Torymus rugosus Matsuo 2020, n. sp.
Creators: name: Matsuo, Kazunori
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Torymidae
Torymus
Torymus rugosus

description: Torymus rugosus Matsuo n. sp.
Figs 3d, 7 a–b, 19a–d, 25c
Etymology. The specific name, rugosus, is derived from the associated plant of this species.
Type material. Holotype: ♀ (BLKU), emerged on 17 July 2007 from a gall of Dasineura sp. on Rosa rugosa collected by Y. Tazuhara and K. Matsuo on 1 July 2007 from Zenibako, Otaru, Hokkaido, Japan. Paratypes: 7 ♀,
same data as the holotype (BLKU); 1 ♀, emerged on 10 July 2007 from a gall of Dasineura sp. on Rosa rugosa collected by Y. Tazuhara and K. Matsuo on 1 July 2007 from Hama, Ishikari, Hokkaido (BLKU); 1 ♂, emerged on 11 July 2007 from a gall of Dasineura sp. on Rosa rugosa collected by Y. Tazuhara and K. Matsuo on 1 July 2007 from Hama, Ishikari, Hokkaido (BLKU); 2 ♂, emerged on 13 July 2007 from a gall of Dasineura sp. on Rosa rugosa collected by Y. Tazuhara and K. Matsuo on 1 July 2007 from Zenibako, Otaru, Hokkaido (BLKU); 2 ♀ and 1 ♂, emerged on 15 July 2007 from a gall of Dasineura sp. on Rosa rugosa collected by Y. Tazuhara and K. Matsuo on 1 July 2007 from Hama, Ishikari, Hokkaido (BLKU); 1 ♂, emerged on 17 October 2008 from a gall of Dasineura sp. on Rosa rugosa collected by K. Matsuo on 8 October 2008 from Mt. Moiwa, Sapporo, Hokkaido (BLKU); 1 ♀, emerged on 28 October 2008 from a gall of Diplolepis sp. on Rosa rugosa collected by Y. Abe and K. Matsuo on 8 October 2008 from Mt. Moiwa, Sapporo, Hokkaido (BLKU).
Description. Female. Body length excluding ovipositor sheath 2.9–3.8 mm. Head bluish green. Scape brownish yellow with apical tip darker; pedicel black with a metallic tinge; flagellomeres black. Mesosoma bluish green. Fore wing hyaline. Fore coxa concolorous with mesosoma in basal half; mid and hind coxae concolorous with mesosoma; all femora and tibiae yellowish brown; claws brown. Metasoma bluish green with bluish tint (Fig. 3d).
Head 2.0–2.2× as wide as long in dorsal view; temple 0.2× as long as dorsal length of eye; POL 2.3–2.6× OOL; OOL 1.0–1.2× OD. Head 1.2–1.3× as wide as high in frontal view (Fig. 19a); eyes separated by their height; malar space 0.3× height of eye; mouth 2.0–2.3× malar space; clypeus with apical margin produced, rounded. Antenna not clearly clavate (Fig. 7a); scape 0.6–0.7× as long as height of eye, just reaching ventral margin of anterior ocellus; combined length of pedicel and flagellum 1.3–1.4× width of head; pedicel 1.5–1.7× as long as wide; anellus 1.0–1.2× as wide as long; F1 1.3–1.6× as long as wide, as long as pedicel; F2–F5 1.3–1.5× longer than wide; F6–F7 quadrate; each funicular segment bearing longitudinal sensilla arranged in two rows; C3 with a small tuft of micropilosity beneath.
Mesosoma 1.7–1.9× as long as wide; mesoscutum (Fig. 19b) with small piliferous punctures; sculpture on me- soscutum in anterior half transversely reticulate; notaulus shallow; scutellum (Fig. 19c) 1.2–1.4× as long as wide, sculptured as posterior part of mesoscutum; dorsellum without median carina; propodeum (Fig. 19d) with superficial striae, polished medially; lower mesepimeron 1.4–1.5× as long as wide. Fore wing 2.3–2.5× as long as wide (Fig. 25c); costal cell 8.6–9.5× as long as wide, on upper surface with a setal row in distal half, on lower surface with a complete setal row and scattered setae apically; basal cell closed, with a few setae below submarginal vein; cubital setal line present; basal setal line present; speculum narrowly opened below; relative lengths of marginal vein: postmarginal vein: stigmal vein=9.5: 2.5: 1.0. Hind coxa stout, 1.7–1.9× as long as wide, with dorsal carina basally; dorsal surface of hind coxa with short setae in basal half; hind femur 3.8–4.0× as long as wide; hind tibia with longer spur 1.2–1.5× as long as width of hind tibia, 0.4–0.5× length of basitarsus; shorter spur 0.6–0.7× length of longer spur.
Metasoma as long as mesosoma; posterior margin of metasomal tergum five incised; tip of hypopygium situated at 0.7 length of metasoma; ovipositor sheath as long as metasoma, 1.7–1.9× as long as hind tibia.
Male. Differs from female as follows. Body length 2.3–2.7 mm. POL 2.0–2.3× OOL. Antenna stouter than that of female (Fig. 7b); scape bluish green, not reaching anterior ocellus; pedicel 1.2–1.3× as long as wide; anellus transverse, twice as wide as long; F1 1.0–1.1× as long as wide; F2–F7 0.9–1.0× as long as wide; longitudinal sensilla on each funicular segment arranged in one row. Lower mesepimeron twice as long as wide. Relative lengths of marginal vein: postmarginal vein: stigmal vein=8.0: 2.2: 1.0. Hind femur and hind tibia darkened medially with metallic reflections. Metasoma with coppery tint; posterior margin of metasomal tergum five entire.
Distribution. Japan (Hokkaido).
Host information. Torymus rugosus is an ectoparasitoid of Dasineura sp. (Diptera: Cecidomyiidae) (gall photo: fig. 27e, C–327 of Yukawa & Masuda 1996) on Rosa rugosa Thunb. (Rosaceae) and Diplolepis sp. (Hymenoptera: Cynipidae) on R. rugosa (gall photo: fig. 27f, C–328 of Yukawa & Masuda 1996).
Remarks. Females of T. rugosus are similar to T. confinis (Walker), a European species (Graham & Gijswijt 1998), by having the following shared features: malar space 0.3× height of eye; mouth 2.0–2.3× malar space; scape reaching ventral margin of anterior ocellus; sculpture on mesoscutum in anterior half transversely reticulate; notaulus shallow; scutellum sculptured as posterior part of mesoscutum; dorsellum without median carina; propodeum with superficial striae, polished medially; costal cell on upper surface with a setal row in distal half, on lower surface with a complete setal row and scattered setae apically; basal cell closed, with a few setae below submarginal vein; speculum narrowly opened below; hind coxa with dorsal carina basally; dorsal surface of hind coxa with setae in basal half; hind tibia with longer spur 1.2–1.5× as long as width of hind tibia, 0.4–0.5× length of basitarsus. However, females of T. rugosus can be distinguished from T. confinis by having the following features: anellus 1.0–1.2× as wide as long (distinctly transverse in T. confinis); F1–F5 longer than wide (quadrate in T. confinis); each funicular segment bearing longitudinal sensilla arranged in two rows (one row in T. confinis).
description: Published as part of Matsuo, Kazunori, 2020, A revision of Japanese Torymus Dalman (Hymenoptera: Torymidae), pp. 401-441 in Zootaxa 4758 (3) on pages 428-430, DOI: 10.11646/zootaxa.4758.3.1, http://zenodo.org/record/3734584