Tetrastichus coeruleus (Nees, 1834)

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 coeruleus (Nees, 1834)

Eulophus coeruleus Nees von Esenbeck 1834:174. Lectotype ♀ in OUMNH, designated by Graham 1961:39-40, examined (Fig. 20). Transferred to Aprostocetus by Graham 1961:39-40 and to Tetrastichus by Graham 1991:238.

Tetrastichus coeruleus Tetrastichus asparagi Crawford 1909 Graham 1961

Description

See Graham (1991).

Diagnosis

Mouth opening very wide, 1.8-2.0 × malar space; body bright metallic blue to bluish-purple; ovipositor does not reach apex of Gt7; male funiculars with short whorled setae, 0.5-0.7 × as long as funicular attached to.

Distribution

France, Germany, Hungary, Italy, The Netherlands, United Kingdom ( Graham 1991); Norway and Sweden (new records).

Ecology

Host

Crioceris asparagi (L.) ( Coleoptera : Chrysomelidae ), emerges from host cocoons, but oviposits in host eggs or larvae ( Van Alphen 1980).

Material examined

Type material: lectotype ♀ of E. coeruleus (OUMNH). Additional material (72♀ 18♂): China 1♀ (UCRC), France 2♀ (GD, NHM), Norway 3♀ 1♂ (NHM), Sweden 63♀ 17♂ (MZLU, NHM, ZSM), United Kingdom 3♀ (NHM).