Acrolyta japonica, Watanabe, 2021

Watanabe, Kyohei, 2021, Taxonomic and Zoogeographic Study of the Japanese Phygadeuontinae (Hymenoptera, Ichneumonidae), with Descriptions of 17 New Species, Bulletin of the Kanagawa Prefectural Museum (Natural Science) 50, pp. 55-136 : 61-62

publication ID	https://doi.org/ 10.32225/bkpmnh.2021.50_55
publication LSID	lsid:zoobank.org:pub:DD695C62-DC2F-4D32-8D33-52648E28661D
DOI	https://doi.org/10.5281/zenodo.12769936
persistent identifier	https://treatment.plazi.org/id/56E2FAF8-7134-4F7A-B8B7-E9D756DF5BD6
taxon LSID	lsid:zoobank.org:act:56E2FAF8-7134-4F7A-B8B7-E9D756DF5BD6
treatment provided by	Felipe
scientific name	Acrolyta japonica
status	sp. nov.

Treatment

Acrolyta japonica sp. nov.

(New SJN: Tatesuji-mame-togari-himebachi)

( Figs 4A–E View Fig , 62F, N View Fig , 63A View Fig , 65A View Fig , 66A View Fig )

Etymology. The specific name is from Japan.

Type series. Holotype: KPM-NK 54996 , F, JAPAN, Hokkaido, Horokanai Town, Moshiri , Uryu , 16. VII. 2012, M. Ito leg. Paratypes: JAPAN, KPM-NK 54998–54500 , 3 F, same data of holotype ; KPM-NK 54997 , F, ditto, 16. VII. 2012 ; KPM-NK 54501 , 54502 , 2 F, ditto, 17. VII. 2012, K. Watanabe leg. ; KPM-NK 54503 , Niigata Pref., Sado Is. , Sado City, Kanaisinbo, Hakuundai to Mt. Myokenzan , 4. VIII. 2009, K. Watanabe leg. ; KPM-NK 54504 , F, Yamanashi Pref., Koushu City, Sagashio , 4. VIII. 2009, K. Watanabe leg. ; KPM-NK 54505 , F, Yamanashi Pref., Koushu City, Kaminikkawa-toge , 8. VI. 2009, T. Kidokoro leg.

Description. Female (n=10). Body length 3.5–4.7 (HT: 4.2) mm. Body covered with silver setae.

Head. Clypeus 2.0–2.1 (HT: 2.0) times as wide as maximum length, its anterior margin subtruncate, without distinct teeth anteromedially. Face granulate ( Fig. 4B View Fig ). MSL 0.9–1.0 (HT: 1.0) times as long as BWM. Malar space polished except for coriaceous anterior part. Frons and anterior part of vertex matt except for smooth area above antennal sockets. Posterior part of vertex and gena polished, with fine and sparse punctures. OOL almost as long as POL. Occipital carina complete, joined with hypostomal carina near mandibular base. Upper tooth of mandible slightly longer than lower tooth. Base of mandible weakly convex. Antenna with 21–24 (HT: 24) flagellomeres, median and subapical parts slightly widened ( Fig. 4A View Fig ), the most widened part ca. 2.0 times as long as maximum depth of FL I in lateral view. FL I, FL II, and FL III distinctly longer than other segments ( Fig. 62N View Fig ). FL III 3.8–4.0 (HT: 3.8) times as long as maximum depth in lateral view.

Mesosoma. Lateral part of pronotum largely smooth, with epomia ( Fig. 4D View Fig ). Mesoscutum matt and subpolished, with distinct notaulus ( Fig. 4C View Fig ). Scutellum polished, punctate ( Fig. 4C View Fig ). Mesopleuron smooth, with some longitudinal striae ventrally ( Fig. 4D View Fig ). Metapleuron punctate except for median smooth area, with a complete juxtacoxal carina ( Fig. 4D View Fig ). Anterior and posterior transverse carinae of propodeum complete ( Fig. 65A View Fig ). Area basalis distinct ( Fig. 65A View Fig ). Area superomedia distinct or indistinct laterally ( Fig. 65A View Fig ). Anterior part of propodeum finely and sparsely punctate. Median and posterior parts of propodeum covered with longitudinal, oblique and irregular rugae. Length of fore wing 3.4–4.6 (HT: 3.7) mm. Areolet absent ( Fig. 4E View Fig ). Vein 2m-cu of fore wing with two bullae. Nervellus inclivous, intercepted behind the middle ( Fig. 4E View Fig ). Hind femur 4.7–5.1 (HT: 5.1) times as long as maximum depth in lateral view. Hind TS I: II: III: IV: V = 2.0: 0.95–1.0 (HT: 1.0): 0.7: 0.3: 0.4–0.5 (HT: 0.45). Tarsal claws simple.

Metasoma. T I 1.7–1.8 (HT: 1.7) times as long as maximum width, longitudinally striated ( Fig. 4C View Fig ). Median dorsal carina of T I present except for posterior part absent. Dorsolateral carina of T I complete. T II and T III covered with longitudinal striae except for smooth areas ( Fig. 4C View Fig ). T IV and T V sparsely punctate except for posterior smooth areas. Ovipositor sheath 0.63–0.70 (HT: 0.68) times as long as hind tibia. Ovipositor straight, with a nodus and ventral teeth ( Fig. 66A View Fig ).

Coloration ( Figs 4A–E View Fig ). Body (excluding wings and legs) black to blackish brown. Ventral parts of scape and pedicel, and base of FL I reddish brown. Mandible yellow except for darkened apex. Palpi, postero-dorsal corner of pronotum, and tegula yellow. Posterior margin of metasomal tergites (it of T II to T IV wider than other tergites), lateral parts of T II to T IV, and thyridium reddish brown. Membranous part of metasomal sternites and ovipositor reddish brown. Wings hyaline. Veins and pterostigma yellowish brown to brown. Legs reddish brown to yellowish brown. Fore and mid coxae, trochanters, and trochantelli yellow. Base of hind coxa, base and apical parts of hind tibia, and apical part of hind tarsus more or less tinged with blackish brown.

Male. Unknown.

Distribution. Japan (Hokkaido, Honshu, and Sado Is.).

Bionomics. Unknown.

Remarks. This species resembles Acr. marginata ( Bridgman, 1883) in the body structures, but it can be distinguished by the FL III 3.8–4.0 times as long as maximum width (4.4–4.6 in Acr. marginata ).