Key to families
Key to families of Cumacea
2(b). Second antenna of male with short articles in main flagellum. Pleopods usually present =>
3. Process on pleopod endopod?
3(a). Male with 5 pairs of pleopods (rarely with 3, 2 or none). Pleopod endopod bears a process. Thoracic segments usually reduced.
3(b). Male with 2 pairs of pleopods (rarely one or none). Pleopod endopod without a process.No reduction of thoracic segments
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