Tropistes shimizui Watanabe, 2021, sp. nov.
Creators: name: Watanabe, Kyohei
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Ichneumonidae
Tropistes
Tropistes shimizui

description: Tropistes shimizui sp. nov.
(New SJN: Tachi-chibi-togari-himebachi)
(Figs 54A–D, 64F, 66T)
Etymology. The specific name is from Dr. So Shimizu, who is a young Japanese ichneumonologist and collector of holotype.
Type series. Holotype: KPM-NK 81833, F, JAPAN, Nagano Pref., Ueda City, Sugadairakogen, Tsukuba University, 4–25. VI. 2015, S. Shimizu leg. (MsT).
Description. Female (n=1). Body length 6.7 mm. Body polished, covered with silver setae.
Head. Clypeus 2.7 times as wide as maximum length, sparsely punctate except for smooth anterior margin, its anterior margin rounded, without teeth. Face punctate (Fig. 54B), the interspace of punctures coriaceous. MSL 0.9 times as long as BWM. Frons and vertex punctate, the interspace of punctures coriaceous. Gena sparsely and finely punctate, largely smooth laterally. OOL shorter than POL. OOL and POL longer than OD. Occipital carina complete, its lower end joined with hypostomal carina distant from mandibular base. Upper tooth of mandible almost as long as lower tooth. Base of mandible slightly convex. Antenna with 26 flagellomeres. Subapical part of antenna not widened. All segments of flagellomeres longer than wide. FL III 6.67 times as long as maximum depth in lateral view.
Mesosoma 2.1 times as long as maximum depth in lateral view. Lateral part of pronotum smooth dorsally, longitudinally rugulose ventrally. Epomia indistinct. Mesoscutum punctate, the interspace of punctures coriaceous dorsally, smooth anteriorly and laterally. Notaulus distinct, fading out in front of center of mesoscutum. Scutellum sparsely punctate, without a lateral longitudinal carina except for base. Mesopleuron longitudinally rugulose dorsally and ventrally, median part coriaceous except for smooth speculum. Posterior transverse carina of mesosternum largely absent in front of mid coxae. Metapleuron sparsely punctate, with an indistinct juxtacoxal carina. Anterior transverse carina of propodeum absent except for median section (Fig. 64F). Posterior transverse carina of propodeum complete (Fig. 64F). Lateromedian longitudinal carina of propodeum present except for posterior section (Fig. 64F). Lateral longitudinal carina of propodeum complete except for indistinct anterior part (Fig. 64F). Pleural carina complete (Fig. 64F). Area basalis and area superomedia distinct (Fig. 64F). Anterior area of propodeum largely coriaceous. Median parts of propodeum transversely rugulose. Posterior part of propodeum largely smooth. Length of fore wing 4.7 mm. Areolet absent (Fig. 54D). Vein 2m-cu of fore wing with two bullae. Nervellus subvertical, intercepted near the middle (Fig. 54D). Hind femur 3.95 times as long as maximum depth in lateral view. Hind TS I: II: III: IV: V = 2.0: 0.9: 0.6: 0.3: 0.55. Tarsal claws simple.
Metasoma laterally compressed except for first segment (Fig. 54C). T I 3.0 times as long as maximum width, coriaceous. Median dorsal carina of T I absent. Dorsolateral carina of T I present in front of the spiracle. T II and T III longer than wide, coriaceous. Ovipositor sheath 1.8 times as long as hind tibia. Ovipositor distinctly downcurved (Fig. 54A), without a nodus and ventral teeth (Fig. 66T).
Coloration (Figs 54A–D). Body (excluding wings and legs) black to blackish brown. Apex of mandible tinged with brown. Palpi and tegula yellowish brown. Membranous part of metasomal sternites whitish brown. Ovipositor reddish brown. Wings hyaline. Veins yellowish brown to brown. Pterostigma brown. Legs reddish brown except for black to blackish brown coxae, trochanters, and trochantelli.
Male. Unknown.
Distribution. Japan (Honshu).
Bionomics. Unknown.
Remarks. This species resembles Tro. falcatus (Thomson, 1884) in the character states of antenna, hind femur, and ovipositor, but it can be distinguished by the coxae black (orange in Tro. falcatus), the tegula yellowish brown (brown in Tro. falcatus), the metasomal tergites black (with red area in Tro. falcatus), the anterior part of mesopleuron coriaceous medially (irregularly rugae in Tro. falcatus), and the area petiolaris largely smooth (distinctly sculptured in Tro. falcatus).
description: Published as part of Watanabe, Kyohei, 2021, Taxonomic and Zoogeographic Study of the Japanese Phygadeuontinae (Hymenoptera, Ichneumonidae), with Descriptions of 17 New Species, pp. 55-136 in Bulletin of the Kanagawa Prefectural Museum (Natural Science) 50 on pages 118-119, DOI: 10.32225/bkpmnh.2021.50_55, http://zenodo.org/record/12774639