A New Species from Athous (Orthathous) acutangulus Species Group from Turkey

A new Elateridae species, Athous (Orthathous) cagatayae n. sp., is presented from Ankara, Turkey. The morphology of the new species is described. Photographs of imago and aedeagus, aedeagi drawings of the new species, and identification key are given. The new species is discussed with species of acutangulus group, with a differential diagnosis.


Materials and Methods
The body lengths of the specimens were measured along the midline, from the anterior margin of the frons to the apex of elytra. The widths of the specimens were measured across the broadest part of the elytra. Photographs of imago and aedeagus were taken.
The aedeagus of the new species was drawn in detail, and the aedeagi of other species in the group were re-drawn from literature, except for A. (O.) acutangulus, which lacks an aedeagus, and A. (O.) kabalaki, which had an asymmetrical photograph. An identification key of species in the group was prepared as an addition to the identification key of Turkish Orthathous species, which was given by Platia and Gudenzi (1996) Holotype: Male, length 9.56 mm; width 2.57 mm; body dark-brown colored, except for reddish brown antennae, elytral suture, and legs; body covered with slightly long and dense yellowish hairs.
Head, including eyes, as wide as anterior margin of pronotum, and covered with dense umbilicate punctures, with an impression beginning at the vertex and extending to the fronto-clypeal suture; fronto-clypeal suture distinctly convex, without touching the clypeus.
Antenna exceed the apices of the posterior angles of pronotum by about four segments; second segment sub-conical, almost as long as it was wide; third segment triangular, 1.9 times longer than the second, and 1.24 times shorter than fourth; second and third taken together clearly longer than fourth; segments four through seven triangular. Pronotum 1.13 times longer than wide, slightly convex on the disk, with weakly distinct median carina, sides feebly arcuate, posterior angles slightly divergent, not carinate, apex slightly pointed, and lateral margin fully visible in dorsal view; punctuation generally deep, dense, and umbilicate.
Scutellum narrower than the inter-elytral space, longer than wide, convex, deep, and scattered punctuated. Elytra 2.9 times longer than pronotum, 2.5 times longer than wide, sides sub-parallel from proximal to medio-distal and then gradually narrowing towards apex; striae regularly and indistinctly punctured, interstriae feebly convex, coarsely and simple punctured, with rough surface.
Legs with second, third, and fourth tarsal segments nearly regularly decreasing in length; fourth tarsal segment small, in dorsal view as long as half of the third, and as long as one-third of fifth segment.