Integrative taxonomy of the genus Dyscolus (Coleoptera, Carabidae, Platynini) in Ecuadorian Andes
Author
Moret, Pierre
2E194645-D255-438B-819E-A2B6C39AD699
Laboratoire TRACES (UMR 5608), CNRS, Université Toulouse 2 Jean Jaurès, Toulouse 31058, France.
pierre.moret@univ-tlse2.fr&pierre.moret@univ-tlse2.fr
Author
Murienne, Jérôme
3A6964D4-A7D6-46DB-8129-B762D14BC8F9
Laboratoire Evolution et Diversité Biologique (UMR 5174), CNRS, Université Toulouse 3 Paul Sabatier, IRD, Toulouse 31062, France.
jerome.murienne@univ-tlse3.fr
text
European Journal of Taxonomy
2020
2020-05-15
646
1
55
journal article
22092
10.5852/ejt.2020.646
c5cf0da1-13e3-4bf4-844c-9b5a9d4f6d5b
3829682
4C9F63B2-DB17-4EDB-ADEE-13AC9EFB921B
Dyscolus verecundior
Moret
sp. nov.
urn:lsid:zoobank.org:act:
DAB1A22E-25D1-438C-AE2E-25542AF7E50F
Figs 54
,
58
Dyscolus verecundus
Moret, 1998: 20
,
pro parte.
Dyscolus
(
Dyscolus
)
verecundus
–
Moret 2005: 142
,
pro parte.
Etymology
Comparative form of the Latin adjective ‘
verecundus
’, which is the name of a closely related species.
Type material
Holotype
ECUADOR
•
♂
;
Pichincha Province
,
Volcán Illiniza
, ENE slope,
Waypoint 136
;
0.644404º S
,
78.703469º W
;
4335 m
a.s.l.
;
15 Jul. 2016
;
P. Moret
and
A. Barragán
leg.; COI voucher in ethanol PM136-04, BOLD sequence SUM062-18;
MNHN
.
Paratypes
(2 ♂♂)
ECUADOR
–
Pichincha Province
•
1 ♂
(red printed label: “
Dyscolus verecundus
Moret, 1998
, Paratype”);
Volcán Illiniza
, NE slope;
4080 m
a.s.l.;
7 Aug. 1985
;
P. Moret
leg.;
Polylepis
forest
;
CPM
•
1 ♂
(red printed label: “
Dyscolus verecundus
Moret, 1998
, Paratype”); E slope of Volcán Corazón;
4450 m
a.s.l.;
24 Jan. 1986
;
P. Moret
leg.;
CPM
.
Diagnostic description
Habitus:
Fig. 54
. Wingless. Body length: 10.8–11.0 mm. Body colour variable, from reddish brown to piceous black, the vertex and the sutural zone of the elytra reddish; legs, antennae and mouthparts reddish. Elytral microsculpture isodiametric, distinctly impressed. Head robust, convex, neck strongly constricted, eyes moderately bulging, genae almost flat in dorsal view; antennae short. Pronotum transverse, subquadrate; sides moderately arcuate distally, weakly sinuate in basal third; hind angles variable, obtuse or almost quadrate, but always blunt; two pairs of lateral setae. Elytra subparallel, disc almost depressed; humeri rounded but not effaced, subapical sinuation obsolete; striae thin, shallowly impressed; intervals flat; third elytral interval with 3–5 discal setae. Fourth metatarsomere triangular, with one pair of lateroapical setae and without subapical dorsolateral setae; apical lobes very short, the inner one not extending beyond the insertion point of the lateroapical seta; fifth metatarsomere asetose ventrally. Last visible abdominal ventrite of the male with one pair of setae along its apical margin (♂).
Male genitalia
:
Fig. 58
. Median lobe weakly arcuate; apical blade bluntly triangular in dorsal view; endophallus with two sclerotized squamose areas, ovoid in shape, median and subapical.
Female genitalia
: unknown.
Comparisons
This species closely resembles
D. verecundus
, now restricted to Mt
Pichincha
, its
type
locality.
Dyscolus verecundior
Moret
sp. nov.
differs from
D. verecundus
in a few external and genital characters: genae almost flat (convex in
D. verecundus
); antennae slightly thicker, the second antennomere of the male 1.41 to 1.49 times as long as wide (1.50 to 1.65 times in
D. verecundus
); fourth metatarsomere thinner, 1.16 to 1.20 times as long as wide (1.07 to 1.13 times in
D. verecundus
); apical blade of the median lobe thinner in lateral view (compare
Figs 56–57 and 58
); sclerotized areas of the endophallus bigger.
Habitat
Lower superpáramo from
4080 to 4450 m
a.s.l.
Geographic distribution
Microendemic species, restricted to the Illiniza and Corazón volcanoes in the Western Cordillera.