New data of Ocys tachysoides (Antoine, 1933) in the Iberian Peninsula and discussion about its morphological distinction from Ocys harpaloides (Audinet-Serville, 1821) (Coleoptera, Carabidae)
DOI:
https://doi.org/10.3989/graellsia.2021.v77.313Keywords:
Bembidiini, character expression, chorology, Iberian Peninsula, new records, Ocys, Ocys tachysoides, Ocys harpaloidesAbstract
Ocys tachysoides (Antoine, 1933) and Ocys harpaloides (Audinet-Serville, 1821) are two close-related species whose distinction was difficult before the publication of some recent works. While O. harpaloides is well known in the Iberian Peninsula, scarce data of O. tachysoides are available (only four records have been published). We hypothesized that O. tachysoides has been largely misidentified with O. harpaloides in the territory. To test this hypothesis, Iberian collections material of O. harpaloides and Ocys sp. were studied and (re) identified to species level based on the currently known diagnostic characters (genitalia and external traits). The hypothesis was supported, as a total of 9 wrong or non-previously identified samples of O. tachysoides were noticed. Thus, and together with three recent captures in Central Spain, 11 new records of O. tachysoides are provided. Our results suggest that, at least in the Iberian populations, the morphology of the male and female genitalia and the microsculpture pattern are consistent diagnostic characters. On the contrary, rare expressions of elytra coloration, elytra shape and shape of the hind angles of pronotum occurs in both species. The actualized chorology of O. tachysoides shows that the species is present in Central and North-West Spain and in North and Central Portugal, in temperate and relatively high humid regions (frequently with mountainous and forest habitats). Future studies are necessary to assess the real distribution and autecology of O. tachysoides.
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