Resampling Bouché’s historical localities reveals three new species and helps identifying a new genus of earthworms (Oligochaeta, Hormogastridae and Lumbricidae) in Southeastern France
Author
Gérard, Sylvain
Eco & Sols, INRAE, IRD, CIRAD, SupAgro Montpellier, Campus SupAgro, Bâtiment 12, 2 place Viala, F- 34060 Montpellier cedex 2 (France) Université de Montpellier, CNRS, EPHE, IRD, 1919, route de Mende, F- 34293 Montpellier cedex 5 (France) sylvain. gerard @ ens-paris-saclay. fr, sylvain. gerard 57 @ gmail. com (corresponding author)
sylvain.gerard@ens-paris-saclay.fr & sylvain.gerard57@gmail.com
Author
Marchán, Daniel Fernández
CEFE, Université de Montpellier, CNRS, EPHE, IRD, 1919, route de Mende, F- 34293 Montpellier cedex 5 (France) & Biodiversity, Ecology and Evolution Department, Faculty of Biology, Universidad Complutense de Madrid, Avenida de Séneca, 2 Ciudad Universitaria E- 28040 Madrid (Spain)
danifermch@gmail.com
Author
Navarro, Alejandro Martinez
Biodiversity, Ecology and Evolution Department, Faculty of Biology, Universidad Complutense de Madrid, Avenida de Séneca, 2 Ciudad Universitaria E- 28040 Madrid (Spain)
alejma21@ucm.es
Author
Hedde, Mickaël
Eco & Sols, INRAE, IRD, CIRAD, SupAgro Montpellier, SupAgro, Bâtiment 12, 2 place Viala, F- 34060 Montpellier cedex 2 (France)
hedde@inrae.fr
Author
Decaëns, Thibaud
CEFE, Université de Montpellier, CNRS, EPHE, IRD, 1919, route de Mende, F- 34293 Montpellier cedex 5 (France)
thibaud.decaens@cefe.cnrs.fr
text
Zoosystema
2023
2023-12-05
45
23
749
768
https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/zoosystema2023v45a23.pdf
journal article
281520
10.5252/zoosystema2023v45a23
3f666a8b-4246-43ae-9afe-ce53163f4dc5
1638-9387
10275978
9115B736-A081-44B8-A5D6-DF5D45185BC3
Flabellodrilus luberonensis
Gérard, Decaëns & Marchán
,
n. sp.
(
Figs 3
;
4
)
urn:lsid:zoobank.org:act:
7ACF81A1-FE52-4CB4-AC8D-9081EB9A5CB9
TYPE
MATERIAL
. —
Holotype
.
France
•
1 adult
specimen;
Provence-Alpes-Côte d’Azur
,
Vaucluse
, D943, 84490 Saint-Saturnin-les-Apt, in the soil;
43°57’46”N
,
5°20’13”E
;
434 m
a.s.l.
;
25.XI.2021
;
T. Decaëns
,
D. F. Marchán
leg.;
MNHN
(
BOLD Sample ID: DFM-1016
).
Paratypes
.
France
•
2 adult
specimens; same data as holotype;
Eco
&
Sols
(
BOLD Sample ID: DFM-1017, DFM-1020
)
•
2 adult
specimens; same data as holotype;
MNHN
(
BOLD Sample ID: DFM-1018, DFM-1019
).
Other material
.
France
•
8 sub-adult
specimens; same data as holotype;
Eco
&
Sols
.
ETYMOLOGY
. — The species name is derived from the massif of Luberon where the
type
specimens were found.
ECOLOGY
. —
F. luberonensis
Gérard, Decaëns & Marchán
,
n. gen., n. sp.
was found in a Mediterranean shrubland (garrigue) soil at low elevation (
434 m
a.s.l.).
DISTRIBUTION. —
F. luberonensis
Gérard, Decaëns & Marchán
,
n. gen., n. sp.
is only known from the
type
locality, near the city of Saint-Saturnin-les-Apt, between the massif of Luberon and the Vaucluse mountains in the Vaucluse department (
Provence-Alpes-Côte d’Azur
,
France
) (
Fig. 5
). It is located in the Luberon Regional Natural Park (Parc naturel régional du Luberon).
DESCRIPTION
External morphology (
Fig. 3A, B
)
Body shape cylindrical. Body pigmentation absent, mid-segmental dark dots in the cephalic region. Average body length after ethanol fixation:
80 mm
(range:
70 to 100 mm
; n =
3 adult
specimens;
holotype
:
100 mm
). Average body mass:
1.163 g
(range:
0.855 to 1.398 g
; n = 3;
holotype
:
1.398 g
). Average diameter:
4.6 mm
in the preclitellar region (range:
4.2 to 5.4 mm
; n = 5;
holotype
:
5.4 mm
),
5.8 mm
in the clitellum (range:
5.2 to 6.8 mm
; n = 5;
holotype
:
6.8 mm
),
4.6 mm
in the postclitellar region (range:
4.2 to 5.2 mm
; n = 5;
holotype
:
4.7 mm
). Average number of segments: 283 (range: 187 to353; n = 3;
holotype
: 309). Prostomium of closed epilobic
type
. Setae closely paired. Setal arrangement: aa:ab:bc:cd:dd = 14:2:8:1:32. Clitellum in XXXII-XLII (XLIII). Genital markings in XI-XII, randomly unpaired in XXVI-XXVIII, intraclitellar in XXXIV, in ab. Tubercula pubertatis: protruding band in XXXV-XL. Male pores: one pair in XV. Ovipores: one pair in 1/2 XIV, at 1 × ab dorsally from b. Spermathecal pores not visible. Nephridial pores not visible.
FIG
. 3. —
Flabellodrilus luberonensis
Gérard, Decaëns & Marchán
,
n. gen., n. sp.
:
A
, external view of the anterior body;
B
, lateral view of the anterior body;
C
, dissection of the anterior body. Abbreviations:
CL
, clitellum,
CR
, crop,
GM
, genital marks,
GZ
, gizzard,
IN
, intestine,
MP
, male pore,
NE
, nephridia,
SEP
, septa,
SP
, permathecae,
SV
, seminal vesicles,
TP
, tubercula pubertatis. Photos: T. Decaëns. Scale bars: 5 mm.
Internal anatomy (
Figs 3C
;
4
)
Septa
: thickened from 5/6 to 9/10, otherwise membranous. Crop in XV-XVI. Muscular gizzard in XVII-XVIII followed by a membranous pouch in XIX, with an average size (width × length) of 3.55 ×
2.10 mm
. Calciferous glands: in X-XIV, forming a pair of spherical lobes in X. OEsophagus-intestine transition in XV.Typhlosole starts in XX, forming four folded lamellae. Hearts: in VI-XI. Excretory apparatus: one pair of holonephridia per segment, nephridial vesicles sigmoid with a sub-terminal constriction followed by a loop (
Fig. 4
). Seminal vesicles: two pairs in XI-XII, large and lobulated. Spermathecae: two pairs in X-XI, intracoelomic, sessile and double (
Fig. 3C
).
FIG
. 4. — Pre-clitellar nephridia of
Flabellodrilus luberonensis
Gérard,Decaëns & Marchán
,
n. gen., n. sp.
Scale bar: 1 mm. Photo: D. F. Marchán.
REMARKS
This species can be distinguished from its closest relative
F. bartolii
bartolii
(
Bouché, 1970
)
n. comb.
by the position of its clitellum and tubercula pubertatis (
Table 4
) and by their remarkably high genetic distance (12.14% uncorrected pairwise COI distance).