Caulomorphus Faust, 1886

Hlaváč, Peter, 2020, Review of the tribe Typoderini (Coleoptera: Curculionidae) from Caucasus with the description of a new species of Caulomorphus from Armenia, Acta Entomologica Musei Nationalis Pragae (Acta. Ent. Mus. Natl. Pragae) 60 (2), pp. 629-638 : 634

Caulomorphus Faust, 1886

( Figs 1c , 5a–f , 6a–c , 7a–e )

Caulomorphus Faust, 1886a: 28 (original description). Rൾංඍඍൾඋ (1913):

53 (key); Oඌൾඅඅൺ (1970): 361 (revision); Oඌൾඅඅൺ (1976): 93 (new

species, key); Aඅඈඇඌඈ-ZൺඋൺඓൺǤൺ & Lඒൺඅ (1999): 195 (catalogue);

Oඌൾඅඅൺ et al. (2003): 690 (new species, new records, key); Aඅඈඇඌඈ-

ZൺඋൺඓൺǤൺ (2013): 488 (catalogue);Aඅඈඇඌඈ-ZൺඋൺඓൺǤൺ (2017): 481

(catalogue); Mඈඋඋඈඇൾ & Hඅൺඏගඹ (2017): 60 (catalogue).

Type species. Styphlus lederi Chevrolat, 1880 by original designation.

Diagnosis. Body parallel-sided, length 3.0– 4.2 mm. Elytra and pronotum lacking erect setae, head slightly longer than pronotum. Eyes reduced to single ommatidium, situated at base of rostrum. Rostrum carinate, densely punctate, scrobes visible dorsally. Antennae slender, scape short, not reaching anterior margin of eyes, funicule with 7 antennomeres, antennomeres II more than 1.4× as long as III. Pronotum lacking carinae or smooth median line, rugosely punctate, simply convergent to apex, postocular lobe absent, scutellum not visible. Elytra elongate, EL/EW ratio> 1.30, interstriae flat, striae with large punctures, apex of each elytron rounded. Procoxae separated, mesocoxae widely separated, ventrite I and II ( Fig. 6h ) separated by sinuate suture, ventrite I clearly longer than II, tarsomere III strongly bilobed, onychium long, at least as long as tarsomeres II and III together. Median lobe of aedeagus symmetrical, with internal sclerites, parameres absent.

Biology. Caulomorphus species are collected by sifting litter in deciduous forest, one female was collected in Armenia by sifting dead wood.

Distribution. Armenia, Azerbaijan, Georgia, Iran, and Turkey.

Remarks. The genus Caulomorphus was revised by Oඌൾඅඅൺ (1970). After that, only three new species were described (Oඌൾඅඅൺ 1976, 1977; Oඌൾඅඅൺ et al. 2003). Catalogue of all species was provided by Mඈඋඈඇඇൾ & Hඅൺඏගඹ (2017). Currently the genus contains twelve species including the new one described in this paper.

Females of Caulomorphus are not possible to be reasonably identified if they are not collected together with males; the study of the aedeagus is inevitable for the correct species identification.

Figures

Fig. 1. Dorsal habitus. a – Adexius scrobipennis Gyllenhal, 1834; b – Anchonidium caucasicum Motschulsky, 1845; c – Caulomorphus kociani sp. nov.; d – Anchonidium perpensum Faust, 1886; e – Aparopion costatum (Fåhraeus, 1843); f – Pseudaparopion kadleci Borovec, Osella & Zuppa, 2002.

Fig. 5. Caulomorphus besucheti Osella, 1970: a – aedeagus, dorsal view; b – aedeagus, lateral view; c – sternite IX and hemisternites; Caulomorphus talyschensis Reitter, 1897: d – aedeagus, dorsal view; e – aedeagus, lateral view; f – sternite IX and hemisternite. Scale bars: 0.2 mm.

Fig. 6. Caulomorphus kociani sp. nov. a – aedeagus, dorsal view; b – aedeagus, lateral view; c – sternite IX and hemisternites.Scale bars:0.2 mm.

Fig. 7. Caulomorphus kociani sp. nov., a – antenna; b – abdominal ventrites I–V; c – spermatheca; d – sternite VIII; e – gonocoxite. Scale bars: 0.2 mm.