Philhammus, FAIRMAIRE, 1871

Nabozhenko, M. V., Bekchanov, N. Kh. & Bekchanov, Kh. U., 2023, A new species of the genus Philhammus Fairmaire, 1871 (Coleoptera: Tenebrionidae) from Uzbekistan, Far Eastern Entomologist 481, pp. 1-6 : 5

Key to the Middle Asian species of the nominotypical subgenus of Philhammus

1. Eyes weakly convex dorsally ( Fig. 4 ). Lamellar part of genae very narrow, accommodates only one row of acute granules ( Fig. 4 ). Lateral margin of genae angular basally (rarely this angular edge of genae can be worn away as a result of fossorial activity) and weakly rounded from widest part to epistoma ( Fig. 4 ). Base of pronotum widely rounded, median basal convexity not protruded back and not divided by deep longitudinal depression ( Figs 4, 6 ). Elytra shorter, 1.47–1.55 time as long as wide (n=20) ( Fig. 2 ) ............................... .................................................................................................. Ph. zaitsevi G.S. Medvedev

– Eyes strongly convex ( Fig. 3 ). Lamellar part of genae very wide, accommodates three lines of acute granules ( Fig. 3 ). Lateral margins of genae strongly evenly rounded ( Fig. 3 ). Base of pronotum trisinuate, median basal convexity strongly protruded back and divided by deep longitudinal depression ( Figs 3, 5 ). Elytra longer, 1.6 times as long as wide ( Fig. 1 ) ........................................................... Ph. dilaramae Nabozhenko et N. Bekchanov , sp. n.

Figures

Figs 1–6. Philhammus (s. str.) spp. of Middle Asia: 1, 3, 5 – Ph. dilaramae sp. n.; 2, 4, 6 – Ph. zaitsevi; 1, 2 – habitus; 2, 3 – head and pronotum dorsally; 5, 6 – head and pronotum dorso-laterally. Scale bare for figs 3–6 = 0.5 mm.