Drawida Michaelsen 1900
Year: 2025
Type: other
Abstract: GenusDrawidaMichaelsen, 1900 Generic diagnosis. Body size, small to giant [e. g., D. japonica (28 ~ mm); D. hattamimizu (~ 1000 mm)]. Prostomium prolobous. Clitellum is commonly in X-XIII, usually extending forward or backward [e. g., D. nemora (IX, X-XIII, XIV)], or inconspicuous. Setae four pairs, lumbricine. Dorsal pores more usually absent or intermittently present [e. g., D. companio Blakemore, 2014 (15 / 16, 19 / 20 / 21, 25 / 26 / 27)]. Male pores in or near 10 / 11. Female pores usually paired in 11 / 12, or XII, or inconspicuous. Spermathecal pores paired in 7 / 8, or inconspicuous. A pair of testis sacs typically located in IX-X. A pair of ovisacs extends backward from ovary chamber (typically in XI). Spermathecae paired in VII-VIII. Two to six gizzards within segments XI – XVIII [or especially up to nine in D. hattamimizu extending to XX or XXI; five or six in D. nilamburensis Bourne, 1894 in XXVII – XXXIV]. Oesophageal gizzards, calciferous glands, and intestinal caeca absent.
Authors: Liu, Min, Li, Jiangni, Zhang, Yufeng, Aspe, Nonillon M., Wu, Donghui, Zhao, Huifeng, Zheng, Guo
Language: English
Domain: Life Sciences
Open Access status: green
OpenAlex ID: W6893205340
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