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 silvestris
Moret
sp. nov.
urn:lsid:zoobank.org:act:
8DA5B9B7-F332-4D75-AC2D-CEBBD34ADA3C
Figs 52–53
Etymology
Latin adjective meaning ‘forest related’.
Type material
Holotype
ECUADOR
•
♂
;
Napo Province
,
Termas de Papallacta
;
3300 m
a.s.l.
;
1 Jul. 2001
;
P. Moret
leg.; “sousbois”;
QCAZ
.
Paratypes
(5 ♂♂,
10 ♀♀
)
ECUADOR
–
Napo Province
•
1 ♂
,
1 ♀
; same collection data as for holotype;
CPM
•
1 ♂
,
1 ♀
;
Papallacta
,
Termas Jamanco
,
Waypoint 41
;
0°22′24.6″ S
,
78°10′5.5″ W
;
3410 m
a.s.l.
;
25 Oct. 2015
;
P. Moret
leg.;
MNHN
•
1 ♀
; same collection data as for preceding;
QCAZ
•
1 ♂
,
3 ♀♀
; same collection data as for preceding;
CPM
•
1 ♂
; same collection data as for preceding; COI voucher PM041-02, BOLD sequence SUM103-18;
CPM
•
1 ♀
; same collection data as for preceding; COI voucher in ethanol PM041-06, BOLD sequence SUM104-18;
CPM
•
2 ♀♀
;
Lago Papallacta
;
3370 m
a.s.l.
;
9 Apr. 1986
;
A. Vigna
;
CPM
•
1 ♀
;
Papallacta
;
2700 m
a.s.l.
;
6–8 Apr. 1979
;
H. Frania
leg.;
UASM
•
1 ♂
;
Lago Papallacta
;
0°20′29″ S
,
78°10′23″ W
;
3400 m
a.s.l.
;
6 Nov. 1999
;
R. Anderson
leg.;
CMNC
.
Diagnostic description
Habitus:
Fig. 52
. Wingless. Body length: 9.1–10.0 mm. Body colour variable, predominantly dark brown with reddish brown areas in some specimens; legs, antennae and mouthparts reddish brown. Elytral microsculpture isodiametric. Head broad and convex, neck slightly constricted, eyes moderately bulging. Pronotum subcordiform, the base much narrower than the apex; sides arcuate anterad, markedly sinuate posterad; hind angles obtuse, sharp; two pairs of lateral setae. Elytra subovate, moderately convex; striae entire, well impressed; intervals flat. Third elytral interval with 3–4 discal setae. Legs: protarsi of the male much broader than those of the female. Fifth metatarsomere asetose ventrally. Last visible abdominal ventrite with one pair (♂) or two pairs (
♀
) of setae along its apical margin.
Male genitalia
:
Fig. 53
. Median lobe arcuate, shortly and bluntly triangular at apex, endophallus unarmed.
Female genitalia
: unstudied.
Figs 52–53.
Dyscolus silvestris
Moret
sp. nov.
, male holotype (QCAZ).
52
. Habitus.
53
. Male aedeagus, median lobe in lateral view.
Comparisons
Dyscolus silvestris
Moret
sp. nov.
is similar to the shorter and broader individuals of
Dyscolus denigratus
. The main differences are: head slightly bigger and broader; sides of the pronotum sinuate basally, hind angles sharply obtuse (completely rounded in
D. denigratus
); femora of the male not swollen as in
D. denigratus
. The apex of the median lobe of the male genitalia has a shorter apex, and the endophallus is entirely unarmed (with a heavily sclerotized area in
D. denigratus
).
Habitat
Upper montane forest on the Amazonian slope of the
Andes
, from
2700 to 3400 m
a.s.l. This species lives in the leaf litter.
Geographic distribution
Only known from the
type
locality around Papallacta in Northern
Ecuador
, probably microendemic.