Glyptosomus hardenbergi ( Marshall, 1923 ) Borovec & Skuhrovec, 2017

Borovec, Roman & Skuhrovec, Jiří, 2017, Systematic position of the Afrotropical species described in Trachyphloeini (Coleoptera: Curculionidae: Entiminae), Zootaxa 4344 (3) : -

Glyptosomus hardenbergi ( Marshall, 1923) , comb. n.

( Fig. 2A )

Trachyphloeus hardenbergi Marshall, 1923: 542 (original description).

Trachyphloeus hardenbergi: Lona, 1937: 324 (catalogue); Borovec & Meregalli, 2013: 501 (note).

Type locality. Portuguese East Africa [ Mozambique]: Umbelusi.

Material examined. Lectotype (here designated): 1 spec. (BMNH), ‘Type [p, circular label with red margins] / Portuguese E. Africa [p] / Pres. by Imp. Bur. Ent. Brit. Mus. 1923-253 [p] / Umbelusi III. 11.21. P. E. A. C. B. Hardenberg [p] / Trachyphloeus hardenbergi Mshl. TYPE [hw] / LECTOTYPUS Trachyphloeus hardenbergi Marshall R. Borovec des. 2006 / Glyptosomus hardenbergi ( Marshall, 1923) , comb. nov., R. Borovec & J. Skuhrovec det. 2017’ [p]. Paralectotypes: 4 spec. (BMNH), same labels as lectotype but the fourth with different date ‘III. 24.21.’, fifth label missing and last reading ‘PARALECTOTYPUS’; 1 spec. (RMCA), ‘PARATYPUS [red label, p] / Umbelusi III.11.21. P. E. A. Hardenberg [p] / MUSÉE DU CONGO (don Marshall) [partly p, partly hw] / R. dét. uu 3910 [p] / Trachyphloeus hardenbergi Mshl. COTYPE [hw], PARALECTOTYPUS Trachyphloeus hardenbergi Marshall R. Borovec & J. Skuhrovec des. 2017 / Glyptosomus hardenbergi ( Marshall, 1923) , comb. n., R. Borovec & J. Skuhrovec det. 2017’ [p].

Remarks. Marshall (1923) denoted this species as “distinguished from all the known South African species by the uneven elytral intervals”. His description of the species is based on sixteen specimens from Umbelusi in Mozambique. The lectotype is 3.25 mm long. Three paralectotypes were dissected and remounted (with the genitalia mounted on the same label). The types have the rostrum separated from the head by sharp V-shaped sulcus, the metatibiae with slender squamose corbels and the tarsal claws connate in the basal half, and on the base of these characters we place it in the tribe Embrithini . It is tranferred to Glyptosomus Schoenherr, 1847 based on the following characters: epifrons with well defined and visible borders along the whole length, at base as wide as space between anterior margins of eyes, laterally prominent posthumeral calli and abdominal ventrite 1 in middle somewhat longer than ventrites 2–4 combined.

Figures

FIGURE 2. A — Glyptosomus hardenbergi (Marshall, 1923), habitus, male, dorsal view. B — Glyptosomus notulatus (Boheman, 1842), habitus, male, dorsal view, Lectotype, and its labels. Scale bar: 1 mm.