Andaniotes pseudolinearis, Berge, 2001
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publication ID |
https://doi.org/ 10.1080/00222930152123620 |
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persistent identifier |
https://treatment.plazi.org/id/039A9F20-FFA6-FFD7-FE2B-FCB7FE20F973 |
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treatment provided by |
Felipe |
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scientific name |
Andaniotes pseudolinearis |
| status |
sp. nov. |
Andaniotes pseudolinearis View in CoL n.sp.
(®gures 18±22)
HOLOTYPE: Female A, IRScNB WED 96 ANT XIII/4 , station 16.
PARATYPES: two females, IRScNB WED 96 ANT XIII/4 , station 16, 73 ss 53 ¾ S, 22 ss 26 ¾ W, 242± 246 m .
Additional material: Berlin AIII/44 , four specimens , 72 ss 53.10 ¾ S, 19 ss 29.33 ¾ W, 421±429 m; VictoriaÐJ38733, two females, 66 ss 53.69 ¾ S, 63 ss 06.34 ¾ E, 367 m; J45338 View Materials , one male , 67 ss 10.9 ¾ S, 69 ss 14.8 ¾ E, 307 m; IRScNB: WED 96 ANT XIII/3 : st 11, one female , 73 ss 22 ¾ S, 21 ss 10 ¾ W, 333±338 m; st. 16, three specimens (one male, two females), 73 ss 53 ¾ S, 22 ss 26 ¾ W, 242± 246 m. WED 89 ANT VII/4 : st. 272, one male , 73 ss 27 ¾ S, 21 ss 34 ¾ W, 406±409 m; st. 275, one female, 71 ss 40 ¾ S, 12 ss 35 ¾ W, 303± 330 m. EABN 67 : st 236, three specimens , 70 ss 19 ¾ S, 24 ss 14 ¾ E, 200 m. EAB 61: st. 134, two specimens, 70 ss 20 ¾ S, 24 ss 13 ¾ E, 240 m; st. 136, two specimens, 70 ss 20 ¾ S, 24 ss 13 ¾ E, 240 m; st. 199, one specimen, 70 ss 20 ¾ S, 24 ss 13 ¾ E, 240 m.
Distribution
Appears to be Antarctic circumpolar, restricted to true polar areas (66±73 ss S), 242± 429 m.
Description
Length of females: 15±18 mm, male: 18 mm.
Rostrum very small.
Antennae short. Antenna 1 as long as antenna 2; ¯agellum four-articulate; accessory ¯agellum article 2 present. Antenna 2 peduncle (articles 3±5) longer than ¯agellum; article 3 short, about as long as broad; article 4 shorter than article 5.
Epistome produced laterally; broad and round; epistomal plate (medial keel) produced into a small elongate medial ridge covering the entire epistome.
Mouthparts not elongate or pointed.
Mandible incisor transverse; toothed; left lacinia mobilis present, reduced, laterally straight, conical.
Maxilla 1 palp uni-articulate, rectangular, setae long, simple, slender; apex not reaching above the apex of outer plate; outer plate distally rounded; ST in two parallel rows, ®rst marginal and second submarginal, ST ®rst row with six setae (ST1±5, ST7), ST 1 ordinary (similar to ST 2±4), gap between ST 5 and ST 7; ST A±C present, part of second row; inner plate without a well developed shoulder, setae pappose.
Maxilla 2 ordinary; outer plate setae without distal hooks or cleft; inner plate setae row A covering the entire margin, clearly separated from row B, row A setae pappose, ®rst three or four setae diOEerentiated from the other setae (weakly pappopectinate); row B setae proximally pappose, distally with cusps absent; row C present; row D absent.
Maxilliped palp four-articulate; article 2 distally unproduced; dactylus distally simple (pointed); inner plate not exceeding base of palp article 1, with two nodular setae; medial setae-row present, not reduced, transverse, setae simple; distal setaerow present; inner setae-row present, not reduced (more than two setae), not conspicuously large; outer plate outer setae-row present, marginal, setae attached normally, long, robust, straight; inner setae-row present but strongly reduced, setae long, robust, slender, appressed to outer setae-row; distal setae-group absent.
Labrum very short; lobes symmetrical and reduced.
Labium distally broad, oval.
Coxal plates and basis on the pereopods smooth. Coxae 1±3 contiguous.
Pereopod 1 coxal plate not as deep as basis; propodus subovate.
Pereopod 2 longer and thinner than pereopod 1; ischium elongate, ratio length:- breadth exceeding 1.5; ischium distal posterior margin with plumose setae; propodus subovate; palm absent.
Pereopod 4 coxa posteroventral lobe medium sized, not reaching the base of pereon segment 7; basis anterior margin without long setae, posterior margin with long setae, plumose setae on distal anterior and posterior margins present; ischium plumose setae on posterior distal margin present.
Pereopod 6 basis posteriorly expanded, expansion conspicuous, rounded posteriorly, without a row of long plumose setae.
Pereopod 7 basis anterior margin straight, distally rounded; without medial row of setae.
Oostegites on pereopods 2±5. Gills on pereopods 2±7.
Pleonites 1±3 dorsally smooth.
Urosomites 2 and 3 free. Uropod 1 peduncle longer than rami, outer ramus as long as inner. Uropod 2 peduncle longer than rami, outer ramus shorter than inner. Uropod 3 peduncle longer than half the length of rami, outer ramus two-articulate, outer ramus longer than inner.
Telson longer than broad; shorter than uropod 3 peduncle; no submarginal setae on apex of each lobe; cleft, apically rounded.
Males. Pereopod 2 propodus equally sized in males and females. Urosome conspicuously larger than in females; uropod 1 outer ramus ordinary; uropod 2 outer ramus enlarged, curved upwards; uropod 3 rami not reduced.
Etymology The name of the species refers to its general similarity to A. linearis . Remarks
At ®rst glance, this species seems to represent just large specimens of A. linearis . However, on closer examination, the two species diOEer in some major aspects: the present species has a broad and rounded basis on pereopod 6, and also lacks the conspicuous row of large robust slender setae found in A. linearis . Furthermore, the long article 2 and the short and narrow article 3 of the maxilliped palp and the somewhat elongate telson are obvious diOEerences between the two species. The present species also has strong a nities to A. poorei , but the two species can easily be separated on the large size of the present species, and by article 2 and 3 of the maxilliped palp as described above.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.