Tetrastichus atratulus (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 atratulus (Nees, 1834)

Eulophus atratulus Nees von Esenbeck 1834:180. Neotype ♀ in NHM, designated by Graham 1991:264, examined (Fig. 5). Combined to Tetrastichus by Domenichini 1966:194.

Tetrastichus puncticoxae Kurdjumov 1913:253, 255. Holotype ♀ in Leningrad, not examined. Synonymised with T. atratulus by Graham 1991:264.

Description

See Graham 1991.

Diagnosis

Female antenna with length of pedicel+flagellum 1.15-1.35 × width of mesoscutum, F1 2.0-2.5 ×, F2 1.6-2.0 × and clava (incl. spicule) 2.4-3.0 × as long as wide; submedian grooves of mesoscutellum nearer to sublateral grooves than to each other; apical part of ovipositor sheaths does not reach apex of Gt7. Similar to T. dasyops , but with longer flagellum and shorter ovipositor sheaths. Male with relatively short hairs on eyes, about 0.3 × OD.

Distribution

(Former) Czechoslovakia, France, Germany, Italy, Japan, (former) Yugoslavia, Russia, United Kingdom ( Graham 1991), Sweden ( Hedqvist 2003), Austria and Romania (new records).

Ecology

Host

Ptecticus tenebrifer (Walker) ( Diptera : Stratiomyiidae ) (in Japan) ( Graham 1991).

Material examined

Type material: neotype ♀ (NHM, type no. 5.3627). Additional material (292♀ 55♂): Austria 2♀ (MZLU, UCRC), France 51♀ 2♂ (CIRAD, NHM, ZSM), Germany 10♀ (MZLU, ZSM, UCRC), Italy 10♀2♂ (NHM, UCRC), Romania 132♀ 50♂ (MZLU, NHM, ZSM), Russia 3♀ (UCRC), Sweden 64♀ 1♂ (MZLU, NHM, NHRS, SMTP, ZSM), United Kingdom 20♀ (NHM).

Material examined