Ischnomera xanthoderes

Key to the species of the I. xanthoderes complex

1 Claw with a distinct ventral tooth (Fig. 2g, 3c); aedeagus more curved and thicker (Fig. 2e); antennomeres I-II and palpomeres dark ventrally (Portugal, Spain, S France)........................................................ xanthoderes

- Claw without a distinct ventral tooth; aedeagus more straight and slender; antennomere I-II and palpomeres ventrally dark or flavous............................................................................................. 2

2 Male antennomeres distinctly slender and cylindrical, especially VIII-X; antennomeres I-II flavous-brown ventrally; maxillary palpomeres I-II brown dorsally and I-III usually flavous-brown ventrally; pronotum punctures wider and not distinctly approached, intermediate surface shiny (Fig. 4); elytral surface shiny and elytral apex in male more widely rounded; aedeagus elongate (Figs. 1a, 2a); parameres distinctly divergent and almost glabrous (Sicily)......................... sicula n.sp .

- Male antennomeres shorter, especially VIII-X, which are also slightly widened apically, I-II black ventrally; maxillary palpomeres I-II dark black dorsally and I-III black ventrally; pronotum punctures distinctly approached and surface subopaque (Fig. 7a); elytral surface subopaque and elytral apex in male not widely rounded; aedeagus slightly shorter (Figs. 1b, 2c); parameres less divergent and more pubescent (Figs. 1d, 2d) (Morocco, N Algeria, N Tunisia)..................... tenietensis