Neocolochelyna (Curvatapenis) itoi Takeuchi 1951
Creators: name: Niu, Gengyun
name: Wei, Meicai
name: Shinohara, Akihiko
name: Naito, Tikahiko
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Tenthredinidae
Neocolochelyna
Neocolochelyna itoi

description: Neocolochelyna (Curvatapenis) itoi Takeuchi, 1951
(Figs 1 f, 1g, 2c, 4d–i, 6e–f, 7e–f, 7n–o, 8a, 8e, 8i, 9a, 9e, 10e–f, 11e–f, 11o–p)
Neocolochelyna itoi Takeuchi, 1951: 62; Takeuchi, 1955: 120; Okutani, 1956: 1; Maxwell, 1958: 19; Togashi, 1965: 246; Togashi, 1995: 870; Yasumatsu, 1957: 101; Okutani et al., 1992: 238; Naito et al., 2004: 50; Shikata & Itakura, 2009: 75. Neocolochelyna hakusana Togashi, 1995: 866; Taeger et al., 2010: 567. Syn. nov.
Description. Female. Specimen from Mt. Hakusan (Fig. 1 f). Length 16 mm. Head brown (Figs 4 d–e), labrum and malar space yellowish brown, narrow posterior margin of clypeus, supraclypeal area, frons, lower 0.7 of inner orbit, ocellar area, narrow anterior margin of postocellar area and posterior side of head largely black; basal two antennomeres entirely, basal 0.4 of antennomere 3 yellow brown, apical 0.6 of antennomere 3 and remaining antennomeres dark brown, antennomere 3 more or less black at middle (Fig. 11 e). Thorax black, broad posterior margin of pronotum, tegula, lateral stripe on mesoscutal middle lobe, broad anterior margin and narrow posterior margin of parapsis, mesoscutellum (excluding appendage), metascutellum and cenchrus pale brown. Abdomen brown to pale brown, basal 0.8 (middle) to 0.6 (lateral) of tergite 1 (Fig. 6 e), basal 0.3–0.4 of tergites 3–7, short lateral macula and narrow anterior margin of tergite 2, about basal 0.4–0.7 of each sternite black; ovipositor sheath largely brown. Body hairs brown to pale brown. Legs black, hind trochanter entirely, broad anterior stripe and broad apex of fore and middle femora, fore and middle tibiae entirely pale brown, hind tibia brown to dark brown, all tarsi yellow brown. Wings yellowish infuscate in anterior part and gradually paler toward posterior margin, vein C and pterostigma pale brown, posterior of vein Sc+R and most of vein M+Cu blackish; hind wing weakly infuscate, slightly paler than forewing.
Punctures on labrum small and dense, narrow interspaces between punctures weakly microsculptured; punctures on clypeus dense and large, interspaces between punctures smooth, shiny (Fig. 3 e); inner orbit and hind orbit densely punctured, interspaces linear, weakly microsculptured, less shiny; frons densely and coarsely punctured, interspaces very narrow and microsculptured, almost dim; punctures on temple and postocellar area much sparser than frons, surface very weakly microsculptured, moderately shiny (Figs 4 f); malar space densely punctured, shiny; upper corner of pronotum moderately punctured and shiny, depressed part of pronotum coarsely punctured and microsculptured, almost mat; mesoscutal middle lobe and lateral lobe densely punctured, interspaces very narrow, distinctly microsculptured, almost dim; mesoscutellum densely punctured with narrow smooth interspaces, less shiny; mesoscutellar appendage weakly coriaceous, impunctate; parapsis and metapostnotum densely microsculptured (Fig. 6 e); punctures on upper half of mesepisternum large and very dense, interspaces very narrow, hardly shiny; punctures on lower half of mesepisternum small and much sparse, surface indistinctly microsculptured, distinctly shiny; mesepimeron and metapleuron strongly microsculptured mixed with some large but shallow punctures; abdominal tergite 1 densely microsculptured, almost mat, narrow lateral side densely punctured, very narrow posterior margin weakly coriaceous, less shiny; tergite 2 hardly punctured, densely microsculptured (Fig. 6 e), other tergites densely microsculptured mixed with dense or sparse punctures, almost mat; median part of tergite 8–9 weakly microsculptured, feebly shiny; surface of ovipositor sheath weakly microsculptured mixed with some shallow punctures.
Hairs on dorsum of head and mesopleuron dense and almost straight, about 0.9 times as long as diameter of median ocellus (Figs 4 d–e); hairs on mesonotum dense and about 0.6 times as long as diameter of median ocellus; dorsum of abdominal tergites 1–3 largely glabrous except for narrow middle stripe (Fig. 6 e), other tergites evenly pubescent; mesoscutellar appendage and intertergites of abdomen glabrous.
