Psammocryptus, Kraatz, 1865

Nabozhenko, Maxim V. & Chigray, Ivan A., 2022, A review of the genus Psammocrуptus (Coleoptera: Tenebrionidae: Tentyriini), Acta Entomologica Musei Nationalis Pragae 62 (1), pp. 165-184 : 182-183

publication ID	https://doi.org/ 10.37520/aemnp.2022.013
publication LSID	lsid:zoobank.org:pub:CA6AF6AD-9E4A-4BE3-8B52-6D8E5EA3641F
persistent identifier	https://treatment.plazi.org/id/143B327D-3675-FFB2-FCC7-FBED2DDFCFB1
treatment provided by	Felipe
scientific name	Psammocryptus
status

Treatment

Key to species of the genus Psammocryptus

Note. Species of Psammocryptus have an external sexual dimorphism: males bear a small brush of setation on the flexion side of the femora, and they have a transverse furrow in the anterior part of the prosternum, in contrast to females. However, other characters of males and females are the same; therefore, we do not give separate keys for males and females.

1 Mesoventrite with large, foveolate, round punctures ( Fig. 14F View Fig ). Puncturation of pronotum fine and sparse, consists of round punctures ( Fig. 14A View Fig ). ...................... ....................................... P. prosternalis Koch, 1943

– Mesoventrite with large or moderate, foveolate, longitudinal punctures ( Figs 4C View Fig , 6C View Fig , 9C View Fig , 11C View Fig , 13C View Fig ). Puncturation of pronotum coarse and dense (or moderately dense), punctures elongate on sides of middle. ........ 2

2 Abdominal ventrite 5 shortly truncated at apex ( Figs 13C, D View Fig ). Female metatibiae moderately or strongly curved inwards ( Fig. 12D View Fig ). Puncturation of pronotum finer but very dense, punctures on sides of middle often merged in longitudinal wrinkles ( Fig. 12A View Fig ). ......... ..... P. kompantsevae Nabozhenko & Chigray , sp. nov.

– Abdominal ventrite 5 rounded at apex ( Figs 4D View Fig , 6D View Fig , 9D View Fig , 11D View Fig ). Metatibiae straight or very weakly curved. Puncturation of pronotum coarser, punctures on sides elongate, but not merged in longitudinal wrinkles ( Figs 3A View Fig , 5A View Fig , 8A View Fig , 10A View Fig ). .................................................... 3

3 Ventral side of head with very deep tunnel fovea in middle continuing under prementum ( Fig. 5B View Fig ). Prosternal process without conical tubercle at apex ( Fig. 6B View Fig ) (except for population from Fergana valley with the majority specimens having conical tubercle; in this case anterior corners of pronotum widely rounded at apex ( Fig. 6A View Fig )). .................................................. P. bogatchevi Nabozhenko, Chigray & Bekchanov , sp. nov.

– Ventral side of head without deep foveae, only with simple wide transverse depression behind prementum ( Figs 3B View Fig , 8B View Fig , 10B View Fig ). Prosternal process with conical tubercle at apex (4B, 9B, 11B) (very rarely this tubercle not developed in P. minutus ; in this case anterior corners of pronotum pointed and other characters as in P. minutus below). ......................................................... 4

4 Anterior margin of head without emarginations between genae and epistoma on each side ( Fig. 4A View Fig ). Pronotum widest in middle ( Fig. 3A View Fig ). Body more robust. .............................. P. minutus ( Tauscher, 1812)

– Anterior margin of head with obtuse emarginations between genae and epistoma on each side ( Figs 9A View Fig , 11A View Fig ). Pronotum widest before middle ( Figs 8A View Fig , 10A View Fig ). Body slender. ............................................................ 5

5 Mandibles with dense and coarse puncturation ( Fig. 9B View Fig ). Pronotum with rounded antero-lateral corners ( Fig. 9A View Fig ). Mesoventrite with smaller, longitudinal, foveolate punctures (near four rows with 14–17 punctures each) ( Fig. 9C View Fig ). Strial punctures on elytra large, not impressed; puncturation of interstriae fine and sparse, but coarser, punctures distinct ( Fig. 8C View Fig ). Elytra shiny ( Fig. 8A View Fig ). Abdominal ventrites 1–4 with fine and sparse puncturation in middle; ventrite 5 with much coarser and denser puncturation ( Fig. 9D View Fig ). ........................ ..................................... P. bayeri bayeri Koch, 1943

– Mandibles with sparse smoothed puncturation ( Fig. 11B View Fig ). Pronotum with pointed antero-lateral corners ( Fig. 11A View Fig ). Mesoventrite with very large, longitudinal, foveolate punctures (near four rows with 9–12 punctures each) ( Fig. 11C View Fig ). Strial punctures on elytra small, impressed; puncturation of interstriae very fine and sparse, weakly visible ( Fig. 10C View Fig ). Elytra matt ( Fig. 10A View Fig ). Abdominal ventrites completely with very fine and sparse puncturation ( Fig. 11D View Fig ). ............ P. bayeri vachshianus Nabozhenko & Chigray , subsp. nov.