Vanhornia leileri, Hedqvist, 1976

Abe, Junta, Yamagishi, Kenzo & Konishi, Kazuhiko, 2024, Review of the family Vanhorniidae (Hymenoptera: Proctotrupoidea), with the description of two new species, Zootaxa 5507 (3), pp. 427-438 : 433

Vamhornia leileri Hedqvist, 1976 ( Figs. 4A–F )

Vanhornia leileri Hedqvist, 1976: 315–316 . Holotype (examined): female; type locality: Sӧdermanland, Sweden.

Diagnosis. Frontal transverse carina present; apical margin of labrum straight. Scutoscutellar sulcus with 4–6 foveae; mesodiscrimen with about 10 strong foveae; transverse carina on dorsal part of propodeum complete. Vein Rs+M connected to Cu. Syntergite with longitudinal ridges, reaching to 0.7–0.8 length of syntergite; antero-dorsal margin of syntergite almost straight.

Holotype. Female. Sdm, Tullgarn, 27/7 1971, T. E. Leiler: Vanhornia leileri K. J. Hedqist det. 1976. NHRS-HEVA 000002533 ( NRM).

Non-types. France: 1m, Picardie, 02600 St-Pierre-Aigle, Chafosse, Piége , MT, 12–19 VI 2011, Claire Villemant rec. ( MNHN) .

Japan: [Hokkaido] 1f, Kamikawa-gun, Kamikawa-cho, Sounkyo , 43.642°N 143.019°E, alt. 820 m, 17 VII 2023, T. Kasuga ( ELKU) ; 2f, Sapporo City, Toyohira-ku , Nishioka-yusuichi, MT, 12 VII –1 VIII 2015, Teruaki Ban ( KPMNH) ; 1f (24–31 VII 2009) and 1f (13–20 VII 2010), Sapporo , Hitsujigaoka, 43°00’09” N 141°24’56” E, MT, K. Konishi ( ELKU); 1f (13 VII 2015) and 1f (10 VIII 2015), Sapporo-shi, Chuo-ku, Maruyama-genshirin, 43.048N, 141.313E, Namiki Kikuchi ( SEHU) ; 1f, Sapporo-shi, Soranuma-dake , 42°54’ N 141°16’E, MT, 4–27 VII 2007, A Ueda ( SEHU) ; 1f, Oketo Town, Tsunemoto , 43.6050N 143.3440E, 3 VIII 2013, R. Matsumoto ( OMNH) .

Host. Hypocoelus cariniceps ( Eucnemidae ) ( Hedqvist 1976).

Distribution. France (new record with specimen data), Germany? (Baur et al 2010), Japan ( Timokhov & Belokobylskij 2020), Netherlands (Belgers et al. 2020), Russia ( Kozlov 1998), Sweden ( Hedqvist 1976), Switzerland ( Artmann-Graf 2016).

Remarks. The records from France and Germany reported by Baur et al. (2010) are without specimen data. We newly record this species from France with specimen data. The specimen from Germany needs to be re-examined.

The following morphological variations were observed: head round, upper part of gena 1.1–1.5 times as long as width of eye in lateral view; longitudinal ridges on dorsal part of propodeum weak, sometimes widened posteriorly. The male of this species was described by Timokhov & Belokobylskij (2020). We report that the male antenna has tyloids on F1–6 that form ridges. This character may be useful to distinguish males of this species.

The specimen from Oketo Town, Hokkaido, Japan was collected near logs in the forest ( Fig. 5 ).

Figures

FIGURE 4A–F. Vanhornia leileri (Japan, female). A, lateral habitus; B, frontal view of head; C, dorsal view of mesosoma; D, ventral view of head, prothorax, and mesothorax; E, dorsal view of metasoma; F, ventral view of metasoma. Scale bars: A—2.0 mm, C and E—0.5 mm, B, D, and F—0.2 mm.

FIGURE 5. Logs in the forest in Hokkaido, Japan, where Vanhornia leileri and V. yurii were collected. Photo taken by R. Matsumoto.