Andiorrhinus (Turedrilus) pascalei 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
Andiorrhinus
Andiorrhinus pascalei

description: Andiorrhinus (Turedrilus) pascalei Bartz & Decaëns, n. sp.
(Fig. 5)
urn:lsid:zoobank.org:act: 9E3C409B-0CD2-4876-9D94-EAF68E2D2C52
TYPE MATERIAL. — Holotype. French Guiana • Adult (with posterior regeneration); 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-MI15-0174; MNHN.
Paratypes. French Guiana • 1 adult specimen; Tumuc-Humac, Mitaraka Massif, plateau forest at base camp; 2°14’2”N, 54°27’1”W; 331 m a.s.l.; III.2015; T. Decaëns, E. Lapied leg.; BOLD Sample ID: EW-MI15-0176; CEFE.
OTHER MATERIAL EXAMINED. — French Guiana • 1 juvenile specimen; Tumuc-Humac, Mitaraka Massif, plateau forest at base camp; 2°14’2”N, 54°27’1”W; 331 m a.s.l.; III.2015; T. Decaëns, E. Lapied leg.; BOLD Sample ID: EW-MI15-0177; MNHN.
ETYMOLOGY. — This species is named in acknowledgment to Olivier Pascal, who organised the “Our Planet Reviewed” in the Mitaraka Massif.
ECOLOGY. — Andiorrhinus (T.) pascalei Bartz & Decaëns, n. sp. was found in the organo-mineral soil at the base camp of the expedition in a plateau forest ecosystem (Fig. 5D, E).
DISTRIBUTION. — Andiorrhinus (T.) pascalei Bartz & Decaëns, n. sp. is known from the Mitaraka Massif.
DESCRIPTION
External morphology (Fig. 5A)
Body shape cylindrical. Body pigmentation absent. Body length: 196 mm in the holotype, 158 mm in the paratype, after ethanol fixation. Body mass: 11.90 g after ethanol fixation in the holotype, 5.51 g in the paratype. Diameter: 8 to 9 mm in the preclitellar region, 10 to 12 mm in the clitellum, 9 to 11 mm in the postclitellar region. Number of segments: 244 in the holotype, 230 in the paratype. Prostomium proepilobic. Setae closely paired, ab beginning in III and cd in IV, ab ventral and cd mid-lateral to dorsal. Postclitellar setal arrangement aa:ab:bc:cd:dd = 16:1:11:1:33. Clitellum in (dorsal XIII) XIV-XXI (dorsal XXII, XXIII), saddle-shaped. Genital markings in IX to XI, intraclitellar in XVII-XX (ab position).Tubercula pubertatis linear in 1/4XV-3/4 XX. Male pores not recognised, and ovipores not visible. Spermathecal pores in 6/7, 7/8 and 8/9. Nephridial pores begining in III, in D line.
Internal anatomy (Fig. 5B, C)
Septa: strongly thickened in 6/7 to 13/14, otherwise membranous. Gizzard: muscular and well developed in VI, with an average size (width × length) of 3.45 × 4.45 mm. Calciferous glands: three pairs in VII-IX, with lamellar structure (Fig. 5B). Esophagus-intestine transition in XX; intestine without caeca. Typhlosole abruptly begining in XX/XXI, structured as a long thick folded lamella occupying all the lumen. Intestinal hearts: two pairs of large hearts in X-XI, more developed in XI than in X. Excretory system holoic. Testes sacs: in X and XI containing the two pairs of testes and funnels, ventrally attached to septa 9/10 and 10/11. Seminal vesicles: two pairs in XI-XII, forming very small white mass under the alimentary canal, the pair in XI slightly smaller than in XII, both at least three times smaller than the hearts. Spermathecae: three pairs in VII to IX, very small and round spatula-shaped, attached to septa 6/7, 7/8 and 8/9, without diverticula (Fig. 5C).
REMARKS
Andiorrhinus (T.) pascalei Bartz & Decaëns, n. sp. is attached to the subgenus Turedrilus by the position of the last pair of intestinal hearts in XI. Within Turedrilus it is close to Andiorrhinus (Turedrilus) royeroi Drachenberg, 1991, Andiorrhinus (Turedrilus) samuelensis Righi, 1986, Andiorrhinus (Turedrilus) baniwa Righi & Nemeth, 1983, and Andiorrhinus (Turedrilus) brunneus (Michaelsen, 1892), all of which have three pairs of spermathecae. It differs from A. (T.) royeroi by the position of the spermathecae in VII-IX instead of VI-VIII, and from all species mentioned by the unique position of its clitellum and tubercula pubertatis (Hernández-García et al. 2018a). This species corresponds to OTU#084 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 pages 203-204, DOI: 10.5252/zoosystema2024v46a9, http://zenodo.org/record/12551981