Labrum broad, anterior margin round, not acute; anterior margin of clypeus very weakly incised in entire length, almost truncate; malar space about as long as diameter of median ocellus (Fig. 4 e); mandibles as Figs 11 o– p; hind orbit round, without occipital carina; distance between eyes at level of anterior tentorial pits 1.4 times as long as longest axis of eye (Fig. 4 e); middle fovea round, deep, closed; lateral fovea distinct; frons small, very short, frontal ridge broad and round; POL: OOL: OCL=15: 25: 26; interocellar furrow broad and very deep, postocellar furrow fine and shallow, hardly bent forward; postocellar area roundly elevated, about 1.3 times as broad as long; lateral furrow deep and very broad, weakly curved, distinctly divergent backwards; head roundly dilated behind eyes in dorsal view (Fig. 4 d). Antenna as long as thorax, antennomere 3 about 1.1 times as long as antennomeres 4 and 5 together and 0.8 times as long as antennomeres 6–9 together, antennomere 7 about as long as broad (Fig. 11 e). Mesoscutal middle lobe with narrow but distinct middle furrow; mesoscutellum roundly elevated, anterior margin almost truncate, hardly protruding, transverse anterior furrow deep; mesoscutellar appendage short with middle length about as long as diameter of median ocellus; cenchrus transverse, much broader than long, CD=1.6 (Fig. 6 e); mesepisternum roundly and weakly elevated at middle, without blunt ridge. Venation as Fig. 1 f, cell 2Rs about 0.9 times as long as cells 1R1+1Rs, cell A of forewing strongly constricted at basal 0.25, where distance between 1A and 2A+3A 2.5 times as broad as vein 2A+3A, first abscissa of vein M 0.9 times as long as 1m-cu, vein 2r1 meeting cell 2Rs at apical 0.35–0.45. Inner tibial spur of fore leg as Fig. 7 n; claw as Fig. 7 e, inner tooth clearly shorter than apical tooth. Triangular middle lobe of sternite 7 very large and broad, about as broad as lateral straight posterior margin of sternite 7 (Fig. 8 i). Ovipositor sheath 1.1 times as long as front tibia and 0.9 times as long as middle tibia, apical sheath as long as basal sheath, narrowly truncate at apex in lateral view. Lancet as Fig. 8 a, with 26 serrulae, middle and apical segments as Figs 9 a, 9e, annular spines and surface sculptures of middle of lancet as Fig. 9 e; basal sensilla as Fig. 8 e.
Male. Specimen from Minokoshi (Fig. 1 g). Body length 14 mm. Color, punctation and structure similar to female except for following: malar space 0.5 times as long as diameter of median ocellus; distance between eyes at level of anterior tentorial pits 1.2 times as long as longest axis of eye (Fig. 4 h); head hardly dilated behind eyes in dorsal view, POL: OOL: OCL= 15: 29: 30 (Fig. 4 g); punctures on temple denser (Fig. 4 i); antenna as Fig. 11 f; subgenital plate about as long as broad, apical margin broadly and obtusely truncate; harpes, volsella and gonolacinia as Fig. 10f; penis valve as Fig. 10e, middle tubercle of valviceps long and weakly convex.
Variation. Black macula on head sometimes reduced; mesonotum sometimes largely brown to orange; upper of mesepisternum sometimes with a large or small brown macula; abdominal tergite 3 sometimes largely brown, basal black band almost absent; anterior yellow shade of forewing varying from quite deep to light.
Material examined. Types. JAPAN: Neocolochelyna itoi Takeuchi, 1951 Holotype: ♀, “Sikoku, Iya-Otiai, 5.VI.1951, Issiki et Ito”; “ Neocolochelyna itoi Take., Holotype ”; “ Curvatapenis itoi (Takeuchi, 1951), det. M. Wei, 2014”(OPU). Paratypes and allotype: 1♀, Sikoku, Iya-Nagoro, 2. vi. 1950, Issiki & Ito; Neocolochelyna itoi Tak., Paratype. (OPU). 1Ƌ, Sikoku, Iya-Nagoro, 2. vi. 1950, Issiki & Ito; Neocolochelyna itoi Tak., Allotype. (OPU). 1Ƌ, Sikoku, Iya-Nagoro, 2. vi. 1950, Issiki & Ito; Neocolochelyna itoi Tak., Paratype. (OPU). 1Ƌ, Sikoku, Iya- Nagoro, 5. vi. 1950, Issiki & Ito; Neocolochelyna itoi Tak., Paratype. (OPU).
Neocolochelyna hakusana Togashi, 1995: Holotype ♀, “ 1300-1500m, Mt. Hakusan, Ishikawa Pref., 30.VI. 1994, I. Togashi”; “NSMT-HYM 62142”; “ Neocolochelyna itoi hakusana sub sp. nov. det. Togashi, 1994”; “ Holotypus ” [red]; “ Curvatapenis itoi (Takeuchi), Det. M. C. Wei, 2014”; (NSMT). Paratypes: 1Ƌ, “Arashimadake, Ohno City, 6.VI.1982, T. Murota leg.”; “NSMT-HYM 62143”; “ Paratype ” [red]; “ Neocolochelyna hakusana sp. nov. det. Togashi, 1995 ”. (NSMT). 1♀, “Mt. Hakusan (alt. 1300–1500 m), Ishikawa Pref., 30. VI. 1994, I. Togashi leg.”; “ Neocolochelyna itoi hakusana sub sp. nov., det. Togashi, 1994”; “ Paratype ”[red]; “NSMT-HYM 2061977”; “ Curvatapenis itoi (Takeuchi, 1951), det. M. Wei, 2012”. (USNM).
