Dryocoetiops semigranulatus (Schedl)

Beaver, Roger A., Smith, Sarah M. & Sanguansub, Sunisa, 2019, A review of the genus Dryocoetiops Schedl, with new species, new synonymy and a key to species (Coleoptera: Curculionidae: Scolytinae), Zootaxa 4712 (2), pp. 236-250 : 246-247

Dryocoetiops semigranulatus (Schedl)

(Figs 34–37)

Dryocoetes semigranulatus Schedl 1936: 10 .

Dryocoetiops semigranulatus (Schedl) : Schedl 1964: 308.

Dryocoetes kepongi Schedl 1953: 296 syn. n.

Taxonomy. We have examined a syntype of D. semigranulatus from Java (NMW) and compared it directly to a syntype of D. kepongi from West Malaysia (NHML), and to other specimens in RABC. The species is distinguished from other species of Dryocoetiops by the characters of the pronotum. The asperities on the anterior slope are small, and more densely placed than in other species, and do not increase in size anteriorly and towards the antero-lateral angles (Fig. 35). The pronotal summit lies slightly behind the middle, so that the anterior slope of the pronotum is more oblique than in other species, except schultzei. Schedl (1953) distinguished D. kepongi from D. semigranulatus by the ‘greater size, the pronotum more slender, and the summit of the latter not so far behind’. However, comparisons indicate some variation and overlap in all these characters. Hence, D. kepongi is placed in synonymy with D. semigranulatus . The species seems to have been frequently confused with D. moestus , and we have included only specimens that we have examined in the distribution listed below. As noted above, Pseudopoecilips taradakensis is not a synonym of this species but of D. moestus , contrary to Beaver (2011).

Distribution. Indonesia (Java), Malaysia (W.), Thailand. The record of the species (as D. kepongi ) from Taiwan in Beaver and Liu (2010) should be referred to D. moestus .

New Record. THAILAND, Chumphon Pr., EtOH trap in durian plant[atio]n, 1.ii.2010 (W. Sittichaya) (1) .

Biology. One specimen was collected by RAB from the petiole of a fallen leaf of Artocarpus lanceifolius (Moraceae) in Pulau Pinang, West Malaysia. Because of errors in identification in published papers, it is not certain which host records in the literature actually appertain to this species. Most probably refer to D. moestus .