Mesoleius morishitai, Watanabe, 2024

Watanabe, Kyohei, 2024, Taxonomic Study of Japanese Ctenopelmatinae (Hymenoptera, Ichneumonidae), with Descriptions of 22 New Species, Bulletin of the Kanagawa Prefectural Museum (Natural Science) 53, pp. 39-102 : 84-85

publication ID

https://doi.org/ 10.5281/zenodo.13237363

publication LSID

lsid:zoobank.org:pub:D4FC7074-ADC6-4310-B60E-12B7ECBD6E25

DOI

https://doi.org/10.5281/zenodo.12774269

persistent identifier

https://treatment.plazi.org/id/1CFBE678-AD40-4317-9839-61C2A72C6A79

taxon LSID

lsid:zoobank.org:act:1CFBE678-AD40-4317-9839-61C2A72C6A79

treatment provided by

Felipe

scientific name

Mesoleius morishitai
status

sp. nov.

Mesoleius morishitai sp. nov.

(SJN: Oo-ko-maru-himebachi)

( Figs. 30A–D View Fig , 39I View Fig , 40V View Fig )

Type series. Holotype: JAPAN, KPM-NK 84966 , F, Aichi Pref., Toyohashi City, Imure-cho, Takayama , 6. V. 2020, S. Morishita leg. Paratype: JAPAN, NARO, F, Miyazaki Pref., Kirishima, Mt. Takachihonomine , 21. V. 1982, H. Takemoto leg.

Description. Female (n = 2). Body length 9.7–11.9 (HT: 9.7) mm, matt and covered with silver setae.

Head 0.6 × as long as wide in dorsal view. Clypeus 2.2 × as broad as high, sparsely punctate and polished, almost flat in lateral view, lower margin with a median concavity, strongly margined laterally ( Fig. 40V View Fig ). Face 1.75–1.85 (HT: 1.75) × as broad as high, finely punctate medially, slightly convex medially in lateral view. Dorsal profile of gena as Fig. 39I View Fig . Occipital carina complete. Length of malar space 0.4 × as long as basal width of mandible. Base of mandible slightly convex. POL 1.1–1.45 (HT: 1.1) × as long as OD. OOL 1.25–1.45 (HT: 1.25) × as long as OD. Antenna with 42 flagellomeres. FL I 5.0 × as long as maximum depth, 1.55–1.6 (HT: 1.55) × as long as FL II. Length of FL I plus FL II 1.1 × as long as eye height.

Mesosoma. Epomia short. Mesoscutum with weak notaulus. Epicnemial carina present laterally and ventrally, its dorsal end situated near anterior margin of mesopleuron. Speculum almost entirely granulate except for very small (its size about as long as spiracle of propodeum) smooth area ( Fig. 30C View Fig ). Propodeum with pleural carina, lateral longitudinal carina, partly indistinct lateromedian longitudinal carina, and partly indistinct posterior transverse carina ( Fig. 30D View Fig ). Fore wing length 10.1–11.0 (HT: 10.1) mm. Areolet absent. Fore wing vein 1cu-a postfurcal to vein M&RS. Nervellus subvertical, intercepted posterior the middle. Tarsal claws simple. Hind femur 5.0–5.1 (HT: 5.0) × as long as maximum depth in lateral view. Ratio of length of hind first to fifth tarsomeres 4.2–4.3 (HT: 4.2): 2.0: 1.5: 0.95–1.0 (HT: 1.0): 0.8–0.9 (HT: 0.8).

Metasoma. T I 1.4–1.5 (HT: 1.4) × as long as maximum width. T II 0.75–0.9 (HT: 0.75) × as long as maximum width. Setae of subgenital plate directed backwards. Ovipositor sheath with short (shorter than half depth of ovipositor sheath) setae apically. Ovipositor sheath 0.2 × as long as hind tibia.

Colouration ( Figs. 30A–D View Fig ). Body (excluding wings and legs) black. Clypeus, mandible except for teeth, palpi, postero-dorsal corner of pronotum, scutellum, postscutellum, tegula, and subtegular ridge yellow. Antero-lateral part of mesoscutum with a pair of small yellow markings. Posterior margins of metasomal sternites tinged with whitish yellow. Yellow areas of postscutellum and subtegular ridge sometimes obscured. Wings hyaline. Veins and pterostigma blackish brown except for yellow wing base. Fore and mid legs reddish yellow to reddish brown. Fore and mid coxae black. Fore and mid trochanters partly tinged with black. Hind leg black except for subbasal white band of tibia.

Male. Unknown.

Distribution. Japan (Honshu and Kyushu).

Bionomics. Unknown.

Etymology. The specific name is from Mr. Shunsuke Morishita, who is an ichneumonologist and collector of holotype.

Remarks. This species resembles Mesolei. alekhinoi in body colouration and sculpture of the mesopleuron, but can be distinguished by the entirely yellow clypeus (largely brown in Mesolei. alekhinoi ), the T I 1.4–1.5 × as long as maximum width (ca. 1.15 in Mesolei. alekhinoi ), the antenna with 42 flagellomeres (36 in Mesolei. alekhinoi ), the fore wing length 10.1–11.0 mm (8.4 mm in Mesolei. alekhinoi ).

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hymenoptera

Family

Ichneumonidae

Genus

Mesoleius

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