Sueus granulatus ( Eggers, 1936 )

Cognato, Anthony I., Smith, Sarah M., Schiffer, Matthew & Li, You, 2024, A taxonomic review of Sueus Murayama, 1951 ambrosia beetles (Coleoptera: Curculionidae: Scolytinae: Hyorrhynchini) aided by molecular phylogenetic analyses, Zootaxa 5477 (4), pp. 475-493 : 484

Sueus granulatus ( Eggers, 1936) , stat. res., new combination

Fig. 5

Hyorrhynchus granulatus Eggers, 1936: 80 .

Type material. Holotype, female, [ Indonesia] Java, Buitenzorg , II. 1924, 250m, L.G.E. Kalshoven ( NHMW) (photographs examined).

New records. China: Guangxi, Shangsi , Shiwandashan, N 22.15, E107.98, 27iii2018, You Li (1, UFFE) . Vietnam: Dong Nai Prov., Cat Tien NP, 11.42232, 107.42834, 128 m. 25.iii.2017, AI Cognato, TA Hong, ex 1–3 cm dia. branch (3, MSUC) .

Diagnosis. Length 2.5–3.0 mm (2.9–3.4mm when including tergite 8), 2.43–2.5 × longer than wide; declivital interstriae bearing rows of nearly contiguous large rounded granules, clearly visible above setae in lateral profile.

Distribution. China * (Guangxi), Indonesia (Java), Vietnam * (Dong Nai).

Hosts. Unknown. Presumably mycetophagous.

Remarks. Eggers’ (1936) original description states that the type was deposited in the Kalshoven collection, however it is part of the Schedl collection in NHMW.

Wood & Bright (1992) attributed the synonymy of H. granulatus and H. drescheri Eggers with H. lewisi Blandford , to Schedl (1962). However, this was a misinterpretation of Schedl’s (1962) generic grouping of these species. Inspection of images of type specimens revealed that the granulate elytral declivity is only diagnostic for H. granulatus . As with Beaver & Liu (2010) and M. Knižek (in Beaver & Liu 2010), we recognize this dissimilarity and we remove H. granulatus from synonymy with H. lewisi . Furthermore, generic level diagnostic characters, especially the shape of the antennal club, are consistent with those of Sueus .

Figures

FIGURE 5. Sueus granulatus female (MSUC_ARC_320283), 2.43 mm A) dorsal view; B) lateral view; C) frons; D) posterolateral view.