Edaphus inexspectatus, Puthz, 2014

Puthz, V., 2014, Review of the New World Edaphus MOTSCHULSKY (Coleoptera, Staphylinidae) 120 th Contribution to the Knowledge of Euaesthetinae, Linzer biologische Beiträge 46 (1), pp. 799-827 : 814

Edaphus inexspectatus nov.sp. (figs 16-18, 26, 39)

Type material: Holotype (): U.S.A.: Arkansas, Scott Co., 14 mi SE Waldron, 1000 feet, forest litter, 31.V.1984, J. Pakaluk #238: in the AMNH.

D e s c r i p t i o n: Macropterous, yellowish brown, shiny, aside of minute setiferous punctures impunctate; pubescence sparse, recumbent.

L e n g t h: 1.0- 1.1mm (forebody: 0.63mm).

PM of the ht: HW: 24.5; DE: 18; LE: 8; LT: 1,5; LG:3; PW: 28.5; PL: 26; dlbc: 20.5; EW: 39; EL: 38; SL: 31.

M a l e: Sternite 8 (fig. 26). Sternite 9 acute apicomedially, no fields of ha present. SpP sack-like, weakly sclerotized, vs about half as as long as the median lobe, slender. Aedeagus (figs 16-18, 39), apical portion of median lobe acutely angled, internal structures strongly sclerotized, parameres much shorter than median lobe, with 2 very long apical setae.

Head distinctly narrower than pronotum, eyes moderately large, finely facetted, temples distinct, ptfF distinct, semicircular, alfF short, ampF nearly as broad as each of the distinctly elevated alpF, flat, a distinct impression posteriorly at alpF about as large as antennal segment 2, no distinct separation between ampF and clp. Antennae short, when reflexed not extending to the posterior margin of the pronotum, club 2-segmented, segment 10 longer than broad, segment 11 about one third longer than segment 10. Pronotum broader than long, sides convex anteriorly, moderately concavely constricted behind; lbc, mbc (extending to base proper) and 4-6 small bf present. Elytra subquadrate, slightly broader than long, sides very slightly convex, dilated posteriad, shoulders simple. Mbct3 nearly half as long as the tergite.

C o m p a r a t i v e n o t e s: This new species belongs to the dissimilis -group. From the nearctic Edaphus species it may be distinguished as follows: from E. lederi Eppelsheim by the not elongated mbf, from E. politus Motschulsky by the much shorter mbct3, narrower shape and nearly impunctate tergites, from E. nitidus Motschulsky and E. americanus PUTHZ by longer, impunctate elytra, from all by the aedeagus.

E t y m o l o g y: Since I did not exspect one further Edaphus from North America I name it " inexspectatus " (Lat.= not exspected).