Dyscolus aquator 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 : 14-15

Dyscolus aquator Moret sp. nov.

urn:lsid:zoobank.org:act:0CB9ECC0-83A7-4D5D-BCC5-18118ABFAD0F

Figs 7–8

Etymology

Latin adjective meaning ‘related to water’.

Type material

Holotype

ECUADOR • ♂; Pichincha Province, Tandayapa, Bellavista Lodge, Waypoint 81; 0°0′56.6″ S, 78°40′49.1″ W; 2250 m a.s.l.; 2 Nov. 2015; P. Moret leg.; QCAZ.

Paratypes (3 ♂♂, 4 ♀♀)

ECUADOR – Pichincha Province • 1 ♂; same collection data as for holotype; CPM • 1 ♀; same collection data as for holotype; MNHN • 1 ♀; same collection data as for holotype; COI voucher PM081- 01, BOLD sequence SUM213 -18; CPM • 2 ♂♂, 1 ♀; Pichincha Province, Tandayapa, Bellavista, Cascada ; UTM 0758443, 9998631; 2100 m a.s.l.; 25 Feb. 2010; P. Moret leg.; under stone; CPM • 1 ♀; Tandayapa, Bellavista Lodge ; 0.0147º S, 78.6833º W; 2200 m a.s.l.; 9 Nov. 2010; D. Maddison leg.; COI voucher PM510, BOLD sequence SUM310-18; OSAC .

Diagnostic description

Habitus: Fig. 7 . Wingless. Body length: 10.2–11.9 mm. Body shiny black; basal ¾ of the femora and basal ½ of the tibiae dark brown; rest of the legs, antennae and mouthparts reddish brown. Elytral microsculpture transverse. Head average, eyes moderately bulging, mandibles long and acute. Pronotum elongate, cordiform, hind angles right angled, sharp; two pairs of lateral setae. Elytra narrow, humeri wholly effaced, striae deep, entire, with traces of punctation; third interval with three setae in most specimens (four setae on both elytra of one paratype and on the right elytron of another); subapical sinuation very deep; apex with a small acute tooth at sutural angle. Last visible abdominal ventrite with one pair (♂) or two pairs (♀) of setae along its apical margin. Legs slender; fourth metatarsomere without subapical dorsolateral setae, apical lobes parallel, the outer lobe 1.5 times longer than the inner lobe. Male genitalia: Fig. 8 . Middle section of the median lobe straight in lateral view, feebly arcuate distally, apex triangular in lateral view, very short; endophallus without sclerotized structure, except for a subapical denticle. Female genitalia: unstudied.

Comparisons

See below under D. incommunis Moret sp. nov.

Habitat

Riparian in the montane forest on the Western slope of the Andes , at around 2200–2250 m a.s.l. The 2100 m elevation indicated on the labels of the specimens collected in 2010 is wrong, the correct elevation is 2200 m.

Geographic distribution

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

Figures

Figs 7–12. 7–8. Dyscolus aquator Moret sp. nov. 7. Habitus of the male holotype (QCAZ). 8. Aedeagus, median lobe in lateral view. 9–10. D. incommunis Moret sp. nov. 9. Aedeagus, median lobe in lateral view. 10. Habitus of the male holotype (QCAZ). 11–12. D. rivinus Moret sp. nov. 11. Apex of the elytra. 12. Aedeagus, median lobe in lateral view.