Martiodrilus (Botaria) pavliceki Bartz & Decaens 2024, n. sp.
Creators: name: Decaëns, Thibaud
name: Bartz, Marie Luise Carolina
name: Bartz, arolina
name: Feijoo-Martínez, Alexander
name: Goulpeau, Arnaud
name: Lapied, Emmanuel
name: Marchán, Daniel F.
name: Maggia, Marie-Eugénie
name: Papuga, Guillaume
name: James, Samuel W.
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Annelida
Clitellata
Crassiclitellata
Glossoscolecidae
Martiodrilus
Martiodrilus pavliceki

description: Martiodrilus (Botaria) pavliceki Bartz & Decaëns, n. sp.
(Fig. 9)
urn:lsid:zoobank.org:act: F97CD986-B5A0-42ED-B68F-277EC269F565
TYPE MATERIAL. — Holotype. French Guiana • Adult; Tumuc-Humac, Mitaraka Massif, plateau forest at base camp, in the soil; 2°14’2”N, 54°27’1”W; 331 m a.s.l.; III.2015; T. Decaëns, E. Lapied leg.; BOLD Sample ID: EW-MI15-0283; MNHN.
OTHER MATERIAL EXAMINED. — French Guiana • 3 juvenile specimens; Tumuc-Humac, Mitaraka Massif, slope forest on DIADEMA project C trail; 2°14’5”N, 54°26’42”W; 377 m a.s.l.; III.2015; T. Decaëns, E. Lapied leg.; BOLD Sample ID: EW-MI15-0058, EW-MI15-0059, EW-MI15-0060; MNHN.
ETYMOLOGY. — This species is named in honour of Tomas Pavlicek, in acknowledgement to his contribution for the study of earthworms in French Guiana and in other regions of the World.
ECOLOGY. — Martiodrilus (B.) pavliceki Bartz & Decaëns, n. sp. has been found in slope forests (75% of specimens) and in plateau forests (25%) (Fig. 9D). All specimens were collected in the organo-mineral soil (Fig. 9E).
DISTRIBUTION. — Martiodrilus (B.) pavliceki Bartz & Decaëns, n. sp. is only known from the Mitaraka Massif.
DESCRIPTION
External morphology (Fig. 9A, B)
Body shape cylindrical, with flattened tail. Body pigmentation dorsally yellow-brown before clitellum, brown after clitellum with anterior to posterior gradient, ventrally beige, clitellum light grey. Body length: 95 mm after ethanol fixation. Body mass: 1.08 g after ethanol fixation. Diameter: 4 mm in the preclitellar region, 5.2 mm in the clitellum, 4.4 mm in the postclitellar region. Number of segments: 156. Prostomium proepilobic.One pair of longitudinal grooves going anterior to posterior through segment I in line of nephridial pores. Setae closely paired, ab beginning in II, cd in III. Setal arrangement aa:ab:bc:cd:dd = 5:1:6:1:20. Clitellum in (dorsal XIV) XV-XXV (dorsal XXVI), saddle-shaped (Fig. 9A). Genital markings in V-XVIII, intraclitellar in XVIII-XXIV (ab position). Tubercula pubertatis linear in XIX-1/nXXV (Fig. 9B). Male pores not recognised, and ovipores not visible. Spermathecal pores not recognised. Nephridial pores begining in II, in C line.
Internal anatomy (Fig. 9C)
Septa: membranous, slightly thickened in 9/10 to 16/17. Gizzard: muscular and well developed in VI, with an average size (width × length) of 2.70 × 2.90 mm. Calciferous glands: eight pairs, the first five pairs (VII-XI) small and globular to pear-shaped, the three next pairs (XII-XIV) two times larger and kidney-shaped; all with a lobular distal appendix. Esophagus-intestine transition in XVIII; intestine without caeca. Typhlosole abruptly begining in XXV, structured as a long thin folded lamella occupying all the lumen. Hearts: five pairs in VII-XI, the two intestinal pairs in X-XI larger and enclosed to testes sacs. Excretory apparatus holoic, nephridia with simple nephrostome. Testes sacs: periesophageal in X and XI, enclosing seminal vesicles, heart and calciferous gland. Seminal vesicles: two pairs in XI-XII; first pair extending to X and forming lobes in XI; second pair lobular extending to XIV without perforating septa. Spermathecae: three pairs in VII to IX, formed by a thin duct terminated by a round and flattened sac; last pair larger than the two first ones.
REMARKS
Martiodrilus (B.) pavliceki Bartz & Decaëns, n. sp. resembles species of subgenus Botaria which share a clitellum in XV-XXV, including Martiodrilus (Botaria) tchoukouchipan Decaëns & Bartz, n. sp., Martiodrilus (Botaria) bicolor (Michaelsen, 1913), Martiodrilus (Botaria) euzonus (Cognetti de Martiis, 1904), M. (B.) gara, M. (B.) gravis, Martiodrilus (Botaria) minoriformis Zicsi, 1998, Martiodrilus (Botaria) poncei Zicsi, 1998 and Martiodrilus (Botaria) tutus (Cognetti de Martiis, 1904). It differs from all these species, by the unique position of its tubercula pubertatis in XIX-1/nXXV. It is also noticeably larger than M. (B.) tchoukouchipan Decaëns & Bartz, n. sp. (95 mm vs 55-75 mm in the latter), and has flattened sac-like spermathecae whereas they are elongated in M. (B.) tchoukouchipan Decaëns & Bartz, n. sp. Martiodrilus (B.) pavliceki Bartz & Decaëns, n. sp. is clearly separated from other species of Martiodrilus from the Mitaraka Massif by its COI barcode (Table 2). This species corresponds to OTU#076 in Maggia et al. (2021).
description: Published as part of Decaëns, Thibaud, Bartz, Marie Luise Carolina, Bartz, arolina, Feijoo-Martínez, Alexander, Goulpeau, Arnaud, Lapied, Emmanuel, Marchán, Daniel F., Maggia, Marie-Eugénie, Papuga, Guillaume & James, Samuel W., 2024, Earthworms (Oligochaeta, Clitellata) of the Mitaraka range (French Guiana): commented checklist with description of one genus and eighteen species new to science, pp. 196-244 in Zoosystema 46 (9) on page 211, DOI: 10.5252/zoosystema2024v46a9, http://zenodo.org/record/12551981