Spilopteron luteum ( Uchida, 1930 )

Ito, Masato & Maeto, Kaoru, 2017, Revision of the genus Spilopteron Townes, 1965 (Hymenoptera: Ichneumonidae: Acaenitinae) from Japan, European Journal of Taxonomy 356, pp. 1-33 : 12-15

publication ID	https://doi.org/ 10.5852/ejt.2017.356
publication LSID	lsid:zoobank.org:pub:A7ED0BAC-2637-433D-9BD2-8A9E2C59B2CA
DOI	https://doi.org/10.5281/zenodo.3851934
persistent identifier	https://treatment.plazi.org/id/3D6F7173-5376-3E1C-1836-4F27FCC8FEB1
treatment provided by	Carolina
scientific name	Spilopteron luteum ( Uchida, 1930 )
status

Treatment

Spilopteron luteum ( Uchida, 1930) View in CoL

Figs 2d View Fig , 3d View Fig , 4d View Fig , 5d View Fig , 6d View Fig , 7 View Fig g–h, 8d

Acoenitus luteus Uchida, 1930: 126 . Type locality: Taiwan, Urai.

Arotes luteus – Uchida 1932: 141.

Siphimedia lutea – Cushman 1933: 12. — Uchida 1934: 52. — Sonan 1936: 249.

Spilopteron luteum View in CoL – Townes et al. 1961: 325. — Chiu 1971: 22.— Yu et al. 2005, 2012. — Ito et al. 2012: 443.

Material examined

TAIWAN: 1 ♀ (type of Acoenitus luteus ), Urai, 20. Jul. 1929, C. Watanabe ( SEHU). JAPAN: Amami-oshima Is., Kagoshima Pref., 1 ♀, Kamiya, 1. Aug. 1992, R. Noda ( NIAES); 9 ♀♀, Mt Yui-dake, 2 Jul. 2004; 2 ♀♀, same locality, 15 Jul. 2004, 1 ♀, same locality, Malaise trap, 10 Aug. 2004, H. Makihara ( NIAES); 1 ♂, same locality, 6 Jul. 2013, M. Ito ( KPMNH); 1 ♂, Wase-toge, 25 Jun. 2010; 9 ♂♂ Mt Yuwan-dake, 26–27 Jun. 2010; 1 ♂, same locality, 26–28 Jun. 2010, A. Shimizu ( TMU); 1 ♂, Mt Akatsuchi-yama, 27 Jun. 2011, H. Sawada ( LC041303 View Materials OMNH); 1 ♀, same locality, 28 Jun. 2011, K. Watanabe ( LC041304 View Materials OMNH); 2 ♀♀, same locality, Malaise trap, 28 Jun.–4 Jul. 2011, K. Kikuchi, T. Yoshida, K. Watanabe and S. Fujie ( KPMNH); 1 ♂, Oodana, Yamato-son, 3 Jul. 2011, H. Sawada ( TUA); 1 ♂, same locality, 4 Jul. 2011, K. Watanabe ( NSMT); 1 ♀, same locality, 4 Jul. 2011, S. Fujie ( NSMT).

Differential diagnosis

This species can easily be distinguished from other Japanese species of Spilopteron by the entirely yellowish brown body (largely black or at least with black areas in other Japanese species) ( Ito et al. 2012). ML analysis indicates that this species is most closely related to S. tosaense ( Fig. 9 View Fig ), and this is also supported by the morphological similarity (except for the body coloration).

Description

Female (n = 18)

BODY LENGTH. 10.5–14.0 mm.

HEAD. Vertex 0.5–0.6 times as long as maximum length of eye in dorsal view. Frons without a depression between eye and antennal socket in frontal view ( Fig. 2d View Fig ). Clypeus 0.6 times as long as wide, with two strong lateral projections and a weak median projection ( Figs 2d View Fig , 3d View Fig ). Face 0.7 times as long as wide. Length of malar space 0.8–1.0 times as long as basal mandibular width. Ocello-ocular line/lateral ocellar diameter = 2.0–2.1. Postocellar line/lateral ocellar diameter = 1.0–1.1. Antenna with 33–38 flagellomeres; first flagellomere 1.2–1.3 times as long as second flagellomere.

