Euwallacea similis (Ferrari, 1867)

Smith, Sarah M., Beaver, Roger A. & Cognato, Anthony I., 2020, A monograph of the Xyleborini (Coleoptera, Curculionidae, Scolytinae) of the Indochinese Peninsula (except Malaysia) and China, ZooKeys 983, pp. 1-442 : 1

Euwallacea similis (Ferrari, 1867) Fig. 58E, F, K

Xyleborus similis Ferrari, 1867: 23.

Wallacellus similis (Ferrari): Hulcr and Cognato 2010a: 29.

Euwallacea similis (Ferrari) Storer et al. 2015: 396.

Bostrichus ferrugineus Bohemann, 1858: 88. Preoccupied by Fabricius (1801). Synonymy: Schedl 1960a: 11.

Xyleborus parvulus Eichhoff, 1868b: 152. Synonymy: Schedl 1959: 505.

Xyleborus dilatatus Eichhoff, 1878b: 393. Synonymy: Schedl 1959: 505.

Xyleborus submarginatus Blandford, 1896b: 223. Synonymy: Eggers 1929: 48.

Xyleborus bucco Schaufuss, 1897: 212. Synonymy: Schedl 1959: 505.

Xyleborus capito Schaufuss, 1897: 215. Synonymy: Schedl 1959: 505.

Xyleborus novaguineanus Schedl, 1936b: 530. Synonymy: Wood 1989: 177.

Xyleborus dilatatulus Schedl, 1953a: 127. Synonymy: Wood 1989: 177.

Type material.

Lectotype Xyleborus bucco (NMNH). Lectotype Xyleborus capito (NMNH).

New records.

China: Chongqing, Gele Mtn, 5.v.2016, Tian-Shang, Lv-Jia, ex Broussonetia sp. (RABC, 1). Hong Kong, Tai Po Kau, vi.2017, J. Skelton (MSUC, 1). India: Assam-Arunachal Pradesh border, Bhalukpong, 27°00'48"N, 92°39'08"E, 150 m, 1-8.v.2012, L. Dembický, ex FIT (ZFMK, 5). Laos: Bolikhamxai, Ban Nape, 18°20'N, 105°08'E, 500 m, 1-18.v.2000, P. Pachlolátoko (NHMP, 4). Khammouane, Hin Boun river, Ban Nathan, Camp de l’Agame, 17°59.645'N, 104°49.352'E, IBCFL, Operation Canopée, 7.v.2012, H.-P. Aberlenc (RABC, 2). Luang Namtha, Tong On village, 47Q 0750111, UTM 2321825, 552 m, 1.v.2005, N. Jönsson, T. Malm, B. Viklund, ex light trap (SMNH, 1). Vientiane, 10 km N Luang-Prabang, Mekhong river, 240 km N Vientiane, hills c. 250 m, poor settlem[ent], prim[ary] veget[ation] lux, iii.1993, Insomsay Somsy (MFNB, 18); as previous except: iv.1993 (MFNB, 30); Ban Van Eue, 31.xii.1965, native collector (BPBM, 2); as previous except: Vientiane city, Donchan sand dune in Mekong river, 17°57.4'N, 102°36.5'E, ~ 180 m, J. Hájek (NHMP, 1); N, 10 km N Luang Prabang, Mekong river, 240 km N. Vientiane, hilly country, sparse, settled primary vegetation, xii.1992, I. Somsy (NKME, 1). Vietnam: Bach Kan, Ba Be N.P., cabins, 255 m, 20-24.ix.2013, J.B. Heppner (FSCA, 2). [Da Lak], 10 km E of BanME Thout [sic] [= Buon Ma Thout], 570 m, 7.v.1960, R.E. Leech (BPBM, 1). Dong Nai, Cat Tien N.P., 11.46050, 107.37375, 379 m, 22.ii.2017, VN94, A.I. Cognato, T.A. Hoang, ex under bark; 30 cm diameter (MSUC, 91); as previous except: ecology trail, 11°26'22"N, 107°24'58"E, 120 m, 28-31.v.1999, D.C. Darling, N. Tatamic, VIET1H95-99 042, ex pan trap (SEMC, 1). Hatay, Ba Vi Nat. Pk, 455 m, 19-23.vii.2010, J.B. Heppner, Y.S. Bae (FSCA, 1). Tonkin, Hoa-Binh, 1929, A. De Cooman (MNHN, 1). Ninh Binh, Doi Vac, Cuc Phuong, 10-16.ix.2013, J.B. Heppner (FSCA, 11). Thua Thien-Hue, Bach Ma N.P., 16.22897, 107.85349, 415 m, 15.ii.2017, VN55, A.I. Cognato, T.A. Hoang, ex 5 cm diameter branch (MSUC, 1). Ninh Binh, Cuc Phuong N.P., Mac Lake, 20°15'29.0"N, 105°42'27.5"E, 155 m, 4-7.v.2009, J.B. Heppner, ex blacklight trap (FSCA, 1). Vinh Phuc, Me Linh Biodiversity Station, Dai Lai Lake, 100 m, 27-29.ix.2013, J.B. Heppner (FSCA, 3); as previous except Tam Dao (SE), 25-31.vii.2010, 985 m, J.B. Heppner (FSCA, 1). Yen Bai, Tan Huong, 21.82410, 104.89651, 30.viii.2015, Pham Thu, ex funnel trap (RJRC, 1).

Diagnosis.

2.3-2.5 mm long (mean = 2.42 mm; n = 5); 2.88-3.13 × as long as wide. This species is distinguished by declivital interstriae 1 laterally broadened, bearing a large median tubercle and several small granules (rarely median tubercles absent); small body size and elongate form; and red brown color.

Similar species.

Euwallacea piceus , Planiculus spp., Xyleborus affinis , X. cognatus , X. ferrugineus , X. perforans , X. volvulus .

Distribution.

Throughout the Oriental region from the Indian subcontinent through southeast Asia and Indonesia to New Guinea, Australia, and the Pacific islands; tropical Africa, Indian Ocean islands. Recorded in the study area from Bangladesh, Cambodia, China (Chongqing*, Guangdong, Hainan, Hong Kong*, Yunnan), India (Andaman Is, Assam, Jharkhand, Karnataka, Madhya Pradesh, Nicobar Is, Sikkim, Tamil Nadu, Uttarakhand, Uttar Pradesh, West Bengal), Laos*, Myanmar, Nepal, Taiwan, Thailand, Vietnam. Introduced to the US ( Rabaglia et al. 2006; Gomez et al. 2018a) and Central and South America ( Wood 2007).

Host plants.

Strongly polyphagous ( Browne 1961b; Schedl 1963a).

Remarks.

The biology of the species is discussed by Browne (1961a, 1968), Kalshoven (1964) and Schedl (1963a).

Figures

Figure 58. Dorsal, lateral and declivital view of Euwallacea semirudis, 3.1 - 3.3 mm (A, B, I), E. sibsagaricus, 3.4 - 3.9 mm (C, D, J), E. similis, 2.3 - 2.5 mm (E, F, K), and E. subalpinus holotype, 2.4 mm (G, H, L).