Ischnomera xanthoderes (Mulsant, 1858)

Bologna, Marco A., Poloni, Riccardo & Vázquez, Xavier A., 2019, A new Ischnomera of the I. xanthoderes (Mulsant, 1858) complex (Coleoptera Oedemeridae) from Sicily, Zootaxa 4671 (4), pp. 541-550 : 548

Ischnomera xanthoderes (Mulsant, 1858)

( Figs. 2 e, f, g , 3c , 7b )

Asclera xanthoderes Mulsant , 188: 232

New records. The numerous new records we examined from Spain and Portugal were included in a map available online (https://www.iucnredlist.org/species/86859903/87312604#geographic-range).

The species was described by Mulsant (1858) based on two specimens, one from Var Department (afterwards probably considered as type locality) and another from Sicily, which actually refers to the I. sicula n. sp. This specimen, not examined by us, could be selected as lectotype after ist examination, now not possible. Several records from the Iberian Peninsula and southern France were published (e.g Mulsant, 1857; Pic, 1898; Mayet, 1903; Caillol, 1919; Magistretti, 1942; Allemand, 1995; Vázquez, 2002; López-Pérez & Vázquez, 2016). Fig. 8 summarizes the numerous records from literature and collections of this species.

Taxonomic remarks. Male genitalia of this species are illustrated in Figs. 2e, f . The aedeagus is more curved and thicker, differently than in the Maghrebian and the Sicilian species. Tarsal claws are distincly hooked ( Figs. 2g , 3c ).

Figures

FIG. 2. Male genitalia and claws: Ischnomera sicula n.sp., aedeagus (a), apical portion of tegmen (b); I. tenietensis, aedeagus (c), apical portion of tegmen (d); I. xanthoderes, aedeagus (e), apical portion of tegmen (f); I. tenietensis, tarsal claws (h); I. xanthoderes, tarsal claws (g). Figures of both I. xanthoderes and I. tenietensis modified from Svihla (1988).

FIG. 3. Tarsal claws: Ischnomera sicula n.sp. (a); I. tenietensis (b); I. xanthoderes (c).

FIG. 7. Habitus: Ischnomera tenietensis (a), I. xanthoderes (b).

FIG. 8. Distribution of the species of the Ischnomera xanthoderes complex: I. xanthoderes, light blue spot; I. tenietensis, green; I. sicula n. sp., red.