Discussion. Xylotrechus iranicus n. sp. is close to Xylotrechus arvicola (Olivier, 1795) and Xylotrechus antilope (Schoenherr, 1817) and it is a middle way between these two species. It is close to Xylotrechus bitlisiensis Marklund & Marklund, 2013 as well. The latter is a new species described from Eastern Turkey (Bitlis) close to Xylotrechus antilope. It is easy to distinguish from Xylotrechus arvicola by the thinner bands, the curved band is angular instead rounded curved and the humeral spot is oblique instead horizontal. Shoulders are black and in X. arvicola are brown covered by yellow pubescence. The sculpture of the middle of pronotum is not so strong as in X. arvicola. The elytra are narrower towards the apex than in X. arvicola. From X. antilope it is easy to distinguish according the wider bands, the shape of pronotum, globular in X. antilope and stronger sculptured than in the new species. The post-median stripe is concave towards the apex instead elongate along the suture as in X. antilope. The antennae are shorter in the new species. From X. bitlisiensis it is easy to distinguish for the slender legs, the pronotum without a very strong sculpture, the curved band is angulate in the new species and regular curved in X. bitlisiensis. X. iranicus n. sp. misses a yellow spot on the humeral lateral side, well-marked in X. bitlisiensis.
[Rapuzzi, P. & Sama, G. 2014. Descriptions of nine new species of longhorn beetles (Coleoptera: Cerambycidae). Munis Entomology & Zoology, 9 (1): 1-16]