Abstract
The species of the subgenus Conocetus Desbrochers des Loges, 1875 are reviewed and Polydrusus (Conocetus) transjordanus sp. nov. is described. Upon examination of the holotype of Polydrusus bardus Gyllenhal, 1834, it was observed that the species hitherto determined sensu auctorum as P. bardus was a misidentification. The specimen in question was therefore unnamed and is thus newly described as Polydrusus (Conocetus) crinipes sp. nov. Polydrusus femoratus (Stierlin, 1888) is a junior synonym of P. angustus (Lucas, 1854). Polydrusus gracilicornis Kiesenwetter, 1864, P. cylindrithorax (Desbrochers des Loges, 1900) and P. quadraticollis (Desbrochers des Loges, 1902) are proposed as junior synonyms of P. bardus. Polydrusus zurcheri (Schilsky, 1912) is proposed as a junior synonym of P. grandiceps (Desbrochers des Loges, 1875). Polydrusus kahri Kirsch, 1865 is transferred from subgenus Conocetus to Denticonocetus subgen. nov., with P. siculus Desbrochers des Loges, 1872 and P. vodozi Desbrochers des Loges, 1903 both recognized as new junior synonyms of P. kahri. The lectotypes of P. gracilicornis, P. zurcheri, P. marcidus Kiesenwetter, 1864, P. gracilis (Stierlin, 1888), P. rhodiacus (Schilsky, 1912) and P. grandiceps are designated. A key, figures, label data and distribution maps are provided for all species, except for P. longus (Stierlin, 1884), for which no specimens were available for examination, and whose placement in the subgenus Conocetus remains uncertain (thus categorized as incertae sedis). Polydrusus angustus is recorded for the first time for Italy, P. rhodiacus for mainland Turkey and P. festae (Solari, 1925) for Greece.
Highlights
Desbrochers des Loges (1875) established the genus Conocetus for three species: Polydrusus bardus Gyllenhal, 1834, P. virens (Kiesenwetter, 1864) and the type species Conocetus grandiceps Desbrochers des Loges, 1875
Conocetus and Denticonocetus subgen. nov. consist of 12 species, all distributed in the Eastern Mediterranean region, except for P. longus (Stierlin, 1884) from Morocco – reported here as incertae sedis
Is an overview of the presently valid species belonging to the subgenera Conocetus and Denticonocetus subgen. nov., as well as their synonyms as proposed here
Summary
Desbrochers des Loges (1875) established the genus Conocetus for three species: Polydrusus bardus Gyllenhal, 1834, P. virens (Kiesenwetter, 1864) and the type species Conocetus grandiceps Desbrochers des Loges, 1875. He later provided a first review of the genus (Desbrochers des Loges 1902), including a determination key, new descriptions and redescriptions of several species. Schilsky (1910) included Conocetus as a subgenus in Polydrusus Germar, 1817 based on the similarity of the head and rostrum with the subgenera Leucodrosus Seidlitz, 1890 (type species P. tibialis Gyllenhal, 1834), Tylodrusus Stierlin, 1884 (type species P. pterygomalis Boheman, 1840) and Eustolus C.G. Thomson, 1859 (at present a senior synonym of Tylodrusus). Conocetus and Denticonocetus subgen. nov. consist of 12 species, all distributed in the Eastern Mediterranean region, except for P. longus (Stierlin, 1884) from Morocco – reported here as incertae sedis
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