Anchonidium Bedel, 1884

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 : 632

Anchonidium Bedel, 1884

( Figs 1b, 1d , 4a–f )

Anchonidium Bedel, 1884: 92 (original description). Rൾංඍඍൾඋ (1913): 53

(key); Oඌൾඅඅൺ (1979): 348 (illustration of aedeagus, new records);

Aඅඈඇඌඈ-ZൺඋൺඓൺǤൺ & Lඒൺඅ (1999): 195 (catalogue); Aඅඈඇඌඈ-Zൺ-

උൺඓൺǤൺ (2013): 496 (catalogue); Aඅඈඇඌඈ-ZൺඋൺඓൺǤൺ (2017): 490

(catalogue).

( Fig. 2a ), antennomeres II and III of about same length. Pronotum lacking carinae or smooth median line, rugosely punctate, constricted before apex, postocular lobe absent, scutellum not visible. Elytra wide, EL/EW ratio <1.25, interstriae flat, striae with large punctures, apex of elytron rounded. Procoxae contiguous, mesocoxae widely Type species. Styphlus unguicularis Aubé, 1850 by original designation.

Diagnosis. Body oval ( Figs 1b, 1d ), length 2.70–3.90 mm; elytra in posterior part with erect setae. Head shorter than pronotum; eyes small, oval, invisible in dorsal view, situated at base of rostrum; rostrum carinate, densely punctate; scrobes visible dorsally; antennae ( Fig. 4a ) stout, 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, constricted before apex, postocular lobe absent, scutellum not visible. Elytra elongate, EL/EW ratio> 1.30, interstriae flat, striae with large, shallow punctures, apex of elytron rounded. Procoxae separated, mesocoxae widely separated. Ventrite I and II separated by straight suture, ventrite I clearly longer than II ( Fig. 4b ). Tarsomere III strongly bilobed, onychium long, at least as long as tarsomeres II and III combined. Median lobe of aedeagus symmetrical, with internal sclerites, parameres absent.

Distribution. Three species of Anchonidium are known; two are present in the Caucasus Region and another one is widespread in Europe.

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. 4. Anchonidium caucasicum Motschulsky, 1845: a – antenna; b – abdominal ventrites I–V; c – spermatheca; d – sternite VIII. Anchonidium perpensum Faust, 1886: e – spermatheca; f – sternite VIII. Aparopion costatum (Fåhraeus, 1843): g – antenna. Scale bars: 0.2 mm.

Fig. 2. Adexius scrobipennis Gyllenhal, 1834: a – antenna; b – abdominal ventrites I–V; c – sternite VIII; d – spermatheca; e – sternite IX and hemisternites. Scale bars: 0.2 mm.