hind tibiae without specialised spurs.

Abdomen. The abdomen with a marked basal constriction. The ‘waist’ simple. Ovipositor of females adapted for piercing.

Larvae. Larvae legless or the legs vestigial; parasitic on hosts selected by the mother.

British representation. Species in Britain about 65; Conostigmus, Dendrocerus, Lagynodes, Megaspilus and Trichosteresis.

Classification. Suborder Apocrita; Series Parasitica; Superfamily Ceraphronoidea.

Illustrations. • Dendrocerus halidayi (Curtis) (B. Ent. 249). • Dendrocerus halidayi (detail: B. Ent. 249). • Dendrocerus halidayi (dissections: B. Ent. 249). • Dendrocerus halidayi: B. Ent. 249, legend+text. • Dendrocerus halidayi: B. Ent. 249, text cont..


To view illustrations with legends giving names in current use, go to the interactive key. This also offers full and partial descriptions, diagnostic descriptions, differences and similarities between taxa, lists of taxa exhibiting or lacking specified attributes, and distributions of character states within any set of taxa, as well as source references and other relevant material.

Cite this publication as: ‘Watson, L., and Dallwitz, M.J. 2003 onwards. British insects: the families of Hymenoptera. Version: 16th July 2011. http://delta-intkey.com’.

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