Strongylogaster tianmunica, Liu & Li & Wei, 2021

Liu, Mengmeng, Li, Zejian & Wei, Meicai, 2021, Review of Strongylogaster Dahlbom (Hymenoptera: Tenthredinidae) from Zhejiang Province, China, with the description of a new species, Zoologia (e 63051) 38, pp. 1-7 : 3-6

Strongylogaster tianmunica sp. nov.

Figs 1–16

http://zoobank.org/ F7E63E9D-CEEE-4D40-9F9B-CB229F34DF4E

Type locality. China, Zhejiang, Lin’an District, Mt. Tianmu. Diagnosis. This new species resembles S. nantouensis Naito ,

1990, but differs from the latter by the following characters: female body length 10–12 mm, male body length 8–10 mm; tegula brown to dark brown; pronotum largely-yellowish white; trochanters black, apical half of hind femur and of hind tibia yellowish-white; malar space as long as radius of median ocellus; antennomere 3 as long as antennomere 4; and ovipositor apical sheath with distinct lateral scapes.

Type material. Female holotype, China, Zhejiang Province, Lin’an District, Mt. Tianmu , Chanyuan Temple , 30.323°N, 119.442°E, 405 m, 15-IV-2016, leg. Zejian LI & Mengmeng LIU & Zhiwei CHEN , ethyl acetate ( LSAF16144 , ASMN). Paratypes, 5 females and 5 males, same data as holotype ( LSAF16144 ); 1

female and 6 males, China, Zhejiang Province, Lin’an District, Mt. Tianmu, Chanyuan Temple , 30.323°N, 119.442°E, 405 m, 12- IV-2015, leg. Zejian LI, ethyl acetate ( LSAF15029 ) ; 3 females and 3 males, China, Zhejiang Province, Lin’an District, Mt. Tianmu, Chanyuan Temple , 30.323°N, 119.442°E, 405 m, 13-IV-2016, leg. Zejian LI & Mengmeng LIU & Zhiwei CHEN, ethyl acetate ( LSAF16141 ) ; 1 female and 3 males, China, Zhejiang Province, Lin’an District, Mt. Tianmu, Chanyuan Temple , 30.323°N, 119.442°E, 405 m, 8-IV-2017, leg. Kaiwen GAO & Tingting JI, ethyl acetate ( LSAF17028 ) ; 1 female and 2 males, China, Zhejiang Province, Lin’an District, Mt. Tianmu, Chanyuan Temple , 30.323°N, 119.442°E, 405 m, 3-IV-2018, leg. Zejian LI & Mengmeng LIU & Kaiwen GAO & Tingting JI, ethyl acetate ( LSAF18012 ) ; 2 females and 6 males, China, Zhejiang Province, Lin’an District, Mt. Tianmu, Chanyuan Temple , 30.323°N, 119.442°E, 405 m, 8-IV-2018, leg. Tingting JI, ethyl acetate ( LSAF18019 ) ; 1 female and 2 males, China, Zhejiang Province, Lin’an District, Mt. Tianmu, Chanyuan Temple , 30.323°N, 119.442°E, 405 m, 11-IV-2018, leg. Tingting JI, ethyl acetate ( LSAF18025 ) ; 1 female and 1 male, China: Zhejiang Province, Lin’an District, Mt. Tianmu, Chanyuan Temple , 30.323°N, 119.442°E, 405 m, 17-18-IV-2018, leg. Mengmeng LIU & Kaiwen GAO & Tingting JI, ethyl acetate ( LSAF18028 ) ; 2 females, China: Zhejiang Province, Lin’an District, Mt. Tianmu, Chanyuan Temple , 30.323°N, 119.442°E, 405 m, 17-IV-2016, leg. Zejian LI & Mengmeng LIU & Zhiwei CHEN, ethyl acetate ( LSAF16146 ) ; 1 female, China: Zhejiang Province, Lin’an District, Mt. Tianmu, Chanyuan Temple , 30.323°N, 119.442°E, 405 m, 8-IV-2017, leg. Zejian LI & Mengmeng LIU, ethyl acetate ( LSAF17027 ) ; 1 male, China: Zhejiang Province, Lin’an District, Mt. Tianmu, Chanyuan Temple , 30.323°N, 119.442°E, 405 m, 6-IV-2017, leg. Kaiwen GAO & Tingting JI, ethyl acetate ( LSAF17025 ) ; 1 male, China, Zhejiang Province, Lin’an District, Mt. Tianmu, Chanyuan Temple , 30.323°N, 119.442°E, 405 m, 6-IV-2017, leg. Zejian LI & Mengmeng LIU, ethyl acetate ( LSAF17024 ) ; 2 males, China, Zhejiang Province, Lin’an District, Mt. Tianmu, Chanyuan Temple , 30.323°N, 119.442°E, 405 m, 11-12-IV-2017, leg. Tingting JI, ethyl acetate ( LSAF17029 ) ; 3 males, China, Zhejiang Province, Lin’an District, Mt. Tianmu, Chanyuan Temple , 30.322°N, 119.443°E, 362 m, 5-IV-2019, leg. Zejian LI & Xiufang LI, ethyl acetate ( LSAF19007 ) ; 9 males, China, Zhejiang Province, Lin’an District, Mt. Tianmu, Chanyuan Temple , 30.322°N, 119.443°E, 362 m, 7-8-IV-2019, leg. Zejian LI & Xiufang LI, ethyl acetate ( LSAF19008 ) ; 1 female, China, Zhejiang Province, Lin’an District, Mt. Tianmu, Chanyuan Temple , 30.322°N, 119.443°E, 362 m, 28-29-IV-2019, leg. Xiufang LI & Tingting JI, ethyl acetate ( LSAF19018 ) ; 1 female, China, Zhejiang Province, Lin’an District, Mt. Tianmu, Chanyuan Temple , 30.322°N, 119.443°E, 362 m, 1-2-V-2019, leg. Xiufang LI & Tingting JI, ethyl acetate ( LSAF19019 ) ; 2 males, China, Zhejiang Province, Lin’an District, Mt. Tianmu, Xianrending , 30.350°N, 119.424°E, 1506 m, 3-V-2019, leg. Zejian LI, ethyl acetate ( LSAF19023 ) ; 1 male, China: Zhejiang Province, collection details missing ( LSAF14008 ) .

