Paussus lanxangensis Nagel, 2009

Nagel, Peter, 2024, The Paussus (Scaphipaussus) lanxangensis species group of Indomalayan ant nest beetles (Coleoptera, Carabidae, Paussinae, Paussini) with description of a new species, Zootaxa 5501 (3), pp. 447-457 : 452

Paussus lanxangensis Nagel, 2009 [DP 28 Dec 2009]

Type locality: NE Laos, Xieng Khouang prov., Pek district, 19°38.2’N 103°20.2’E, Ban Na Lam to Phou Sane Mt. , 20.–30.v.2009, 1420 m. Secondary tropical montane forest, flight interception trap, D. Hauck leg., Laos 2009 expedition NHMB Basel [M. Brancucci], NMPC Prague ( Geiser & Nagel 2013) .

BL: 4.3 mm (male)–5.0 mm (female)

Material examined (details below): Holotype male ( Laos, NMB), one female Laos, Louang Phrabang prov. (Coll. Nagel in BGUB)

Localities (includes additional records):

LAOS, male, Xiengkhouang prov. , type locality, see above .

LAOS, female, Khammouane prov., Nakai env., 17°43’N 105°09’E, 22.v.–8.vi.2021, 500–600 m a.s.l., E. Jendek & O. Šauša leg. ( Maruyama & Nakase 2023) .

LAOS, female, N-Laos, Louang Phrabang prov. , Ban Song Cha (5 km W), 20° 33,4‘N 102°14’E, 1200 m, leg. C.Holzschuh, P.lanxangensis , det Nagel 2011, ex Coll. C.Holzschuh, Coll.Nagel in BGUB ,

THAILAND, male, Chiang Mai, Mae Rim, Ban Pong Yaeng Nai, 2.–5.v.2013, M. & K. Kawahara leg., dto., female, 8.v.2013, K.Takahashi leg. ( Maruyama & Nakase 2023).

THAILAND, male, Chiang Mai, Samoeng, Ban Ang Khai , 12.–20.v. 2003, M.Maruyama leg. ( Maruyama & Nakase 2023) .

The original description is here amended with data identified as relevant during the phylogenetic analysis ( Robertson & Moore 2016), yet see chapter “Materials and Methods” for limitations.Antennomere 1 (scape) subapically without trichome brush. The lateral lobes of the mentum broadest at base, the outer margin almost straight, the mesal margin convex. The maxillary palpomere II is large and explanate, with its mesal margin faintly emarginate, almost straight. The penultimate maxillary palpomere is not distinctly broader than palpomere IV. Labial palpomere 2 with socket for palpomere 3 is not shifted to the outer margin of palpomere 2. Terminal labial palpomere slightly flattened, of oval shape with acute tip as originally described ( Nagel 2009). Ligula ventrally with short longitudinal, blunt carina. Pygidium with marginal trichome fringe absent, originally described and here confirmed. Pygidium marginally broadly explanate, not bent inwardly as in P. agatae sp. nov..