Spilopteron mucronatus Lee 2008
Creators: name: Ito, Masato
name: Maeto, Kaoru
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Ichneumonidae
Spilopteron
Spilopteron mucronatus

description: Spilopteron mucronatus Lee, 2008
Figs 2e, 3e, 4e, 5e, 6e, 7 i–j, 8e
Spilopteron mucronatus Lee, 2008 in Lee et al. 2008: 276. Type locality: Korea, Gyeonggi-do Province, Yangpyeong-gun Yongnum-myeon Mt Yongmun.
Spilopteron mucronatus – Yu et al. 2012. — Ito et al. 2012: 445.
Material examined
JAPAN: 1 ♂, Soun-kyo, Kamikawa-cho, Hokkaido Pref., 13 Jul. 2012, M. Ito (LC041302, NIAES); 1 ♀, Mt Teinekanayama, Sapporo city, Hokkaido Pref., 19 Jul. 2012, Y. Nakatani (NSMT); 1 ♀, Rishiri Is., Hokkaido, 15 Jul. 1975, E. Nishida (OMNH); 1 ♀, Mt Hayachinesan, Iwate Pref., 25 Jul.–2 Aug. 1989, M. Sharkey and H. Makihara (NIAES); 1 ♀, Hanase-toge, Sakyo-ku, Kyoto Pref., 23 Jun. 2012, M. Ito (LC041301 NIAES); 1 ♀, Ideno, Mitsuse-mura, Saga Pref., 17 May 1998, R. Matsumoto (OMNH); 3 ♀♀, Mt Hiko-san, Soed-cho, Fukuoka Pref., 15 Jun. 1996, R. Matsumoto (OMNH); 1 ♀, Mt Taterasan, Tsushima Is., Nagasaki Pref., 28 May 1997, N. Takahashi (OMNH); 1 ♂, Kamisaka, Tsushima Is., Nagasaki Pref., 3 Jun. 1996, R. Matsumoto (OMNH).
Differential diagnosis
This species can easily be distinguished from other species of Spilopteron by the ventral convexity of the hind femur, and the distinct sharp projection on S1 (see Ito et al. 2012).
Description
Female (n = 8)
BODY LENGTH. 11.5–15.0 mm.
HEAD. Vertex 0.7–0.9 times as long as maximum length of eye in dorsal view. Frons without a depression between eye and antennal socket in frontal view (Fig. 2e). Clypeus 0.5–0.6 times as long as wide, with two strong lateral projections and a weak median projection (Figs 2e, 3e). Face 0.6 times as long as wide. Length of malar space 0.9–1.0 times as long as basal mandibular width. Ocello-ocular line/lateral ocellar diameter = 2.0–2.1. Postocellar line/lateral ocellar diameter = 1.4–1.6. Antenna with 33–35 flagellomeres; first flagellomere 1.2–1.4 times as long as second flagellomere.
MESOSOMA. Propleuron densely punctate (Fig. 5e). Lateral area of pronotum densely punctate and transversely striate medially (Fig. 5e). Collar densely punctate. Mesoscutum densely punctate. Subalar prominence densely punctate (Fig. 5e). Scutellum strongly and sparsely punctate in dorsal view. Postscutellum flattened in lateral view (Fig. 5e). Metapleuron strongly punctate (Fig. 5e). Propodeum weakly carinate (Fig. 6e). Area externa densely punctate (Fig. 6e). Area basalis polished (Fig. 6e). Area dentipara confluent with area superomedia and transversely carinate (Fig. 6e). Area posteroexterna confluent with area petiolaris and transversely carinate (Fig. 6e). Fore wing length 9.0–12.0 mm. Vein cu-a basad of vein Rs&M (Fig. 4e). Vein rs-m opposite or basad of vein 2m-cu (Fig. 4e). Hind femur 3.1–3.5 times as long as maximum depth in lateral view, with a distinct convexity ventrally. Hind tibia 10.6–12.0 times as long as maximum depth in lateral view. First hind tarsomere 2.5–3.2 times as long as second and 3.0–3.6 times as long as longer hind tibial spur.
METASOMA. T1 2.7–2.9 times as long as maximum width, 2.3–2.4 times as long as T2. T2 0.7–0.8 times as long as maximum width. T1 and T2 weakly and sparsely punctate. T2–T8 weakly and densely punctate. S1 with a distinct sharp projection basally. Ovipositor sheath 2.7–3.0 times as long as hind tibia.
COLOR. Body black (Fig. 5e). Antennal flagellum without a white band, brown apically. Face and postscutellum yellow with black marking medially, but sometimes entirely black except for inner margin of eye. Clypeus, subalar prominence, propodeum, fore and mid legs, hind trochanter, hind trochantellus, apex of hind femur, and apex of T1 yellow. Fore wing with an apical dark mark extending downwards (Fig. 4e).
Male (n = 2; genitalia, n = 2)
Similar to female. Body length 10.0–13.0 mm. Face 0.6–0.7 times as long as wide. Length of malar space 0.8–0.9 times as long as basal mandibular width. Postocellar line/lateral ocellar diameter = 1.4– 1.7. Antenna with 37–42 flagellomeres. Hind femur 3.0–3.1 times as long as maximum depth in lateral view. First hind tarsomere 3.0–3.3 times as long as second. T1 3.1–3.2 times as long as maximum width, 2.0–2.2 times as long as T2. T2 0.8–1.0 times as long as maximum width. Antennal flagellum brown in apical half. Face entirely yellow. Basal area of hind tibia and apex of hind tarsus yellow.
Subgenital plate pentagonal with basal angle obtuse (Fig. 8e). Paramere short, basal part strongly projecting towards base of subgenital plate (Fig. 7i). Aedeagus gently curved, its penis valve ca 2.0 times as long as basal apodeme (Fig. 7j).
Distribution
Japan (Hokkaido, Rishiri Is.*, Honshu, Kyushu, and Tsushima Is.) and Korea. * New record.
Bionomics
Host unknown. Adults mainly fly from May to July.
description: Published as part of Ito, Masato & Maeto, Kaoru, 2017, Revision of the genus Spilopteron Townes, 1965 (Hymenoptera: Ichneumonidae: Acaenitinae) from Japan, pp. 1-33 in European Journal of Taxonomy 356 on pages 15-17, DOI: 10.5852/ejt.2017.356, http://zenodo.org/record/3836333