Enchytraeus sp.2

Nagy, Hajnalka, Dózsa-Farkas, Klára & Felföldi, Tamás, 2023, New insights into the Enchytraeus albidus complex (Annelida, Enchytraeidae), with the description of three new species from seashores in Italy and Croatia, European Journal of Taxonomy 870, pp. 107-145 : 31

Enchytraeus sp.2 from Svalbard

Material examined

SVALBARD • 7 specs; Kongsfjorden ; ID 264 to 265 , slide No. 2140 to 2141, 3039, 3217 to 3218 ; ELTE.

Description

Short description of fixed specimens:

MEASUREMENTS. Body length 11–16 mm, segment number 55–66, 650–800 μm wide at clitellum.

CHAETAE. Chaetal formula: 3,2–2:3(2)–2. Preclitellar chaetae 60–85 μm × 7 μm ventrally, 55–58 μm × 6 μm laterally, postclitellar chaetae 75–85 μm × 6 μm ventrally, and 58–75 μm × 6 μm laterally.

DORSAL VESSEL. From XIII–XIV.

SPERM SACS. Large sperm sacs, located in X–XI.

SPERM FUNNEL. 376 μm long, about 3 × as long as wide, fixed. Sperm duct about the same wide in all length (20–25 μm wide).

MALE COPULATORY ORGANS. Male glands multiple: one larger rounded primary bulb (diameter 75–85 μm) and numerous smaller glands.

SPERMATHECAE. Ectal duct of spermatheca 62–90 μm long with large glands around orifice of duct. Ampulla spherical (diameter 120–140 μm) with one diverticulum (about 270 μm long), or 2–3 smaller diverticula (80–110 μm long). Additional specimens would be required for accurate description.

Distribution and habitat

Kongsfjorden, Svalbard, under a bird cliff ‘compost’ of bird excrements, mosses, vascular plants and nest material.