Anomalodermus, Perroud

Kuschel, Guillermo, 2008, Curculionoidea (weevils) of New Caledonia and Vanuatu: Basal families and some Curculionidae, Mémoires du Muséum national d'Histoire naturelle 197, pp. 99-250 : 147-148

Genus ANOMALODERMUS Perroud

Anomalodermus Perroud, 1865: 147 (type species A. flexuosocostatus Perroud ). — Heller 1916: 312. DESCRIPTION. — Adelognathous; eyes distinctly transverse, flat, coarse; rostrum on midline raised to a blunt ridge; scrobes directed towards upper part of eyes; scape reaching or slightly passing hind margin of eyes, directed towards upper part of eyes, in lateral view bent upwards; club segment 1 much shorter than remainder of club; ocular lobes moderately developed, with short or longish cilia; pronotum convex, disc neither flattened nor depressed; scutellum very small or concealed; elytra lacking humeral callus; odd interstriae subcostiform or tuberculate; hind tibiae with narrow glabrous or sparsely pilose corbel plate, with small mucro; claws free, divergent; metepisternum concealed except for anterior tip. Flightless.

Male: tegmen with parameral lobes. Aedeagus extending into metathoracic cavity; apodemes not or slightly longer than aedeagal body; internal sac not extended cepahalad from base of aedeagal body or reaching to half the length of apodemes, with proximally articulated basal sclerite, this robust and cylindrical, or flagelliform.

Female: ovipositor of the Catoptes-Leptopius group of genera with relatively broad hemisternites, long styli, short vagina and bursa.

DISTRIBUTION. — New Caledonia, endemic.

ETYMOLOGY. — A latinised compound derived from the Greek ‘anomalós’ meaning aberrant, unusual, and ‘derma’ for skin or body wrapping.

REMARKS. — Anomalodermus is in appearance much like the Australian Amisallus Schoenherr , the latter having open corbels on hind tibiae, scrobes and scape directed towards the lower part of eyes, and, in lateral view, a downwards curved scape. Three spectacularly different species are present, which ought to suggest that a number of other species remain to be discovered. Heller (1916) provided a key to the species but none of the four keyed out by him belong in Anomalodermus

KEY TO SPECIES OF ANOMALODERMUS

1. Rostrum, pronotum and elytra with long erect setae besides a pile of short clavate pilosity. Scrobes, in front of eyes, with sharp, cariniform lower edge. Elytra with low tubercles only. 3.8-3.9 mm. New Caledonia..................................................................................................................................... incrustatus — Rostrum, pronotum and elytra with short, recumbent or raised clavate setae only. Scrobes, in front of eyes, with blunt, not cariniform edge. Elytra with large tubercles ....................................................... 2

2. Interstria 3 at base raised to a low ridge, ridge not advancing forward onto pronotum. Elytra beyond middle with one tubercle on interstria 3. 5.8-8.0 mm. New Caledonia........... flexuosocostatus — Interstria 3 at base raised to a large bulky tubercle, this advancing forwatd onto pronotum. Elytra beyond middle with two tubercles each, one on interstria 3, the other on 5. 6.0-7.0 mm. New Caledonia.................................................................................................................................................... proclivis