Abstract
The species group formerly included in the genus Syleter Andrewes, 1941 from the Oriental region is redefined resulting in the split of three genera, the original genus Syleter and two new genera, Parasyleter gen. nov. and Clypeuspinus gen. nov. Genus descriptions of the three genera and an identification key to the three genera is provided. Type species for the three genera are either re-established or designated and illustrations are provided for all of them. The genus Syleter is revised. The species Syleter acutipalpis (Putzeys) is resurrected to species status from synonymy with S. paradoxus (Putzeys). For S. acutipalpis a lectotype has been designated in order to maintain nomenclatural stability. The following new taxa are described: S. sinepunctatus sinepunctatus sp. nov., S. sinepunctatus kluangensis ssp. nov., and S. gradus sp. nov. A key to the Syleter species is provided. The genus Clypeuspinus gen. nov. is represented by one species, C. validus (Andrewes) comb. nov., which is redescribed.
Highlights
The genus Syleter Andrewes, 1941 occurs in the Oriental and Ethiopian region
Two more species were described from Sri Lanka (Andrewes, 1936) and Papua New Guinea (Darlington, 1962)
The evaluation suggested a better discrimination of the two species groups and demonstrated the necessity to split the genus Syleter into the two genera characterized in this contribution
Summary
The genus Syleter Andrewes, 1941 occurs in the Oriental and Ethiopian region. It is not well represented in museum and private collections. For Oriental members, the genus was keyed out with five species by Andrewes (1927, 1929) under the name Psilus Putzeys, 1877. The Oriental members were keyed out, a catalogue of the species was provided, and two groups, the paradoxus-species group and the doriae-species group, were distinguished (Balkenohl, 2001). Comparisons with members of other genera of the tribe showed that the species does not match with any genus description.
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