Lesson plan
Hrabea
Hrabea ogumai is a species of oligochaete worm originally described by Yamaguchi in 1936 from specimens collected from subterranean waters in Sapporo. The genus is named after the great oligochaete specialist Dr. Sergej Hrabe, and the species after Prof. K. Oguma. The body of Hrabea is long, and consists of 146–183 segments. The body wall is thin and transparent, but when illuminated, shows a light green tint. It swims actively by lateral undulating movements. The setae are one-pointed. Hrabea ogumai is similar to Stylodrilus subgenus Bythonomus, but lacks the transversal vessels of the middle and posterior parts of the body, has one testis and male funnel (in segment X) instead of two (in segments IX and X), and has a pear-shaped atrium, to which the vas deferens is connected at the apical end, rather than at the lower half.
Article summary
Hrabea ogumai is a species of oligochaete worm originally described by Yamaguchi in 1936 from specimens collected from subterranean waters in Sapporo. The genus is named after the great oligochaete specialist Dr. Sergej Hrabe, and the species after Prof. K. Oguma. The body of Hrabea is long, and consists of 146–183 segments. The body wall is thin and transparent, but when illuminated, shows a light green tint. It swims actively by lateral undulating movements. The setae are one-pointed. Hrabea ogumai is similar to Stylodrilus subgenus Bythonomus, but lacks the transversal vessels of the middle and posterior parts of the body, has one testis and male funnel (in segment X) instead of two (in segments IX and X), and has a pear-shaped atrium, to which the vas deferens is connected at the apical end, rather than at the lower half.
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Discussion questions
- Summarise the article in your own words. Which single claim would you verify first, and why?
- Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
- If two sources disagreed about one of these facts, what would you need in order to trust one over the other?
Bibliography
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Key claims and bibliography are generated from the same tracked claims and sources as the article page.