Enchytraeus albidus Henle, 1837
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publication ID |
https://doi.org/ 10.5852/ejt.2023.870.2123 |
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publication LSID |
lsid:zoobank.org:pub:508560B7-BD89-472A-B3FD-F48851B024C3 |
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DOI |
https://doi.org/10.5281/zenodo.7987795 |
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persistent identifier |
https://treatment.plazi.org/id/B857879A-FFCA-FFA5-FDAC-5810FE55FB46 |
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treatment provided by |
Felipe |
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scientific name |
Enchytraeus albidus Henle, 1837 |
| status |
s. str. |
Enchytraeus albidus Henle, 1837 View in CoL View at ENA s. str.
Figs 1F View Fig , 6 View Fig , Tables 1–2 View Table 1 View Table 2
Material examined
HUNGARY • 16 specs; Budapest; ID 1300 to 1301, 1461 to 1462 , slide 3012, 3013, 3016 to 3018, 3024, 3028, 3044 to 3048 ; ELTE .
Description of new material
We investigated a living population of E. albidus s. str. from the laboratory of Szent István University, Hungary, which was derived from the culture of ECT Oekotoxikologie GmbH, Flörsheim, Germany. From this culture the neotype of E. albidus has been selected ( Erséus et al. 2019). In this way our morphological characters substantially agree with those described in Erséus et al. (2019).
MEASUREMENTS. Segment number 58–65, body length 15.5–20.8 mm, 850–900 μm wide at clitellum in vivo (700–980 μm, when fixed).
CHAETAE. In ventral bundles mostly 3–5 ( Fig. 6A View Fig ).
BRAIN. 125–165 μm long, 1.2–1.8 × as long as wide (fixed). PHARYNGEAL GLANDS. Variable, all converging or connected dorsally, or not converging (in Erséus et al. 2019: all converging).
COELOMOCYTES. 17–32 μm long, mostly oval or spindle-shaped, granulated (in Erséus et al. 2019: 10– 20 μm). In the coelomocytes mostly shining, hyaline, round or tetragonal corpuscles (diameter 9–15 μm) are also present, similar to E. adrianensis sp. nov.
CLITELLUM. Hyalocytes and granulocytes of clitellum irregularly arranged dorsally ( Fig. 6B View Fig ). Ventral surface of XII with a recess between lip-like folds ( Fig. 6C–D, J View Fig ).
NEPHRIDIA. Four pairs of nephridia preclitellarly ( Fig. 6G View Fig ).
SPERM FUNNELS. 700–820 μm long in vivo, 5–6 × as long as wide, the collar as wide as funnel body ( Fig. 6H View Fig ). Head of spermatozoa 30–60 μm long. Sperm duct ciliated ( Fig. 6E–F View Fig ), elongate, about the same width throughout (30–44 μm wide, with 9–16 μm thick wall), coiled, extending into XIV–XVII.
MALE COPULATORY ORGANS. Male glands multiple: one larger rounded primary bulb (65–80 μm, fixed) and numerous smaller glands (40–50 μm, fixed) ( Fig. 6I View Fig ).
SPERMATHECAE. Ectal duct of spermatheca 105–200 μm long, diameter of glands around duct 90–130 μm in vivo. Diverticulum of ampulla 180–237 μm long and 70–125 μm wide in vivo ( Figs 1F View Fig , 6K–L View Fig ).
For similarities and differences of the species of Enchytraeus studied by us, see Table 2 View Table 2 .
Distribution and habitat
Laboratory culture. For additional references, including synonymies and further distributional data, see Erséus et al. (2019).
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.