Mesoleptidea amanoi Watanabe, 2024, sp. nov.
Creators: name: Watanabe, Kyohei
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Ichneumonidae
Mesoleptidea
Mesoleptidea amanoi

description: Mesoleptidea amanoi sp. nov.   (SJN: Amano-hoso-maru-himebachi)  
(Figs. 11A–G, 38F, 40F)  
 Type series. Holotype: JAPAN, KPM-NK 84857, F, Kanagawa Pref., Hadano City, Naganuki, 9. VI. 2018, T. Amano leg. Paratype: JAPAN, KPM-NK 84858, M, same data of holotype except for 1. VI. 2019.   
 Description. Female (n = 1). Body length 10.5 mm, polished and covered with punctures and silver setae.   
Head 0.65 × as long as wide in dorsal view. Clypeus 2.7 × as broad as high, rather sparsely punctate ventrally, lower margin with a weak convexity above median sharrow concavity (Fig. 40F). Face 1.6 × as broad as high, matt, flat in lateral view. Dorsal profile of gena as Fig. 38F. Occipital carina complete. Length of malar space 0.75 × as long as basal width of mandible. POL 0.9 × as long as OD. OOL 1.3 × as long as OD. Antenna with 36 flagellomeres. FL I 6.65 × as long as maximum depth, 1.65 × as long as FL II.  
Mesosoma. Epomia absent. Mesoscutum with weak and sharrow notaulus. Epicnemial carina present laterally and ventrally, its dorsal end situated near anterior margin of mesopleuron. Speculum with large smooth area (Fig. 11C). Interspace of punctures of mesopleuron and propodeum smooth and polished (Figs. 11C, E). Metapleuron with distinct punctures (Fig. 11D). Propodeum with longitudinal smooth area dorsally, without carinae except for pleural carina (Fig. 11E). Fore wing length 8.4 mm. Areolet present, shortly petiolated anteriorly, received vein 2m-cu near the outer angle (Fig. 11F). Fore wing vein 1cu-a interstitial to vein M&RS. Nervellus subvertical, intercepted posterior the middle. Tarsal claws simple. Hind femur 6.1 × as long as maximum depth in lateral view. Ratio of length of hind first to fifth tarsomeres 3.8: 2.0: 1.5: 0.9: 0.9.  
Metasoma finely punctate. T I 3.4 × as long as maximum width. T II 1.3 × as long as maximum width. Ovipositor sheath 0.15 × as long as hind tibia.  
Colouration (Figs. 11A–F). Body (excluding wings and legs) black. A pair of markings of frontal orbit, face, clypeus, malar space, mandible except for teeth, lower part of gena, palpi, ventral surface of antenna, postero-dorsal corner of pronotum, a pair of longitudinal markings of antero-lateral part of mesoscutum, tegula, subtegular ridge, longitudinal stripe of mesopleuron, posterior and lateral margins of T II to T VII, and membranous part of metasomal sternites whitish yellow. Ovipositor yellowish brown. Wings hyaline. Veins and pterostigma brown to yellowish brown except for yellow wing base. Fore and mid legs whitish yellow to yellowish brown. Hind coxa black baso-dorsally, yellowish brown apico-ventrally. Hind trochanter black dorsally, yellow ventrally. Hind trochantellus whitish yellow. Hind tibia and femur reddish brown except for both apices blackish brown. Hind tibial spurs and hind tarsus yellowish brown.  
 Male (n = 1). Similar to female. Body length 9.6 mm. POL 0.8 × as long as OD. OOL 1.2 × as long as OD. Antenna with 37 flagellomeres. Length of malar space 0.7 × as long as basal width of mandible. Fore wing length 7.8 mm. Hind femur 5.5 × as long as maximum depth in lateral view. T I 3.1 × as long as maximum width. T II 1.25 × as long as maximum width. Flagellum, mesosoma, hind leg, and metasoma darker than female (Fig. 11G).   
 Distribution. Japan (Honshu).   
 Bionomics. Unknown.   
 Etymology. The specific name is from Mr. Takumi Amano, who is the collector of holotype.   
 Remarks. This species resembles Mesolep. maculata in the presence of areolet and the body colouration, but can be distinguished by the smooth and polished interspaces between the punctures on the mesopleuron and propodeum (granulate and dull in Mesolep. maculata) and the dorsal surface of the propodeum with a conspicuous smooth area in the female (without smooth area in Mesolep. maculata).
description: Published as part of Watanabe, Kyohei, 2024, Taxonomic Study of Japanese Ctenopelmatinae (Hymenoptera, Ichneumonidae), with Descriptions of 22 New Species, pp. 39-102 in Bulletin of the Kanagawa Prefectural Museum (Natural Science) 53 on pages 56-58, DOI: 10.5281/zenodo.13237363