| 11. | Additionally, the palp of right maxilla 1 has 4 setae along its outer margin.
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| 12. | A thumb-like palp is present.
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| 13. | A broad and flat palp is present.
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| 14. | Its maxillula has a bilobed palp, while its maxilla shows no characteristics of note.
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| 15. | It then tries and often succeeds in inserting the other palp into the female's second orifice.
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| 16. | The maxillula has both laciniae slender and ending in bristles and spines; the palp is distinctly bifid.
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| 17. | The male redback stores his sperm in a palp _ a thin, tightly coiled organ on his head.
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| 18. | The forelegs are palp-like and the other two pairs of legs are modified to protect the gills.
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| 19. | This species can be identified by its chaeotaxy, metallic blue color, club-shaped palp and brown calypters.
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| 20. | The males of this genus amputate one of their palps before maturation and enter their adult life with one palp only.
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