Other specimens examined. JAPAN: HONSHU: Gunma Pref.: 1♀, Mt. Kurotakiyama, Minamimakimura, 20.v.1987, T. Matsumoto (NSMT). Tokyo Met.: 1♀, Sanjokousen, Kumotoriyama, 3.vi.1952, T. Okada (NSMT). Kanagawa Pref.:1♀, Mizuhinoatama, Mt. Ooyama, 18.v.1997, S. Tsuyuki (NSMT). Nara Pref.: 1♀, 4Ƌ, Mt. Odaigahara, 28-29.v.1977, K. Mizuno (NSMT); 1♀, Myôjindaira, Mt. Kunimiyama, 5.vi.1988, K. Mizuno (NSMT); 3♀, 3Ƌ, Mt. Wasamata, Mts. Ohmine, 7.vi.1981, K. Mizuno (NSMT). Kyoto Pref.: 1♀, Omi, Ohara, Sakyo-ku, Kyoto, 21.vi.1984, T. Matsumoto (NSMT). SHIKOKU: Ehime Pref,: 1♀, Mt. Ishizuchi, 18.vi.1978, N. Yashiro (NSMT); 3♀, 112Ƌ, Nanokawagoe, Tsuchigoya, Ishizuchiyama Mts., 33.75°N, 133.15°E, 1450m, 2- 4.vi.2003, A. Shinohara (NSMT); 1♀, Nanokawagoe, Tsuchigoya, Ishizuchiyama Mts., 33.75°N, 133.15°E, 1450m, 2-4.vi.2003, A. Shinohara, (CSCS); 14Ƌ,Nanokawagoe, Ishizuchiyama Mts., 33.75°N, 133.15°E, 1450m, 8-10.vi.2005, A. Shinohara (NSMT); 1♀, Tsuchigoya, Omogo-mura, 12.vi.1997, H. Urushihara (NSMT).
Tokushima Pref.: 1♀, “ Japan, AWA; Turugiyama, 1. vi. 1950, Issiki & Ito” “ Neocolochelyna itoi Tak., Paratype, det. Takeuchi” (OPU) [this specimen was not mentioned in the original description]; 1Ƌ, “ 30. v. 1950, Mt. Turugi, Awa, Takeuchi” (OPU); 9♀, 20Ƌ,Minokoshi, Tsurugisan Mts., 33.52°N 134.05°E, 1500m, 5.vi.2003, T. Kurihara (NSMT); 2♀, 3Ƌ, Minokoshi, Tsurugisan Mts., 33.52°N 134.05°E, 1500m, 5.vi.2003, T. Kurihara (CSCS); 2♀, 18Ƌ, Minokoshi, Tsurugisan Mts., 33.52°N 134.05°E, 1500m, 5.vi.2003, A. Shinohara (NSMT); 1Ƌ, Meotoike, Tsurugisan Mts., 33.87°N, 134.07°E, 1400m, 6-7.vi.2003, A. Shinohara (NSMT); 2Ƌ, Kasutorisawa, Tsurugisan Mts., 33.88°N, 134.05°E, 1250m, 6.vi.2003, T. Kurihara (NSMT). KYUSHU: Oita Pref.: 1♀, Chojabaru, Kuju, 14- 15.v.1986, A. Shinohara (NSMT). Fukuoka Pref.: 1♀, “[Kyushu], Hikosan, 15. v. 1955, K. Yasumatsu” (OPU); 1♀, Hikosan, 23.v.1950, N. Fukuhara (NSMT); 1♀, Hikosan, 13-15.V. 1964, T. Okada, (NSMT); 1♀, Mt. Hiko, 3.vi.1971 (NSMT).
Distribution. Japan (Fig. 12).
Host plant. Actinidia arguta Plauch (Okutani 1956; Yasumatsu 1957; Togashi 1995; Shikata & Itakura 2009)
Remarks. This species is endemic to Japan. It is similar to N. testaceoa. See above key for the differences between the species and its congeners.
No distinct difference has been confirmed between N. hakusana and N. itoi while comparing the holotypes of the two species. The differences between the two species pointed by Togashi (1995) fall into the variation range of N. itoi.
Maxwell (1958) studied the internal anatomy of the larva of this species. Togashi (1995) described the larva and reported some biological characters of this species under the name of N. hakusana.
Takeuchi (1951) stated that there was one more paratype male with the same data as the holotype but it was not found in OPU when the first two authors visited the university in March, 2014.
description: Published as part of Niu, Gengyun, Wei, Meicai, Shinohara, Akihiko & Naito, Tikahiko, 2016, Revision of Neocolochelyna Malaise (Hymenoptera: Tenthredinidae), pp. 432-456 in Zootaxa 4127 (3) on pages 437-443, DOI: 10.11646/zootaxa.4127.3.2, http://zenodo.org/record/264340