Oberea formosana Pic, 1911

Li, Zhu, Cuccodoro, Giulio & Chen, Li, 2014, On the identity of Oberea formosana Pic, 1911, with description of Oberea pseudoformosana sp. n. from China (Coleoptera: Cerambycidae), Revue suisse de Zoologie 121 (1), pp. 51-62 : 52-57

Oberea formosana Pic, 1911 Figs 1-3 Oberea formosana Pic, 1911: 20 .

TYPE MATERIAL: Lectotype (3): “ Taiwan, Formosa, IV” [handwriting], ( MHNH), by present designation . – Paralectotype, 1♀, “ Taiwan, Formosa, IV” ( MNHN) .

ADDITIONAL MATERIAL (69 specimens): BANGLADESH: 13, Sylhet ( MHNG) . – CHINA: Taiwan : 1♀, “Formosa” ( MHNG) . – 1♀, “ Eboshiyama Formosa ” 17-21.v.1933 ( MHNG) . – 1♀, “ Shotoka Formosa , 10.v.1937, leg. T. Mitono” ( MHNG) . – 13 and 1♀, “Hori Formosa” ( MHNL) . – Chongqing: 13, Jinyunshan, Beibei , 20.v.2006, leg. Wang Zhijin ( SWU) . – 13, same data, but leg. Lou Binhai ( SWU) . – 333 and 1♀, same data but 8.vii.2006, leg. Wang Zhijin ( SWU) . – 1♀, same data but 8.vii.2006, leg. Feng Bo ( SWU) . – 233 and 1♀, same data but 13.vi.2009, leg. Shi Shuqing ( SWU) . – 233 and 2♀♀, Xiangshuitan, Simianshan, Jiangjin , 1200m, 27.vii.1991, leg. Yin Youping ( SWU) . – 13 and 1♀, same data but leg. Wang Zhongkang ( SWU) . – 2♀♀, Dahonghai, Simianshan, Jiangjin 9.vii.2008, leg. Chen Li ( SWU) . – 1♀, same data but 9.vii.2008, leg. Shi Shuqing ( SWU) . – 1♀, Feilongmiao, Simianshan, Jiangjin , 14.vii.2006, leg. Song Yaqin ( SWU) . – 13, same data but 14.vii.2008, leg. Mu Hailiang ( SWU) . – 13, Dawopu, Simianshan, Jiangjin , 11.vii.2008, leg. Shi Shuqing ( SWU) . – 1♀, same data but 11.vii.2008, leg. Li Zhu ( SWU) . – 2♀♀, Simianshan, Jiangjin , 14.vii.2006, leg. Wang Zhijin ( SWU) . – Fujian: 2♀♀, Guadun, Cong’an , Fujian, 11-12.vii.1963, leg. Zhou Yao ( NWAFU) . – 2♀♀, Shaowu, Dazhulan , 16.vii.1963, leg. Zhou Yao ( NWAFU) . – Guangxi: 1♀, Jinxiu, Dayaoshan , 14.vi.1982, leg. Wang Xinli ( CAU) . – Guizhou: 233, Xishui , 26.ix.2000, leg. Shi Fuming ( SWU) . – 13, same data but leg. Li Zizhong ( SWU) . – 13, Jinshagou, Chishui , 21-23.ix.2000 ( SWU) . – 13, Datangwan, Leigongshan , 11-viii.2006 ( SWU) . – 1♀, Leigongshan , 31.v-1.vii.2005, leg. Zhang Zhengguang ( SWU) . – 1♀, Linjiang, Chishui , 29.v.2000 ( SWU) . – Hunan: 3♀♀, Hengshan , 11.vii.1963, leg. Zhou Yao ( NWAFU) . – 1♀, Hupingshan , 1000-1200m, 15.vii.2012, leg. Qiu Jianyue and Xu Hao ( SWU) . – Jiangxi: 1♀, “ Kuling Jiangxi, 12.ii.1935, leg. O. Piel ” ( MHNG) . – Shaanxi: 4♀♀, Louguantai , 24.vii.1984 ( NWAFU) . – Sichuan: 1♀, Emeishan , Sichuan, 18.vi.2007, leg. Wang Zhongkang ( SWU) . – Zhejiang: 2♀♀, Qingliangfeng, Longtangsi , 29.vi.2012, leg. Xu Hao ( SWU) . – 13, Dajingwu , 7.vi.2012, leg. Qiu Jianyue and Xu Hao ( SWU) . – 233, 23.vi.1957, leg. Li Fasheng ( CAU) . – 1♀? [abdomen missing], “Szechuan, Tienmushan” [mislabeled? Tienmushan is in Zhejiang, not in Sichuan] ( MHNG) , mislabeled paratype of O. formosana v. ruficornis Breuning. – INDIA: Assam: 13, “ Assam ” ( MHNG) . – Meghalaya: 1♀, “Khasia [= Khasi] Hills” ( MHNL) . – 13, “ Khasis [ Khasi ], 1869.v.” mislabeled paratypes of O. formosana v. spinipennis Breuning (MHNL) . – Sikkim: 13, “ Sikkim MAND” ( MHNG) . – INDONESIA: 2♀♀, “SE. Borneo [Kalimantan]” ( MHNG & MHNL) , mislabeled paratypes of O. formosana v. spinipennis Breuning. – MALAYSIA: 1♀, Sarawak, Lundu ( BMNH) , type of O. formosana v. spinipennis Breuning [unavailable name, see under Material and Methods]. – VIETNAM: 13 and 1♀, “Tonkin, Hoa Binh ” ( MHNL) . – 1♀, “Mauson” [handwritten, barely readable; Mt Mau Son , Lang Son province?] ( MHNL) , mislabeled paratypes of O. formosana v. spinipennis Breuning.

