Hoplismenus rugosus (TISCHBEIN, 1874)

Riedel, Matthias, 2021, The Western Palaearctic species of the subtribe Hoplismenina HEINRICH (Hymenoptera, Ichneumonidae, Ichneumoninae), Linzer biologische Beiträge 53 (2), pp. 901-926 : 912-913

Hoplismenus rugosus (TISCHBEIN, 1874) ( Rhysaspis ), stat. rev. (figs 6, 11, 16, 24, 31)

Type lost, identification due to the description of CLÉMENT (1927).

syn. Hoplismenus rugosus var. obscuriventris PIC, 1908

H o l o t y p e: (♁) La Grave; type; H. rugosus v. obscuriventris PIC (Paris) , synonymized by HILPERT et al. (1993), type not studied.

syn. Rhysaspis kriechbaumeri CLEMENT, 1927

L e c t o t y p e: (♀) Cotype; Tegernsee 27.7.54 Freud; Rhysapasis kriechb. CLÉMENT ( ZSM), type studied and herewith designated .

syn. nov. Hoplismenus cornix KRIECHBAUMER, 1890

H o l o t y p e: (♁) Dfstr. 1879 Aflenz; Hopl. cornix m. ♁ n. sp. det. Kriechbaumer; [red] Hepiopelmus cornix KR. ♁ Holotype JF Aubert 1980 (Vienna), type studied.

M a t e r i a l e x a m i n e d: 2♀♀, 24♁♁ from Austria, Belgium, Croatia, France, Germany.

D e s c r i p t i o n: ♀: Body length 11-12 mm. Flagellum with 40-43 flagellomeres; 1 st flagellomere 3.2-3.4× and 2 nd flagellomere 2.5-2.7× longer than wide, FI 0.81-0.88; widest flagellomere 1.2× wider than long. Temple strongly and almost linearly narrowed behind eye. OED 1.3-1.5× ocellar diameter. Frons finely and transversely rugose. Face and clypeus rugose-punctate. Gena distinctly concave ventrally, 0.70-0.75× as wide as eye. MI 1.3-1.5. Genal carina reaching hypostomal carina at 90°, hypostomal carina elevated (about as wide as distal maxillary palp). Mesosoma covered with short grey hairs. Side of pronotum rugose-punctate dorsally, longitudinally rugose ventrally. Notaulus distinctly impressed in frontal 0.5 of mesoscutum. Lateral lobe of mesoscutum rugose-punctate, dull. Mesopleuron including speculum coarsely rugose-punctate, dull. Sternaulus impressed in frontal 0.5 of mesopleuron. Epicnemial carina distinctly elevated behind fore coxa. Juxtacoxal carina present. Scutellum pyramidal, punctate, with lateral carina in basal 0.3-0.5. Area superomedia rectangular, about as long as wide, rugose; anterior transverse carina reaching its middle. Apophysis distinct, about as long as basally wide. Area petiolaris coarsely and transversely rugose. Coxae rugose-punctate. Hind femur 5.5-5.9× longer than wide. Metasoma oxypygous. Postpetiolus moderately widened, 0.60-0.72× as wide as distance between apophyses, lateral field 0.9-1.2× as wide as median field, median field rugose, with few punctures apically. Gastrocoelus distinctly impressed, with ridges. Thyridium slightly oblique, 0.7× as wide as the interval. 2 nd tergite 1.0-1.3× and 3 rd tergite 1.6-1.8× wider than long. 2 nd tergite coarsely rugose-punctate, 3 rd tergite densely and rather superficially punctate, with microsulpture; 4 th tergite with very superficially punctures, almost smooth. Ovipositor sheath 0.32-

0.34× as long as hind metatarsus. Color: black. Flagellomeres 9-14/15, spot on frontal orbit, spot on scutellum yellow. 1st

tergite black, following tergites red. Legs reddish-brown, often hind femur, hind tibia and mid and hind tarsi ± infuscate. Pterostigma brown to blackish. ♁: Body length 13-14 mm. Flagellum with 41-42 flagellomeres; 1st flagellomere 3.0×

and 2 nd flagellomere 2.5× longer than wide, FI 0.80-0.83. Tyloids on flagellomeres 2/4- 23/25, long oval, maximally 0.7× as long as flagellomere. Temple almost linearly narrowed behind eye. OED 1.0× ocellar diameter. Frons finely and transversely rugose. Face and clypeus rugose-punctate. MI 1.6. Gena concave ventrally, 0.85× as wide as eye. Side of pronotum rugose-punctate dorsally, longitudinally rugose ventrally. Notaulus impressed in frontal 0.3-0.5 of mesoscutum. Scutellum distinctly pyramidal, triangular in profile, with complete lateral carina, without transverse carina or ridge on top. Area superomedia wider than long, hexagonal, coarsely rugose; anterior transverse carina slightly basad its middle. Apophysis slightly longer than basally wide. Hind femur 5.3- 5.6× longer than wide. Postpetiolus moderately widened, 0.7× as wide as distance between apophyses, lateral field as wide as median field, median field with few punctures, mainly smooth. Gastrocoelus impressed, with ridges. Thyridium slightly oblique, 0.4× as wide as the interval. 2 nd tergite 1.15× wider than long. 2 nd tergite coarsely rugose-punctate, with some longitudinal rugae medially. 3 rd tergite rugosepunctate basally, punctate apically. 4th tergite punctate, with microsculpture. Color: black. Facial orbit, spot on frontal orbit and usually spot on scutellum yellow. 1st

tergite black, 2 nd to 7 th reddish-brown, partly infuscate centrally. Fore and mid legs brownish, hind leg black. Pterostigma dark brown.

T a x o n o m i c a l r e m a r k: Themonobasic genus Rhysaspis was synonymized with Hoplismenus by TOWNES (1961) and HEINRICH (1962), but re-established as a separate genus by HEINRICH (1975), mainly due to the strongly concave form of ventral genal carina and the elevated ventral epicnemial carina, but the modified form of genal carina is also found in other Hoplismenus species such as H. krapinensis (see figs 11 and 12). He also argued a proposed different biology: in contrast to the Nymphalid parasitizing Hoplismenus species, H. rugosus was found to parasitize also other lepidopterous families, e.g. Pieridae und Satyridae . But as confirmed in this study, some Hoplismenus species, such as H. pica , also have a wider host range ( Nymphalidae and Erebidae ).

Therefore, I accept the synonymizing of Hoplismenus and Rhysaspis here. I also suppose that a separation of the monobasic Rhysaspis from Hoplismenus would probably let the latter genus as a paraphyletic assemblage of species.

H o s t s: Lasiommata maera (LINNAEUS, 1758) (Lep., Nymphalidae ) ( CLÉMENT 1927).