Dyscolus arauzae 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 : 38-40

Dyscolus arauzae Moret sp. nov.

urn:lsid:zoobank.org:act:B992F8BA-69F8-4591-A010-440432759483

Figs 36, 39

Etymology

Noun in the genitive case, dedicated to María de los Ángeles Aráuz who took part in the discovery of this species.

Type material

Holotype

ECUADOR • ♂; Pichincha Province, Volcán Cayambe SW, Waypoint 73 ; 0.006962º N, 78.020278º W; 4405 m a.s.l.; 30 Oct. 2015; P. Moret and M. Aráuz leg.; QCAZ.

Paratypes (6 ♂♂, 6 ♀♀)

ECUADOR – Pichincha Province • 1 ♂; same collection data as for holotype; MNHN • 1 ♂, 1 ♀; same collection data as for holotype; CPM • 1 ♀; same collection data as for holotype; COI voucher PM073-03, BOLD sequence SUM020-18; CPM • 1 ♂; Volcán Cayambe SW, Waypoint 77 ; 0.007724º N, 78.023350º W; 4300 m a.s.l.; 30 Oct. 2015; P. Moret and M. Aráuz leg.; COI voucher PM077-01, BOLD sequence SUM099-18; CPM • 3 ♂♂, 2 ♀♀; Volcán Cayambe SW, Waypoint 267 ; 0°00.415′ N, 78°1.338′ W; 4294 m a.s.l.; 4 Mar. 2017; P. Moret and M. Gobbi leg.; CPM • 1 ♀ (in ethanol); Volcán Cayambe SW, Waypoint 76 ; 0.006860º N, 78.020714º W; 4390 m a.s.l.; 18 Jul. 2016; P. Moret and E. Moreno leg.; CPM • 1 ♀ (in ethanol); same collection data as for preceding; 4 Mar. 2017; P. Moret and M. Gobbi leg.; CPM .

Diagnostic description

Habitus: Fig. 36 . Wingless. Body length: 8.5–10.9 mm. Antennae unicoloured, testaceous, as in D. hirsutus (apical part of the antennomeres darker in D. piscator Moret sp. nov. and D. placitus Moret sp. nov.). Colour of the ventral face variable. Dimensions of the head intermediate between D. piscator Moret sp. nov. and D. placitus Moret sp. nov. (length of the right mandible / width of the frons between the anterior setae = 1.05). Apex of the labrum straight. Lateroposterior seta of the pronotum close to the hind angle (slightly shifted forward in D. piscator Moret sp. nov. and D. placitus Moret sp. nov.). Third elytral interval with 4–7 setae, fifth interval with 2–4 setae, seventh interval normally without setae, only one paratype with one seta; 15–17 umbilicate setae along the lateral margin (11–13 in D. piscator Moret sp. nov., 17–20 in D. placitus Moret sp. nov.). Male genitalia: Fig. 39 . Apex of the median lobe bent downwards, resembling that of D. placitus Moret sp. nov.; apical part of the endophallus covered with sclerotized squamae (unarmed in D. piscator Moret sp. nov. and D. placitus Moret sp. nov.).

Habitat

Riparian along glacier-fed streams in the humid superpáramo at 4300–4400 m a.s.l.

Geographic distribution

Microendemic species, presumably restricted to the Cayambe mountain.

Figures

Figs 36–41. Dyscolus spp., habitus (36–38) and aedeagus, median lobe in lateral view (39–40) and apex of the median lobe (41). 36. Dyscolus arauzae Moret sp. nov., male holotype (QCAZ). 37. D. piscator Moret sp. nov., male holotype (QACZ). 38. D. placitus Moret sp. nov., male holotype (MNHN). 39. D. arauzae Moret sp. nov. 40. D. piscator Moret sp. nov. 41. D. placitus Moret sp. nov. (above) and D. piscator Moret sp. nov. (below).