Tetrastichus halidayi (Graham, 1961)

Hansson, Christer & Schmidt, Stefan, 2020, A revision of European species of the genus Tetrastichus Haliday (Hymenoptera: Eulophidae) using integrative taxonomy, Biodiversity Data Journal 8, pp. 59177-59177 : 59177

Tetrastichus halidayi (Graham, 1961)

Aprostocetus halidayi Graham 1961:5-8. Holotype ♀ in OUMNH, examined (Fig. 66). Transferred to Tetrastichus by Domenichini 1966:94.

Description

See Graham (1961).

Diagnosis

Mouth opening very wide, 2.0-2.2 × malar space; mandibles very large, with outer tooth falcate and separated by a wide gap from the two small inner teeth, which are subacute and closely approximated; female gaster relatively long, 1.8 × as long as wide with ovipositor sheaths protruding beyond apex of Gt7.

Distribution

(Former) Czechoslovakia, Germany, Ireland, Norway, Sweden, United Kingdom ( Graham 1961), Russia and Switzerland (new records).

Ecology

Host

Agropus ahrensi Germar ( Coleoptera : Chrysomelidae ) ( Graham 1991).

Material examined

Type material: holotype ♀ (OUMNH). Additional material (219♀ 57♂): Germany 2♂ (UCRC), Russia 8♀ (MZLU), Sweden 197♀ 51♂ (MZLU, NHM, NHRS, ZSM), Switzerland 1♀ (ZSM), United Kingdom 13♀ 4♂ (NHM).