Pseudorygmodus versicolor FIKÁýEK & VONDRÁýEK 2014, sp. nov.
Creators: name: FIKÁýEK, Martin
name: VONDRÁýEK, Dominik
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Hydrophilidae
Pseudorygmodus
Pseudorygmodus versicolor

description: Pseudorygmodus versicolor sp. nov.   
(Figs 5–7, 12–30, 33, 35, 41–42, 45, 48, 51–52, 55–56, 58, 60–61, 74)  
 Type locality. Chile, La Araucanía Region, Parque Nacional Nahuelbuta, 2.2 km north of Pehuenco, Estero Agua de Los Gringos stream at the place where it is crossed by Sendero Estero Los Gringos track, 37°48.5މS 73°0.7މW, 1160 m a.s.l.   
 Type material. HOLOTYPE: J(MNNC), ‘ CHILE: IX.La Araucanía Region / PN Nahuelbuta, 2.2 km N of / Pehuenco, Estero Agua de Los / Gringos, 37°48.5މS 73°0.7މW / 1160m, 11–12.xii.2013 / FikáÞek, Kment & VondráÞek / CH 37 // floated from mosses at water / level or in the splash zone at / stones at sides and in the middle / of a mountain stream’. PARATYPES: 29 spec. (NMPC, BMNH, FMNH, JBCC, MNNC, SEMC, USNM, ZMUC): same label data as the holotype.   
  Description. Body.  Body elongate oval, moderately convex. Body length 3.2–4.1 mm (3.4 mm in the holotype), body width 1.9–2.3 mm (2.0 mm in the holotype). Coloration. Dorsal surface very dark brown to black, elytra with weak bluish metallic sheen; lateral parts of pronotum widely yellow and rather sharply de¿ned from dark pronotal disc; lateral margin of elytra with a narrow yellow stripe which is rather sharply de¿ned anteriorly but rather vaguely posteriorly, epipleuron yellow. Ventral portion of head black, mouthparts brown; prosternum brown, prothoracic hypomeron yellowish; ventral portions of meso- and metathorax dark brown, abdominal ventrites brown to dark brown. Head appendages yellowish proximally, brown to dark brown distally; femora reddish, tibiae and tarsi slightly darker, brown. Head. Frons and clypeus with ¿ne but sharply impressed rather sparse punctation, interstices without miscrosculpture. Eyes weakly protruding, separated by ca. 5.3× the width of one eye. Labrum with punctation similar to that on clypeus, bearing a transverse series of few trichobothria with sockets larger than surrounding punctation. Maxillary palpi not widened, of same morphology in male and female. Posterior tentorial pits fused together.   
 Thorax. Pronotum with punctation similar to that on head, interstices without microsculpture. Elytral series rather indistinct anteromesally, more distinct posteriorly and laterally; interval punctation ¿ne, rather sparse but sharply impressed, punctures only slightly smaller than serial ones; interstices without microsculpture. Prosternum with nearly complete transverse ridge. Mesoventrite nearly flat, only with slightly elevated posteromedian portion, bearing a longitudinal impression anteromedially, anteriorly dividing the posterior portion of the mesothoracic collar. Metaventrite with dense hydrofuge pubescence except posteromesally and anterior of metacoxae; postcoxal ridge of metaventrite straight, not crenulate.   
 Abdomen. Abdominal ventrites completely covered by dense pubescence. Legs. Metafemur and metatibia of the same morphology in male and female; femur slender, subcylindrical, without tibial groove, tibia subcylindrical; claws not sexually dimorphic, arcuate in both sexes.  Male genitalia.  Aedeagus with parameres widened apically (chopper-like); median lobe widely triangular, gonopore narrowly transverse.   
 Etymology. The species name versicolor (Latin, colorful) reflects the dorsal coloration of this species, combining yellow, black and metallic bluish, in which it differs from P. flintispangleri.   
 Biology. All specimens were floated from the wet moss collected on stones in and along the mountain stream, in the splash zone just above the water-line (Figs 8–10). They co-occurred in this habitat with Anticura flinti Spangler, 1979 and Enochrus (Hugoscottia) variegatus (Steinheil, 1869) (small male specimen corresponding with those from Argentina: Junín de Los Andes identi¿ed by L. Fernández, all specimens deposited in NMPC).   
 Distribution. Only known from the type locality in Parque Nacional Nahuelbuta.
description: Published as part of FIKÁýEK, Martin & VONDRÁýEK, Dominik, 2014, A review of Pseudorygmodus (Coleoptera: Hydrophilidae), with notes on the classification of the Anacaenini and on distribution of genera endemic to southern South America, pp. 479-514 in Acta Entomologica Musei Nationalis Pragae 54 (2) on pages 498-499, DOI: 10.5281/zenodo.5299198