DESCRIPTION

Male: Body ( Figs 1a, b ) 8. 0-13.5 mm long and 2. 0-2.5 mm wide, predominantly yellowish-brown to reddish-brown, except legs paler and apex of mandibles, hind tibiae and tarsi dark brown, and antennae with dark brown scape and slightly paler flagellum. Entire body and appendages clothed with short golden pubescence; presence of scattered dark hairs on undersides of basal antennomeres, and some erect yellow hairs on pronotum and elytra. Head, pronotal disc, metepisternum and sides of abdominal segments finely and densely punctured. Elytra with basal half of disc bearing six longitudinal rows of coarse and deep punctures, latter becoming gradually finer and disorganized towards apex.

Head nearly as long as wide, slightly wider than prothorax, with surface finely and densely punctured. Eyes very large, with inferior lobes 1.5 times longer than genae; depression between base of antennae and head with a medial groove. Antennae approximately 1.5 times longer than body; antennomeres ratio (from scape to apex): 4.9 - 1.0 - 5.5 - 9.2 - 9.1 - 8.6 - 8.3 - 7.8 - 7.7 - 7.1 - 5.5.

Pronotum in dorsal view about as long as wide, slightly constricted basally and apically, with lateral outlines arcuate in middle; apical and basal margins shallowly emarginated in middle; center of disc raised. Scutellum trapezoidal, with posterior margin shallowly emarginated in middle. Elytra approximately 4.5 times longer than combined humeral width, and 3.1 times longer than head and pronotum combined, in dorsal view slightly constricted on basal third; apex obliquely truncate with acute sutural and marginal angles. Posterior legs with femora reaching level of posterior edge of third abdominal ventrite ( Fig. 1b ) and tibiae approximately 1.6 times as long as tarsi.

Abdominal ventrite VII with shallow triangular medial depression extended on entire length ( Fig. 2d ).

Male genitalia: Tergite VIII densely clothed with short hairs, transverse, apex truncated and shallowly emarginated, broadly ( Fig. 3a ). Tegmen curved in lateral view, lateral lobes elongate and slender, dorsal surface mostly covered with long setae; base of each lateral lobe transversely and obliquely ridged ventrally, those ridges densely furnished with fine hairs ( Fig. 3 b-e). Median lobe 0.9 times as long as tegmen and curved in lateral view; median struts 2/3 as long as median lobe; dorsal plate slightly longer than ventral plate; ventral plate with apex rounded, and median foramen acutely angled ( Fig. 3f ). Endophallus with 2 pairs of slender subapical sclerities, longer pair

Oberea formosana Pic. (a) Habitus, male, from Zhejiang, dorsal view. (b) Lateral view (scale bar = 1.0 mm).

Oberea formosana Pic. (a) Female, abdomen, lateral view. (b) Head of male, frontal view. (c) Head of female, frontal view. (d) Abdominal ventrite VII of male. (e) Abdominal ventrite VII of female (not to scale).

Oberea formosana Pic. male genitalia. (a) Tergite VIII. (b) Tegmen, dorsal view. (c) Tegmen, lateral view. (d) Lateral lobes, dorsal view. (e) Lateral lobes, ventral view. (f) Median lobe, ventral view. (g) Sclerities in endophallus. (a, b, c & f: scale bar = 1.0 mm; d, e & g: scale bar = 0.5 mm).

very slender, baculiform, shorter pair fused at base and 2 times shorter than long one ( Fig. 3g ).

Female: Body 15.0-18.5 mmlongand 2.0-3.0 mmwide. Fronswiderthanthat of male ( Fig. 2c ). Inferior lobes of eyes 1.5 times as long as genae. Antennomeres ratio (fromscapetoapex): 4.5 - 1.0 - 5.3 - 7.9 - 7.9 - 7.5 - 7.4 - 6.9 - 6.6 - 6.3 - 5.8. Abdominal ventrite VII with a narrow medial groove ( Fig. 2e ).

DISTRIBUTION: Bangladesh (newcountryrecord), China (Chongqing, Fujian, Guangdong, Guangxi, Guizhou, Hainan, Henan, Hubei, Hunan, Jiangsu, Jiangxi, Shaanxi, Sichuan, Taiwan, Zhejiang), India (Assam, West Bengal, Sikkim - new countryrecord), Indonesia (Kalimantan), Malaysia (Sabah), Nepal, Korea, Laos, Myanmar, Thailand and Vietnam .

COMMENTS: In China, O. formosana and O. pseudoformosana are easily distinguished from other congeners by their body color pattern in combination with antennae measuring almost 1.5 times the body length and possessing the third antennomere shorter than the fourth. These two species differ however notably by the length of the posterior femora, and their male genitalia are also diagnostic.

The original description is based on an unspecified number of syntypes of both sexes. The two type specimens located in MNHN and here designated as lectotype and paralectotype are in moderate conditions, set dorsally with antennae partly missing .

Figures

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FIG. 3