DOI: 10.5281/zenodo.15139240
title: Table 2 in New insights into the Enchytraeus albidus complex (Annelida, Enchytraeidae), with the description of three new species from seashores in Italy and Croatia

description: Table 2 (continued on next two pages). Comparison of morphological characters (measurements in fixed specimens). The data are derived from this study and from Erséus et al. (2019), Arslan et al. (2018) and according to the author of original species description (marked with*). The data given by us marked with bold, dimensions in μm.
Morphological charactersE. adrianensis sp. nov.E. andrasi sp. nov.E. andrasiformis sp. nov.E. cf. krumbachi (Čejka, 1913), sensu Erséus et al. 2019E. irregularis Nielsen & Christensen, 1961 *, sensu Dózsa-Farkas, 2019E. albidus s. str. Henle,1837, sensu Erséus et al. 2019E. polatdemiri Arslan & Timm, 2018E. möbii (Michaelsen, 1885), sensu Erséus et al. 2019E. albellus Erséus, Klinth & Rota, 2019Segment number51–8429–4130–3865–75*, 40–6641–49*, 47–7658–6940–5560–74*–Length (mm)7.7–24, 9–28.26.7–9.39.6–13.415*, 7–149–1310–137.5–1125–35*–Length of 0–XII segm. (mm)2.2–4.82.5–2.63.4–4.42.9–3.8, 2.7–3.82.3–32.6–3.3, 2.6–2.8–2.3–3.81.6–2.7Diameter at clitellum490–950470–580540–720400–620, 500– 860530–880570–1080, 700–980410–580430–890, 700–980*510–720Coelomocytes15–3015–2020–3010–15, 10–1513–2010–20, 10–1520–3010–1510–25Chaeta-number pre– postclitellarly, ventrally3,4–2,33–2,33, (4)–3,(2)3–4–2, 3–4,(5)– 2,33–33,4,5–2,3,42,3–2,33–4,(5)–2–33,4,5–2,3,(4)Chaetae in clitellum dorsally2, 320, (2)2, 2, 322, 3220, 2Origin of dorsal blood vesselXIV–XVXIVXIV?, XV*, XVXIV–XVIXIII–XVIXII–XIV, (XV)XIV–XVXIV–XVColour of bloodcolourlesscolourlesscolourlesscolourlesspinkcolourless/ yellowishcolourlesscolourlesscolourlessLength of sperm funnel300–500235–330220–470215–305, 200– 560270–600550–1085–295–420400–530Length: width ratio of sperm funnel1.7–42.0–2.53–41.5–2, 3*, 1.2–32–45–751.5–3.52–4Relation of collar to diameter of sperm funnelnarrowernarroweras wide/widerabout as wideas wide / widerabout as wideabout as widewider*–Type of sperm-ducttripartiteuniformuniformtripartiteuniformuniformuniformuniformtripartiteDiameter of duct, if uniform–24–2518–24–15–2230–5530 μm near s.funnel, 15 μm near opening20–25–Diameter of thicker part50–95––50–55, 55–75––––30–45–(65)Diameter of thinner part20–32––15–30, 20–37––––25–35–(45)Ciliation of ductsin thinner partthroughoutthroughoutin thinner partthroughoutthroughoutthroughoutthroughoutthroughoutPosterior extension of ductXV–XVI– XIXXII–XIIIXIIXVI*, XVIII, XIV–XIXXIIXIV–XXXII (XIII– XV)XV–XVI, XVII*XVI–XXVIIISperm-sacspaired in IX–XIpaired in X–XIpaired in X–XIpaired in IX–XIpaired in VIII– XIpaired in VIII–Xunpaired in X–XIpaired in Xpaired in IXFull diameter of male copulatory organ200–350180–250215–300250–280100–150270–375–––Diameter of primary bulb60–12550–7080–12085–90, 70–9070–10060–95, 65–70ca 100110–18070–120Number of secondary glands8 + 2manymanymanymanymany9about 8*manySize of secondary glands (relative to primary bulb)smallersmallersmallersmallersmallersmaller/about samesmallermuch smallermuch smallerExtra copulatory glandabsentabsentpresent (absent)absentpresentabsentabsentabsentabsentLength of spermathecal- duct70–16050–8562–12580–100, 70–15587–110100–12580–85short or medium–Diameter of ectal-duct + glands60–10050–7560–9560–65, 50–7560–9575–155, 60–115–80–12565–120,Diameter of ampulla70–115100–106100–14095–125, 70–14075–13075–215, 85–170120–15080–90(40)–100–215Shape of ampullaround/ovalirregular sac-likeroundedroundsac-likesac-like–roundedirregular sac- likeDiverticulumabsent1 large + 1 smaller1 largeabsent1 large1/more/absent, sack-like, 1 sack-likeabsentabsent1 dorsalMax. length and diameter of chaetae preclitellarly72–112 × 5–7.560–62 × 565–75 × 4–555–75 × 5 60–95 × 6–7.570–100 × 6–7.580–130 × 5–8 110–100 × 6–7.580–110 × 6–760–120 × 5–865–115 × 5–8Max. length and diameter of chaetae postclitellarly70–100 × 5–7.567–75 × 4–567–85 × 4– 562–72 × 5–675–87 × 7–5slightly smaller 100– 120 × 7–7.5same or slightly larger–slightly smallerMature eggs2–7many8–144–102–83–8, 3–4–1–51–4Locality (country)CroatiaItalyItalyCroatia*, Spain, ItalyDenmark*, Hungary, Korealaboratory culture + see in Erséus et al. (2019)TurkeyGermany*, Sweden, Norway, Spain, DenmarkSweden, Norway, Greenland
description: Published as part of 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, pp. 14-16 in European Journal of Taxonomy 870 on page 14, DOI: 10.5852/ejt.2023.870.2123, http://zenodo.org/record/7986633