Xylosandrus mancus (Blandford, 1898)

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

Xylosandrus mancus (Blandford, 1898) Fig. 96A, B, I

Xyleborus mancus Blandford, 1898: 428.

Apoxyleborus mancus (Blandford): Wood 1980: 90.

Xylosandrus mancus (Blandford): Wood 1984: 229.

Xyleborus abruptus Sampson, 1914: 388. Synonymy: Schedl 1951a: 51.

Xyleborus mancus formosanus Eggers, 1930: 186. Synonymy: Schedl 1952b: 61.

Type material.

Holotype Xyleborus mancus (NHMUK).

New records.

China: Chongqing, Chengkou, 16.vii.2016, Tian-Shang (RABC, 1); as previous except: Jinfo Mtn., 9.v.2016, Tian-Shang, Lv-Jia (RABC, 1); as previous except: Simian Mtn., 7.v.2016, Tian-Shang, Lv-Jia (RABC, 1); as previous except: Youyang, 14.v.2016, Tian-Shang (RABC, 1). Hong Kong, Lantau Island, San Shek Wan, v.1988, C. O’Connell (BPBM, 1); as previous except: Tai Po Kau, vi.2017, J. Skelton (MSUC, 1). Laos: CE, Bolimkhamxai, Ban Nape (8 km NE), 18°21'N, 105°08'E, 600 m, 1-18.v.2001, V. Kubáň (RABC, 1). Vietnam: Cao Bang, Phia Oac Hotel, 22°37.702'N, 105°54.5467'E, 847 m, 10-17.iv.2014, VN2, Cognato, Smith, Pham, ex FIT (MSUC, 3). Dong Nai, Cat Tien N.P., 11.40817, 107.38098, 134 m, 22-24.ii.2017, VN82, A.I. Cognato, T.A. Hoang, ex 3 cm diameter branch (MSUC, 1). Tonkin, Hoa-Binh, 1932, A De Cooman (MNHN, 1). Vinh Phuc, Me Linh Biological station, Dai Lai 20-21.iv.2015, 100 m, J.B. Heppner (FSCA, 1). Yen Bai, Mau A’, 21.88226, 104.68040, 29.vi.2015, Pham Thu, ex funnel trap (RJRC, 1); as previous except: Tan Huong, 21.82410, 104.89651, 15.iv.2015, R.J. Rabaglia (RJRC, 1).

Diagnosis.

3.2-3.6 mm long (mean = 3.46 mm; n = 5); 2.13-2.4 × as long as wide. This species is distinguished by its large size; upper part of eye smaller than lower part; elytral disc strongly ascending apically, longer than declivity; declivital face steep, abruptly separated from disc; elytra truncate; posterolateral margins of elytra carinate to suture forming a circumdeclivital ring; declivital face flat, shagreened, four punctate, glabrous and somewhat wavy striae visible; strial punctures large; interstriae glabrous, granulate, granules more abundant near apex (especially between interstriae 1 and 2); declivital posterolateral margin granulate; pronotum as long as wide, from dorsal view rounded (type 1) and lateral view basic (type 0), summit at midpoint, basal 1/2 shiny, densely punctate; and broad, dense mycangial tuft on the pronotal base.

Similar species.

Amasa spp., Xylosandrus amputatus , X. bellinsulanus .

Distribution.

Within the study region recorded from China (Chongqing*, Gansu, Hainan, Hong Kong*, Xizang, Yunnan), India (Karnataka, Kerala), Laos*, Taiwan, Thailand, Vietnam. Outside the region recorded from East Africa (Tanzania), Indonesia (Java, Sumatra), Madagascar, East & West Malaysia, Mauritius, Philippines, Seychelles, Sri Lanka.

Host plants.

Polyphagous ( Dole and Cognato 2010).

Figures

Figure 96. Dorsal, lateral and declivital view of Xylosandrus mancus, 3.2 - 3.6 mm (A, B, I), X. mesuae, 1.3 - 1.7 mm (C, D, J), X. metagermanus holotype, 1.8 - 2.3 mm (E, F, K), and X. morigerus, 1.4 - 2.0 mm (G H, L).