Tapholeon uniarticulatus Wells, 1967
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publication ID |
https://doi.org/ 10.1080/00222930701695629 |
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persistent identifier |
https://treatment.plazi.org/id/D34587E1-FFAE-FFC3-FE57-FA755611F97B |
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treatment provided by |
Felipe |
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scientific name |
Tapholeon uniarticulatus Wells, 1967 |
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Tapholeon uniarticulatus Wells, 1967
( Figure 13 View Figure 13 )
Type locality
Mozambique, Inhaca Island : Marine Station beach (detritus sand and grass) and off Barriera Vermelha beach (detritus sand) at a depth of 5 m ( Wells 1967) .
Type material
Types are deposited in the collections of the British Museum of Natural History , London ( Wells 1967) .
Material examined
Type material. One female paratype dissected on six slides ( NHM 2006.1495 ), two female and one male paratype in 70% alcohol ( NHM 1967.8.4.113) .
Diagnosis
Body shape ( Figure 13A, B View Figure 13 ) and proportions as in type species. Body somites scarcely clothed with irregular pattern of small denticles, some of which organized in transversal rows. Posterodorsal margin of cephalothorax smooth, of all free somites serrate. Posterodorsal margins of cephalothorax and free somites clothed with slender hairs, all bearing number of sensilla (not in penultimate urosomite). Caudal rami ( Figure 13E View Figure 13 ) flattened; 1.5 times as long as wide; inner margin slightly convex. Seta IV and V rather short. Antennule ( Figure 13C View Figure 13 ) six-segmented; suture between fourth and fifth segment incomplete. Armature formula as in type species. Second segment with strong, armed spine along outer margin. Antenna and mouthparts as in type species. P1 ( Figure 13D View Figure 13 ) with onesegmented exopod, bearing six setae. Swimming legs P2–P4 with three-segmented exopods and two-segmented endopods. Exp-1 and exp-2 equal in length; exp-3 slightly longer. Setal formula in Table I. Female P5 with four baseoendopodal and five exopodal setae. Baseoendopod almost reaching to middle of exopod. Male swimming legs P1–P4 as in female. Endopodal lobe of male P5 obsolete; without seta. Exopod small; bearing three pinnate and one naked seta(e).
Total body length of female 469–470 Mm (n 52; average5470 Mm), of male 398–405 Mm (n 52; average5402 Mm; measured from anterior margin of rostrum to posterior margin of caudal rami). Largest width measured at posterior margin of cephalothorax of female 107 Mm, of male 84 Mm. Measurements by Wells (1967): average length of female 395 Mm (range 351–481 Mm), of male 348 Mm (range 305–396 Mm) (measured from base of rostrum to distal edge of last somite, thus excluding caudal rami).
Remark
Although Wells (1967) describes the P1 exopod as having five setae, his drawing of six setae is correct.
Differential diagnosis
T. uniarticulatus bears two outer spines on the ultimate segments of the exopods of P2–P4 and bears three, four and four setae on the second endopodal segments of P2–P4, respectively. Also, the P1 has a one-segmented exopod.
Distribution
Inhaca Island, Mozambique ( Wells 1967).
| NHM |
University of Nottingham |
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