81. Debus fallax (Eichhoff)

Xyleborus fallax Eichhoff, 1878a: 392 .

Debus fallax (Eichhoff): Hulcr, 2010: 109.

Xyleborus fastigatus Schedl 1935a: 402 . Synonymy: Hulcr & Cognato 2010: 15.

Thai distribution: N: Chiang Mai, Tak; S: Nakhon Sri Thammarat, Surat Thani, Trang (Beaver 1999 as Xyleborus fallax).

New records: Chiang Mai, Queen Sirikit Botanic Garden, 18 o 53' 21.1'' N, 98 o 51' 40.1'' E, 788 m, MV light, 15.ix.2006 (J. Phasuk, W. Srisuka et al.) (1); Nakhon Sri Thammarat, Khao Luang NP, headquarters, 08° 22' 21.6'' N, 99° 44' 14.7'' E, 196 m, EtOH trap, various dates from 01.iii.2010 – 30.vi.2011 (W. Sittichaya) (69); Namtok Yong NP, 8° 10.434' N, 99° 44.508' E, 80 m, pan trap, 27–31.vii., 9–10.ix.2008 (U-prai, K.) (7); as previous except: MT, 5–12.ix., 23–30.ix.2008 (2); Surat Thani, Khao Sok NP, Headquarters, 8° 54.896' N, 98° 31.81' E, 115 m, MT, 24–31.viii.2008 (Buathong, S.) (1); as previous except: pan trap, 15–16.x.2008 (Pongphan) (1); Tak, Umphang Distr., Thung Yai WS, Song Bae stream, 15 o 28' N, 98 o 48' E, 300 m, evergreen rain forest, 18–27.iv.1988 (M. J. D. Brendell) (4) .

Other distribution: From India (Assam) and Nepal through Southeast Asia and Indonesia to New Guinea, the Solomon Islands and Australia. Frequently intercepted in Japan in timber imported from the region. (4)

Taxonomy: The original reference given by Wood and Bright (1992) is incorrect. The correct reference is given above. Hulcr (2010) considers Debus shoreae (Stebbing) to be a synonym of this species, but we prefer to keep them as separate species (see D. shoreae for distinguishing characters).

Biology: Strongly polyphagous (Browne 1961 a, Ohno 1990). The gallery system resembles that of D. emarginatus (see above).

Illustrations: P (Hulcr 2013, PaDIL 2014); D (Nunberg 1978 as Xyleborus fallax).