Dyscolus silvestris Moret 2020, sp. nov.
Creators: name: Moret, Pierre
name: Murienne, Jérôme
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Carabidae
Dyscolus
Dyscolus silvestris

description: Dyscolus silvestris Moret sp. nov.
urn:lsid:zoobank.org:act: 8DA5B9B7-F332-4D75-AC2D-CEBBD34ADA3C
Figs 52–53
Etymology
Latin adjective meaning ‘forest related’.
Type material
Holotype
ECUADOR • ♂; Napo Province, Termas de Papallacta; 3300 m a.s.l.; 1 Jul. 2001; P. Moret leg.; “sousbois”; QCAZ.
Paratypes (5 ♂♂, 10 ♀♀)
ECUADOR – Napo Province • 1 ♂, 1 ♀; same collection data as for holotype; CPM • 1 ♂, 1 ♀; Papallacta, Termas Jamanco, Waypoint 41; 0°22′24.6″ S, 78°10′5.5″ W; 3410 m a.s.l.; 25 Oct. 2015; P. Moret leg.; MNHN • 1 ♀; same collection data as for preceding; QCAZ • 1 ♂, 3 ♀♀; same collection data as for preceding; CPM • 1 ♂; same collection data as for preceding; COI voucher PM041-02, BOLD sequence SUM103-18; CPM • 1 ♀; same collection data as for preceding; COI voucher in ethanol PM041-06, BOLD sequence SUM104-18; CPM • 2 ♀♀; Lago Papallacta; 3370 m a.s.l.; 9 Apr. 1986; A. Vigna; CPM • 1 ♀; Papallacta; 2700 m a.s.l.; 6–8 Apr. 1979; H. Frania leg.; UASM • 1 ♂; Lago Papallacta; 0°20′29″ S, 78°10′23″ W; 3400 m a.s.l.; 6 Nov. 1999; R. Anderson leg.; CMNC.
Diagnostic description
Habitus: Fig. 52. Wingless. Body length: 9.1–10.0 mm. Body colour variable, predominantly dark brown with reddish brown areas in some specimens; legs, antennae and mouthparts reddish brown. Elytral microsculpture isodiametric. Head broad and convex, neck slightly constricted, eyes moderately bulging. Pronotum subcordiform, the base much narrower than the apex; sides arcuate anterad, markedly sinuate posterad; hind angles obtuse, sharp; two pairs of lateral setae. Elytra subovate, moderately convex; striae entire, well impressed; intervals flat. Third elytral interval with 3–4 discal setae. Legs: protarsi of the male much broader than those of the female. Fifth metatarsomere asetose ventrally. Last visible abdominal ventrite with one pair (♂) or two pairs (♀) of setae along its apical margin. Male genitalia: Fig. 53. Median lobe arcuate, shortly and bluntly triangular at apex, endophallus unarmed. Female genitalia: unstudied.
Comparisons
Dyscolus silvestris Moret sp. nov. is similar to the shorter and broader individuals of Dyscolus denigratus. The main differences are: head slightly bigger and broader; sides of the pronotum sinuate basally, hind angles sharply obtuse (completely rounded in D. denigratus); femora of the male not swollen as in D. denigratus. The apex of the median lobe of the male genitalia has a shorter apex, and the endophallus is entirely unarmed (with a heavily sclerotized area in D. denigratus).
Habitat
Upper montane forest on the Amazonian slope of the Andes, from 2700 to 3400 m a.s.l. This species lives in the leaf litter.
Geographic distribution
Only known from the type locality around Papallacta in Northern Ecuador, probably microendemic.
description: Published as part of Moret, Pierre & Murienne, Jérôme, 2020, Integrative taxonomy of the genus Dyscolus (Coleoptera, Carabidae, Platynini) in Ecuadorian Andes, pp. 1-55 in European Journal of Taxonomy 646 on pages 45-47, DOI: 10.5852/ejt.2020.646, http://zenodo.org/record/3829682