Peraeospinosus, Sieg, 1986
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publication ID |
https://doi.org/ 10.1080/00222930500450879 |
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DOI |
https://doi.org/10.5281/zenodo.5221064 |
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persistent identifier |
https://treatment.plazi.org/id/03A787E0-FFA0-FFBB-FE22-FF65FB4147A1 |
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treatment provided by |
Felipe |
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scientific name |
Peraeospinosus |
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Key to females of Peraeospinosus View in CoL
1. Head round (length subequal to width)............. 2
– Head narrow (longer than wide)............... 6
2. Pleopods rudimentary............. P. exiliremi n. sp.
– Pleopods normally developed................ 3
3. One distal seta on pereopod 6 propodus longer than the other two... P. rectus View in CoL
– All distal setae on pereopod 6 propodus the same length........ 4
4. Pereonites 2 and 3 longer than wide, pereonite 1 relatively long (two-thirds length of carapace length).............. P. emergensis View in CoL n. sp.
– Pereonites 2 and 3 shorter than long, pereonite 1 relatively short (not longer than half length of carapace)................. 5
5. Endopod uropod with two articles. Cheliped carpus as long as propodus, proximal setae of both pleopod rami separated by a gap from other setae... P. pushkini View in CoL
– Endopod uropod with one article. Cheliped carpus shorter than propodus; pleopods without gap between proximal seta and proximal setae. P. kerguelenensis View in CoL
6. Pereon 1 longer than half of cephalothorax; antennule article 3 three times as long as article 2..................... 7
– Pereon 1 shorter than half of cephalothorax; antennule article 3 twice as long as article 2................ P. subtigaleatus View in CoL n. sp.
7. Pleon longer than or subequal to carapace; pleopod endopod with two dorsal (inner) setae.................. P. magnus View in CoL
– Pleon shorter than carapace; pleopod endopod with one dorsal (inner) seta.. 8
8. Pereon 6 short (one-third length of carapace); pereon 3 longer than carapace; ringlike furrow close to edges of segments......... P. magnificus View in CoL
– Pereon 6 long (half length of carapace); pereon 3 shorter than carapace; ring-like furrows divide pereonites into three subequal parts......... 9
9. Two of three distal setae of pereopod 6 as long as dactylus; carpus of cheliped with well-developed carpal shield and with seven setae on dorsal edge. P. peculiaroides View in CoL
– Two of three distal setae of pereopod 6 half length of dactylus; carpus cheliped with poorly developed carpal shield and with more than 17 setae on dorsal edge P. peculiaris View in CoL
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