Drawida Michaelsen 1900
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.
Institutions
- Chinese Academy of Sciences (CN)
- Mindanao State University Naawan (PH)
- Shenyang Normal University (CN)
- Northeast Institute of Geography and Agroecology (CN)
- Langfang Normal University (CN)
Publication Details
- Journal
- Zenodo (CERN European Organization for Nuclear Research)
- Published
- 2025-03-21
- DOI
- https://doi.org/10.5281/zenodo.15066006
- Primary Topic
- Invertebrate Taxonomy and Ecology
- Type
- article
- Field-Weighted Citation Impact
- 0.00