MESOSOMA. Propleuron densely punctate ( Fig. 5d View Fig ). Lateral area of pronotum densely punctate and transversely striate medially ( Fig. 5d View Fig ). Collar weakly punctate. Mesoscutum densely punctate. Subalar prominence extensively punctate ( Fig. 5d View Fig ). Scutellum weakly punctate in dorsal view. Postscutellum roundly convex in lateral view ( Fig. 5d View Fig ). Metapleuron densely punctate ( Fig. 5d View Fig ). Propodeum strongly carinate ( Fig. 6d View Fig ). Area externa weakly punctate ( Fig. 6d View Fig ). Area basalis polished ( Fig. 6d View Fig ). Area dentipara, area posteroexterna and area petiolaris confluent with area superomedia ( Fig. 6d View Fig ). Fore wing length 10.5–14.0 mm. Vein cu-a basad of vein Rs&M ( Fig. 4d View Fig ). Vein rs-m opposite or distad of vein 2m-cu ( Fig. 4d View Fig ). Hind femur 3.4–3.6 times as long as maximum depth in lateral view, without distinct convexity ventrally. Hind tibia 10.4–12.6 times as long as maximum depth in lateral view. First hind tarsomere 2.3–2.8 times as long as second and 2.4–2.8 times as long as longer hind tibial spur.

METASOMA. T1 2.5–2.9 times as long as maximum width, 2.4–2.6 times as long as T2. T2 0.6–0.8 times as long as maximum width. T1 weakly and sparsely punctate. T2–T8 weakly and densely punctate. S1 without distinct sharp projection basally. Ovipositor sheath 1.7–1.8 times as long as hind tibia.

COLOR. Body reddish yellow ( Fig. 5d View Fig ). Antennal flagellum brown, usually with a distinct white band, but sometimes band not clear. Apex of mandible black ( Fig. 3d View Fig ). Apical area of hind trochantellus and basal area of hind femur brown. Fore wing with an apical dark mark extending downwards ( Fig. 4d View Fig ).

Male (n = 15; genitalia, n = 2)

Similar to female. Clypeus 0.6–0.7 times as long as wide. Antenna with 39–42 flagellomeres; first flagellomere 1.1–1.2 times as long as second flagellomere. Hind femur 4.4 times as long as maximum depth in lateral view. Hind tibia 13.4–14.2 times as long as maximum depth in lateral view. First hind tarsomere 2.1 times as long as second and 2.9–3.1 times as long as longer hind tibial spur. T1 3.1–3.2 times as long as maximum width, 2.3–2.4 times as long as T2. T2 0.9 times as long as maximum width. Antennal flagellum black, without a white band.

Subgenital plate hexagonal with basal angle obtuse ( Fig. 8d View Fig ). Paramere short, basal part strongly projecting towards base of subgenital plate ( Fig. 7g View Fig ). Aedeagus gently curved, its penis valve ca 1.6 times as long as basal apodeme ( Fig. 7h View Fig ).

Distribution

Japan (Amami-oshima Is.), and Taiwan.

Bionomics

Host unknown. Adults mainly fly in June and July.

R	Departamento de Geologia, Universidad de Chile
NIAES	National Institute for Agro-Environmental Sciences
OMNH	Osaka Museum of Natural History
T	Tavera, Department of Geology and Geophysics
NSMT	National Science Museum (Natural History)

Copyright notice

No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.

Taxonomy

Kingdom	Animalia
Phylum	Arthropoda
Class	Insecta
Order	Hymenoptera
Family	Ichneumonidae
SubFamily	Acaenitinae
Genus	Spilopteron