Diuncus javanus (Eggers)

Beaver, R. A., Sittichaya, W. & Liu, L-Y., 2014, A Synopsis of the Scolytine Ambrosia Beetles of Thailand (Coleoptera: Curculionidae: Scolytinae), Zootaxa 3875 (1), pp. 1-82 : 46

publication ID	https://doi.org/ 10.11646/zootaxa.3875.1.1
publication LSID	lsid:zoobank.org:pub:66613335-DA8E-4EE7-A0A4-5FE405B15437
DOI	https://doi.org/10.5281/zenodo.5130939
persistent identifier	https://treatment.plazi.org/id/11038800-FFC2-FFB3-FF41-3727696B084D
treatment provided by	Felipe
scientific name	Diuncus javanus (Eggers)
status

Treatment

87. Diuncus javanus (Eggers) *

Xyleborus javanus Eggers, 1923: 188 View in CoL .

Diuncus javanus (Eggers) : Hulcr & Cognato 2009: 32 View Cited Treatment .

Thai distribution: C: Nakhon Nayok; N: Phetchabun; S: Chumphon, Nakhon Sri Thammarat, Surat Thani. New to Thailand.

New records: Chumphon, Thung Tako Distr., 10° 02' 21.8'' N, 98° 59' 13.5'' E, 107 m, durian plantation, EtOH trap, 1.i.2010 (W. Sittichaya) (2); GoogleMaps Nakhon Nayok, Khao Yai NP, Lam Takong view point, 14° 25.82' N, 101° 23.754' E, 744 m, MT, 5–12.x.2006 (W. Sook-kho) (1); GoogleMaps as previous except: Valley at entrance of Huay Pak Chee, 14° 27.115' N, 101° 21.951' E, 733 m, 19–26.xi., 26.xi.–3.xii.2006 (2); GoogleMaps Nakhon Sri Thammarat, Chang Klang Distr. , 08° 21' 33.7'' N, 99° 39' 02.9'' E, 60 m, Durian plantation, EtOH trap, 1.ix.2009 (W. Sittichaya) (4); GoogleMaps Khao Luang NP, headquarters, 08° 22' 21.6'' N, 99° 44' 14.7'' E, 196 m, EtOH trap, 1.iii.2010 (W. Sittichaya) (4); GoogleMaps Namtok Yong NP, 8° 10.434' N, 99° 44.508' E, 80 m, MT, 16–23.ix.2008 (U-prai, K.) (1); GoogleMaps Phetchabun, Thung Salaeng Luang NP, Kaeng Wang Nam Yen, 16° 36.587' N, 100° 53.395' E, MT,16–22.xi., 22–29.xi.2006 [no collector] (2); GoogleMaps Surat Thani, Rajaprapa reservoir, ex cut liane, 24.ii.2012 ( R. A. Beaver) (1) GoogleMaps .

Other distribution: Indonesia (Java, Sumatera), Malaysia (E. & W.). Intercepted in Japan in timber from the region. The species also occurs in Brunei Darussalam, Indonesia (Sulawesi), and the Philippines (R. A. Beaver, unpublished records). (3)

Biology: Polyphagous ( Kalshoven 1959, Browne 1961a). It attacks both small branches and larger logs. The form of the gallery system depends on the size of the breeding material, but branches in three dimensions, and has no distinct brood chambers ( Browne 1961a). A sex ratio of 1♂: 10.4 ♀ is recorded by Kalshoven (1959).

Illustrations: D ( Nunberg 1959 as Xyleborus javanus ).