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 incommunis
Moret
sp. nov.
urn:lsid:zoobank.org:act:
696C59CA-E6A8-46CA-847F-CD9DA0167F60
Figs 9–10
Etymology
Latin adjective meaning ‘not together, not in common’; alluding to the fact that this species is not identical to
D. aquator
Moret
sp. nov.
, despite the results of BIN analysis.
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.; bromeliad fallen on the ground;
QCAZ
.
Paratypes
(2 ♂♂)
ECUADOR
–
Pichincha Province
•
1 ♂
; same collection data as for holotype; leaf litter at night; COI voucher PM081-02, BOLD sequence SUM214-18;
CPM
•
1 ♂
;
Tandayapa
,
Bellavista Lodge
;
0.0147º S
,
78.6833º W
;
2200 m
a.s.l.
;
9 Nov. 2010
;
D. Maddison
leg.; COI voucher PM505, BOLD sequence SUM305-18;
OSAC
.
Diagnostic description
Habitus:
Fig. 10
. Wingless. Body length:
9.6–10.7 mm
. Shiny piceous black, femora dark brown, the rest of the legs, antennae and mouthparts reddish brown. Elytral microsculpture transverse. Eyes moderately bulging, genae flat, mandibles long and acute. Pronotum convex, relatively big, elongate, narrowed backward but not cordiform; sides slightly sinuate posterad, hind angles obtuse and blunt; two pairs of lateral setae. Elytra elongate, humeri obliquely sloped, striae entire, finely impressed, with slight traces of punctation; third interval with three setae; subapical sinuation moderate; apical area triangle-shaped, rounded at apex. Last visible abdominal ventrite with one pair (♂) or two pairs (
♀
) of setae along its apical margin. Legs slender; fourth metatarsomere with or without subapical dorsolateral setae (one seta is present on the external lobe of the
paratype
), apical lobes parallel, the outer lobe 1.5 times longer than the inner lobe.
Male genitalia
:
Fig. 9
. Median lobe evenly arcuate, apex finely acute and slightly sinuate in lateral view, apex of the endophallus with a sclerotized structure formed of scales and denticles.
Female genitalia
: unstudied.
Comparisons
Although the BIN analysis suggests that
D. aquator
Moret
sp. nov.
and
D. incommunis
Moret
sp. nov.
are conspecific, the latter is differentiated from the former by important and stable morphological characters: sides of the pronotum less sinuate with obtuse hind angles; elytra broader and more convex, humeri not completely effaced, subapical sinuation weak, no apical tooth. The aedeagus′ median lobe is more arcuate, with a shorter apex and a sclerotized area differently shaped in the endophallus. Both species are sympatric in their
type
locality (Bellavista Lodge), but they live in different habitats.
Habitat
Montane forest on the Western slope of the
Andes
, at around
2250 m
a.s.l. Unlike its closest relatives, this species has been collected on the forest ground, far from any stream, in the leaf litter and in fallen bromeliads.
Geographic distribution
Southern end of the Chocó biogeographic region in northwestern
Ecuador
. Only known from the
type
locality, probably microendemic.