Fridericia cf. sohlenii Rota, Healy & Erséus, 1998

Felföldi, Tamás, Dózsa-Farkas, Klára, Nagy, Hajnalka & Hong, Yong, 2020, Three new enchytraeid species (Enchytraeidae, Annelida) from mountain soils of Korea and ten species new for the country, Zootaxa 4896 (1), pp. 1-45 : 30-31

publication ID

https://doi.org/ 10.11646/zootaxa.4896.1.1

publication LSID

lsid:zoobank.org:pub:BC9F67CA-CCC5-4525-8915-0B2549E17F5F

DOI

https://doi.org/10.5281/zenodo.4362424

persistent identifier

https://treatment.plazi.org/id/039287AB-FFC0-796D-7ED6-7C13FDE5FDDA

treatment provided by

Plazi

scientific name

Fridericia cf. sohlenii Rota, Healy & Erséus, 1998
status

 

Fridericia cf. sohlenii Rota, Healy & Erséus, 1998 View in CoL

( Figure 16 View FIGURE 16 )

Material examined. Five specimens (three were deposited in the National Institute of Biological Resources, Korea; NIBRIV0000860938, in 70 % ethanol).

Our observations substantially agree with the description of Rota, Healy & Erséus (1998), except for a few traits (see details in discussion). Middle-large worms, 10–14 mm long, 390–430 μm wide at clitellum in vivo, segments 40–49 (in the original description the number of segments is slightly higher: 45–56). Body covered with debris and soil particles. Chaetae 2 in all bundles, several parcels of detached chaetae in the coelom ( Fig. 16F View FIGURE 16 ). Clitellum girdle-shaped, gland cells form an irregular pattern ( Figs 16B, C View FIGURE 16 ), between the penial bulbs mostly granular cells, but some hyaline cells can occur ( Fig. 16D View FIGURE 16 ). Brain about twice as long as wide ( Fig. 16A View FIGURE 16 ). Oesophageal appendages a-type. Dorsal blood vessel from XV–XVI, chylus cells in X–XI, occupying 2 segments. Mucocytes 27–36 μm long with refractile granules at periphery (b-type) ( Figs 16 View FIGURE 16 F–G). Lenticytes large, 9–12 μm long. Five pairs of preclitellar nephridia at 6/7–10/11. Seminal vesicle absent. Sperm funnels cylindrical, 135–157 μm long, 1.8–3 times longer than wide in vivo ( Fig. 16H View FIGURE 16 ), uniformly granular. Penial bulbs about 160 μm long and 90 μm wide in vivo ( Fig. 16D View FIGURE 16 ). Bursal slit not T-shaped as in the original description, but longitudinal. Spermathecal ampulla carrying two rounded sessile diverticula. Ectal duct long, about 190–250 μm long and 15 μm wide, with one or two ectal glands at orifice. Diverticula mostly empty; sperm, when present, not rotating ( Figs 16I, J View FIGURE 16 ).

Distribution and habitat in Korea. Mt. Gyebangsan, Nodong-ri, Yongpyeong-myeon, Pyeongchang-gun, Gangwon-do, Quercus mongolica forest, N 37°42’27.92”, E 128°29’02.34”, 848 m asl; Mt. Odaesan, Sangwonsa, Dongsan-ri, Jinbu-myeon, Pyeongchang-gun, Gangwon-do, Korea, soil and litter layers, mixed forest, N 37°47’03.63”, E 128°33’44.06”, 906 m asl.

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