Description. Holotype, female ( Figs 1, 3, 4, 6, 8, 9, 10, 11, 13, 14); paratype, male ( Figs 2, 5, 7, 12, 15, 16). Body length 10–12 mm ( Fig. 1).

Color. Body black; palp mostly blackish-brown; broad band on posterior margin and lateral corners of pronotum, yellowish-white; tegula, median blotch of abdominal tergum 1, narrow but distinct posterior margins of abdominal terga 1–8, narrow posterior margins of sternites 1–6, indistinct median carina and posterior margin of abdominal tergum 10, pale brown; apical margins of fore and middle coxae, apical 2/5 of hind coxa, about apical half of each femur and basal half of all tibiae, yellowish-white; apical half of fore tibia and tarsomeres, apical half of middle tibia, almost entire middle tarsomeres and base of metabasitarsus, brown; apical half of hind tibia and hind tarsus except base blackish-brown to black. Wings hyaline, apical third barely infuscate, basal 1/2 of vein C in fore wing and entire vein C in hind wing pale brown, other veins and stigma blackish-brown. Body hairs silver, hairs on sheath and antennae blackish-brown.

Punctuation. Dorsum of head largely smooth and impunctate, face and frons weakly sculptured mixed with some small punctures, shiny ( Fig. 3); clypeus and supraclypeal area densely and coarsely punctured, less shiny ( Fig. 4); mesonotum, mesoscutellum and appendage, mesepisternum and mesepimeron largely smooth, strongly shiny, posterior margin of mesoscutellum with a row of large punctures; metepisternum and margins of metepimeron finely microsculptured, without distinct punctures ( Fig. 6); abdominal tergum 1 weakly microsculptured, other abdominal terga distinctly microsculptured.

Head. Clypeus flat, anterior margin shallowly incised to 1/6 length of clypeus; labrum small and short, transverse ( Fig. 4); mandible short and broad, symmetrically bidentate; supraclypeal area slightly elevated; median fovea round and deep, lateral foveae broad and deep; frontal area faintly elevat- ed, frontal crest slightly developed, interocellar furrow deep, punctiform, postocellar furrow fine but distinct, roundly bent forward; postocellar area elevated, approximately 2× broader than long, lateral furrow deep and broad, divergent backwards; lower third of hind orbit with low but distinct occipital carina; POL: OOL: OOCL = 40: 45: 30; malar space 0.6× breadth of diameter of middle ocellus ( Fig. 3); inner margins of eyes slightly convergent downwards; head strongly narrowed behind eyes in dorsal view ( Fig. 3). Antennae approximately 1.5× length of head and thorax (7: 4.6), approximately 0.9× length of abdomen (7: 8), approximately 2.8× length of breadth of head (7: 2.5), antennomere 3 about as long as antennomere 4, length ratio of antennomeres 5–9 41: 36: 34: 32: 29 ( Fig. 11).

Wings ( Fig. 1). Fore wing with R+M short, M straight, almost parallel to 1m-Cu, anal cell without anal cross-vein, cu-a joining cell 1M at middle, vein 2r joining cell 2Rs at apical 1/4, cell 2Rs longer than cell 1Rs; hind wing with cell Rs slightly shorter than cell M, anal cell sessile.

Legs. Apical spurs of hind tibia subequal in length, slightly longer than apical breadth of hind tibia, hind basitarsomere much shorter than following 4 tarsomeres together (13: 16); claw with a minute inner tooth ( Fig. 8).

Ovipositor sheath. Ovipositor sheath in lateral view as shown in Fig. 9 and in dorsal view as shown in Fig. 10, lateral scapes small but distinct, divergent backwards in dorsal view; lancet as shown in Fig. 13, distinctly tapering towards apex, apical half of lancet as in Fig. 14.

Male. Body length 8–10 mm ( Fig. 2); color and structure similar to female except as follows: narrow posterior margin of abdominal terga 3–4 yellowish-brown; narrow posterior margin of terga 5–8 whitish; narrow apex of each coxa white; apical half of fore femur, apical third of middle femur and apical fifth of hind femur, fore and middle tibiae entirely and base of hind tibia, yellowish-brown; fore and middle tarsi pale brown at basal part and dark brown towards apex; hind tibia except for base and hind tarsus blackish-brown; head, in dorsal view, more strongly narrowed ( Fig. 5); antennomere 3 broader and shorter than antennomere 4 (40: 46), length ratio of antennomeres 5–9 as 44: 38: 35: 32: 25 ( Fig. 12); subgenital plate slightly longer than broad, apical margin subtruncate ( Fig. 7); gonoforceps as shown in Fig. 15, harpe clearly longer than broad; penis valve as shown in Fig. 16, dorsal margin of valviceps with many minute teeth.

Host plants. Unknown.

Distribution. China (Zhejiang).

Etymology. The specific epithet “ tianmunica ” is derived from Mt. Tianmu in Zhejiang Province, where the type specimens were collected.