Zeadalmodes Nomura and Leschen, 2015

Zeadalmodes Nomura and Leschen View in CoL , new genus ( Figs. 12–17 View Fig View Fig View Fig View Fig )

Type species: Zeadalmodes myrmecophilus Nomura and Leschen , new species

Diagnosis. Body large ( 2.72–3.18 mm), robust and elongate. Head narrower than prothorax and nearly circular in dorsal view, frons weakly concave, vertex slightly convex, with pair of welldemarcated, setose, round dorsal tentorial pits;

138 THE COLEOPTERISTS BULLETIN 69(1), 2015

posterior constriction not notched and lacking lateral fovea; postgenae large and rounded, venter bearded ( Fig. 13B View Fig ). Antennae short and thick, weakly thickened towards apex, with insertions hidden in dorsal view; antennal tubercles weakly defined. Maxillary palpi short and thick, palpomere IV largest, nearly fusiform.

Pronotum about as long as head, gently convex and nearly circular, with pair of well-developed basilateral foveae, 3 longitudinal sulci (pair of lateral longitudinal sulci and median longitudinal sulcus), and well-demarcated bisinuate antebasal sulcus ( Fig. 13A View Fig ). Elytra slightly wider than long, weakly convex, rounded on humeri; each elytron with 2 basal foveae, humeral denticle, short longitudinal sulcus extending from outer basal fovea, and adsutural sulcus extending from inner basal fovea ( Fig. 13F View Fig ). Prosternum without lateral or median longitudinal carinae. Ventral foveae simple, those present as follows: gula (head); lateral procoxal (prosternum); small prepectal, lateral mesoventral, fused median mesoventral and lateral mesocoxal (mesoventrite); lateral metaventral (metaventrite); weak mediobasal and basolateral (abdominal sternite III). Legs short and stout; 1 tarsal claw present.

Abdomen elongate and subparallel-sided, with tergites equal in length, sternite III very short, and large, V-shaped projection between metacoxae; IV longer than III, large, broadened posteriorly, with pair of narrow paratergites on lateral sides; V about as large as IV, broadened posteriorly at sides.

Remarks. Zeadalmodes is easily separated from other trichonychine genera by having a large and robust body, a nearly circular pronotum with a welldemarcated bisinuate transverse sulcus, and a subparallel-sided abdomen.

Etymology. The new generic name is formed from the prefix “ Zea- ” meaning “of New Zealand ” and combined with the generic name “ Dalmodes ”.