Linoderus smetanai Chani-Posse 2021, sp. n.
Creators: name: Chani-Posse, Mariana Raquel
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Staphylinidae
Linoderus
Linoderus smetanai

description: Linoderus smetanai sp. n.
urn:lsid:zoobank.org:act: C1126DAF-F279-4322-8592-713D62C21A61
(Figs. 1–12)
Diagnosis. Linoderus smetanai differs from L. alajuelensis and L. gracilipes in the distinct colour pattern: head and prothorax dark metallic blue, elytra metallic green, abdomen with first five visible abdominal segments reddish brown and apical abdominal segments dark brown to black; antennae and palpi mostly reddish brown to brown, with legs and styli dark brown to black as well as the first antennomere moderately longer than half of head length*, labial palpus with second palpomere about as long as third*, the first metatarsomere not sexually dimorphic in length*; the abdominal tergites 3–5 with posterior basal transverse carina (PBTC) complete and straight, space behind PBTC not distinctly punctate* and the sternite 9 with several apical setae at each side of emargination are also unique to this species.
* Not shown as characters with interspecific variation in the redescription of the genus by Chani-Posse & Solodovnikov (2017)
Description. Body length 7.7–8.5 mm. Colouration: as in diagnosis (Figs. 1, 2). Head slightly longer than wide (HW/HL = 0.93–0.94), moderately wider than pronotum (HW/PW = 1.16–1.18). Eyes distinctly shorter than temples (EL/TL = 0.65; both sexes) seen from above (Figs. 1, 2). Antennae with 1st antennomere moderately longer than half of head length (A1/HL = 0.66; both sexes), moderately shorter than 2nd and 3rd combined, 3rd about 1.5 × as long as 2nd. Labial palpus with 2nd palpomere about twice as long as 1st, about as long as 3rd. Maxillary palpus with 4th palpomere (apical) 1.8 × as long as 3rd. Neck about 0.4 × as wide as head at widest point. Pronotum distinctly longer than wide (PW/PL = 0.71–0.72), dorsal rows of punctures each with four punctures, 2nd and 3rd more distant to each other than 2nd to 1st and 3rd to 4th. Elytra at sides about 1.5 × as long as elytra along suture (EtL/Etl= 1.57; both sexes). First metatarsomere not sexually dimorphic in length, distinctly longer than 5th in both sexes (S1/S5 = 1.55–1.66). Abdominal tergites 3–5 with posterior basal transverse carina complete and straight, space behind not distinctly punctate. Male sexual characters: Sternite 8 with medially produced and subangulately emarginate projection (Fig. 3). Sternite 9 with basal portion distinctly asymmetrical, 1.8 × as long as distal portion and deeply emarginate apically, with several apical setae at each side of emargination (Fig. 4). Genital segment with lateral tergal sclerites 9 (styli) dorsoventrally flattened and moderately dilated, with a distinct latero-apical emargination (Fig. 8); tergite 10 subtruncate apically. Aedeagus with median lobe gradually narrowed from about distal half of paramere length and with acute apex; apex of paramere distinctly notched at middle (Figs. 6, 7). Female sexual characters: Sternite 8 with hind margin projected medially (Fig. 10). Genital segment with lateral tergal sclerites 9 (styli) dorsoventrally flattened and not distinctly dilated, with a moderate latero-apical emargination (Fig. 12); tergum 10 subangulate to arcuate apically (Fig. 9); second gonocoxites each with a long macroseta, with minute stylus (Fig. 11) bearing one long apical macroseta.
Geographical distribution. Linoderus smetanai has been recorded from four different localities in Western Costa Rica within the 1480–1640 m range of elevation.
Etymology. The specific name is dedicated to Dr. Aleš Smetana in recognition of his pioneering work and great legacy in the modern study of the subfamily Staphylininae.
Remarks. The new species fully fits into the generic diagnosis provided by Chani-Posse & Solodovnikov (2017).
Type material. Holotype ♂ (Fig. 1), with labels: [white label]´CR. Pnt. 1500m / Reserva de / Monteverde / 1-4.VI. 1979 / JM&BA Campbell´, [red label]´Holotype Linoderus smetanai Chani-Posse 2021´(CNC). Six ♀ paratypes with labels: [white label]´CR. Pnt. 5000’ / Reserva de / Monteverde / 27-29.VI. 1979 / JM&BA Campbell´, 1 (CNC) (Fig. 2); [white label]´Costa Rica: Cartago P.N. Tapanti / 17-20 JUL 2000 J. Ashe, R. Brooks, Z. Falin / 1480m 9° 43´12´´N, 83°46´36´´W / ex. Flight intercept trap CR1ABFOO 194´, 2 (SEMC); [white label]´Costa Rica: Guanacaste Prov. 8 km N Sta Elena / Santa Elena Forest Res. 11-17-VI-2001 / S. & J. Peck 1640m 10° 20.701´N, 84° 47.899´W / ex. FIT CR1P01 004´, 1 (SEMC); [white label]´Vara Blanca VIII.38 / Field Mus. Nat. Hist. 1966 A. Bierig Collection, Acc. Z. 13812´, 1 (FMNH); all of them with [red label]´Paratype Linoderus smetanai Chani-Posse 2021´.
description: Published as part of Chani-Posse, Mariana Raquel, 2021, A new species of the southern Central American genus Linoderus Sharp (Coleoptera: Staphylinidae: Staphylininae) with a revised key and an updated phylogeny, pp. 439-446 in Zootaxa 5060 (3) on pages 440-441, DOI: 10.11646/zootaxa.5060.3.9, http://zenodo.org/record/5635984