Dyscolus giselae Moret 2020, sp. nov.

Dyscolus giselae Moret sp. nov.

urn:lsid:zoobank.org:act: 235B5F1A-B526-4F29-BB49-0C16A08A5218

Figs 5–6

Etymology

Noun in the genitive case, dedicated to Gisèle Moret-Deysson.

Type material

Holotype

ECUADOR • ♂; Cotopaxi Province, Otonga, berge de ruisseau; 1950 m a.s.l.; 3–5 Jul. 2001; P. Moret leg.; QCAZ.

Paratypes (9 ♂♂, 13 ♀♀)

ECUADOR – Cotopaxi Province • 2 ♂♂, 6 ♀♀; same collection data as for holotype; CPM • 3 ♂♂; Otonga, río Las Damas; 1800 m a.s.l.; 3–5 Jul. 2001; P. Moret leg.; CPM • 2 ♂♂, 1 ♀; Otonga, río Esmeraldas; 1800 m a.s.l.; 3–5 Jul. 2001; P. Moret leg.; CPM • 1 ♀; Otonga; 2000 m a.s.l.; 1 May 1997; J. Gil leg.; “ debajo de piedras en río ”; QCAZ • 1 ♂; Las Pampas, Otonga; 1 Jan. 1997; G. Onore leg.; QCAZ • 1 ♀; Otonga; 1900 m a.s.l.; 7 Aug. 1998; I. Tapia leg.; QCAZ • 1 ♂; Otonga, río Esmeraldas; 0°25.455′ S, 79°00.360′ W; 1883 m a.s.l.; 13 Aug. 2016; V. Crespo leg.; COI voucher PM513, BOLD sequence SUM313-18; CPM • 3 ♀♀; Cantón Sigchos, Las Pampas, Bosque Integral Otonga; 11–12 Jul. 2007; W. Rossi leg.; CPMG • 1 ♀; San Francisco de las Pampas, Otonga; 30 Jul. 2004; G. Caoduro and G. Avesani leg.; CPMG.

Diagnostic description

Habitus: Fig. 5. Wingless. Body length: 10.2–12.2 mm. Shiny, piceous black with a faint metallic lustre on the elytra, varying from dark green to copper or pink; legs dark brown, antennae and mouthparts reddish brown to brownish. Elytral microsculpture transverse, shallowly impressed. Head broad, convex, eyes bulging, mandibles long and acute. Pronotum convex, rounded, much narrower at base than at apex, not sinuate, hind angles very obtuse, almost rounded; two pairs of lateral setae. Elytra elongate, convex, base narrow, humeri effaced; striae shallowly impressed, finely punctate, intervals flat to subconvex; third interval with three setae, except one male paratype that bears five setae on each side; subapical sinuation deep; apical extension triangular, recurved dorsally, more or less acute at apex. Last visible abdominal ventrite with one pair (♂) or two pairs (♀) of setae along its apical margin. Legs moderately slender; fourth metatarsomere without subapical dorsolateral setae, apical lobes parallel, the outer lobe 1.9 times longer than the inner lobe. Male genitalia: Fig. 6. Median lobe swollen in its middle part, abruptly bent ventrally in distal fourth; apical blade long and sinuate in lateral view; endophallus without sclerotized structure. Female genitalia: unstudied.

Comparisons

Metallic coloration and apically subspinose elytra separate D. giselae Moret sp. nov. from all the species (previously placed in the subgenus Hydrodyscolus) which share the derived character of a dorsally asetose fourth metatarsomere.

Habitat

Riparian in the montane forest on the Western slope of the Andes, at around 1800–2000 m a.s.l.

Geographic distribution

Southern end of the Chocó biogeographic region in northwestern Ecuador. Only known from the type locality, probably microendemic.