Dyscolus sulcipedis Moret, 2020

Moret, Pierre & Murienne, Jérôme, 2020, Integrative taxonomy of the genus Dyscolus (Coleoptera, Carabidae, Platynini) in Ecuadorian Andes, European Journal of Taxonomy 646, pp. 1-55 : 26-27

Dyscolus sulcipedis Moret sp. nov.

urn:lsid:zoobank.org:act:611661EF-D8A2-4E28-8622-349EC9F6C992

Figs 20, 23

Etymology

Compound Latin adjective meaning ‘with sulcate feet’ (i.e., tarsi).

Type material

Holotype

ECUADOR • ♂; Loja Province, Parque Nacional Yacuri, Waypoint 167; 4.711861º S, 79.440355º W; 3240 m a.s.l.; 4 Aug. 2016; P. Moret, S. Aguirre and E. Moreno leg.; QCAZ.

Paratypes (2 ♂♂, 2 ♀♀)

ECUADOR • 1 ♂; same collection data as for holotype; MNHN • 2 ♀♀; same collection data as for holotype; CPM • 1 ♂; same collection data as for holotype; COI voucher PM167-09, BOLD sequence SUM061-18; CPM .

Diagnostic description

Habitus: Fig.20 .Wingless.Body length: 10.6–11.5mm.Body colour variable,from brunneous to brownish black; femora and tibiae brownish; tarsi, antennae and mouthparts reddish brown. Elytral microsculpture transverse, weakly impressed. Head moderately broad, constricted basally, eyes moderately bulging, genae flat. Pronotum subcordiform, transverse, sides arcuate anterad, markedly sinuate posterad; hind angles slightly obtuse or almost right angled; two pairs of lateral setae. Elytra elongate-ovoid, slightly convex; striae entire, well impressed; intervals variable, flat to slightly convex in basal half, convex at apex. Third elytral interval with three setae. Last visible abdominal ventrite with two pairs (♂) or four pairs (♀) of setae along its apical margin. Legs: tarsi smooth dorsally, metatarsomeres 1–3 bisulcate, fourth metatarsomere with one pair of dorsolateral subapical setae, apical lobes moderately long, the external lobe 1.5 times longer than the inner lobe; fifth metatarsomere convex dorsally, asetose ventrally. Male genitalia: Fig. 23 . Median lobe weakly arcuate, apex short, acute, endophallus without sclerotized structure. Female genitalia: unstudied.

Comparisons

Dyscolus sulcipedis Moret sp. nov. belongs to the marini clade along with D. marini Moret sp. nov., D. ruizi Moret sp. nov., D. arborarius Moret sp. nov., D. moretianus and D. rugitarsis Moret sp. nov. Based on external morphology (not on molecular data), its closest relative is D. rugitarsis Moret sp. nov., from which it differs mainly in the following characters: elytral microsculpture transverse, weakly impressed (coarser and mostly isodiametric in D. rugitarsis Moret sp. nov.); head slightly narrower; latero-posterior sinuation of the pronotum deeper; last visible abdominal ventrite with two pairs (♂) or four pairs (♀) of apical setae (one and two pairs in D. rugitarsis Moret sp. nov.); tarsi not rugose; fifth metatarsomere plesiomorphic, not broadened and dorsally depressed.

Habitat

Upper montane forest, at around 3240 m a.s.l. Active at the beginning of the night on the surface of the leaf litter and on tree trunks 2 m above ground.

Geographic distribution

Only known from the type locality in Southern Ecuador, in Parque Nacional Yacuri. Probably microendemic.

Figures

Figs 19–24. Dyscolus spp., habitus (19–21) and aedeagus, median lobe in lateral view (22–24). 19. D. rugitarsis Moret sp. nov., male holotype (QACZ). 20. D. sulcipedis Moret sp. nov., male holotype (QACZ). 21. D. marini Moret sp. nov., female paratype. 22. D. rugitarsis Moret sp. nov. 23. D. sulcipedis Moret sp. nov. 24. D. marini Moret sp. nov.