Ancistronycha Märkel

Kazantsev, Sergey, 2005, A Review of Ancistronycha Märkel with the Description of Atalantycha, a New Nearctic Genus (Coleoptera: Cantharidae), The Coleopterists Bulletin 59 (2), pp. 204-210 : 206-207

Key to Species of Ancistronycha Märkel of the World

(Due to the need to use characters from the male genitalia to differentiate several species, it is not possible to readily differentiate unassociated females of Ancistronycha in the key) 1. Elytra rufous, with only their apices black, or uniformly shining black - - - - - - - - - - - - - 2

– Elytra black, with a metallic bluish tint - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3

2. Aedeagus with apically convex laterophyses, their inner angles rounded ( Fig. 2 ) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A. erichsonii Bach

– Aedeagus with apically concave laterophyses, their inner angles pronounced and acute ( Fig. 3 ) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A. lucens Moscardini

3. Head behind eyes dorsally always black - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4

– Head behind eyes at least partly testaceous. Dorsal plate of aedeagus with apical margin deeply incised, its blades wide and elongate ( Fig. 6 ) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A. violacea (Paykull)

4. Dorsal plate of aedeagus only slightly emarginate at apical margin ( Fig. 4 ) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A. occipitalis (Rosenhauer)

– Dorsal plate of aedeagus deeply incised apically ( Fig. 5 ) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5

5. Head completely black. Pronotum black, with only lateral margins testaceous. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A. astur Heyden

– Anterior part of head and pronotum mostly testaceous - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A. abdominalis (Fabricius)

Figures

Figs. 1–6. Protarsal claw and aedeagi (without median lobe) of Ancistronycha. 1–2) A. abdominalis (Fabricius); 1) female, protarsal claw; 2) male, aedeagus, dorsal view; 3) A. erichsonii Bach, aedeagus, dorsal view; 4) A. lucens Moscardini, aedeagus, dorsal view; 5) A. occipitalis (Rosenhauer), aedeagus, dorsal view; 6) A. violacea (Paykull), aedeagus, dorsal view. Scale: 0.5 mm.