Epixanthus frontalis (H. Milne Edwards, 1834 )
publication ID |
https://doi.org/ 10.5281/zenodo.13229521 |
DOI |
https://doi.org/10.5281/zenodo.13229563 |
persistent identifier |
https://treatment.plazi.org/id/81700F6C-523E-4529-FF3B-F98CFC2BF948 |
treatment provided by |
Felipe |
scientific name |
Epixanthus frontalis (H. Milne Edwards, 1834 ) |
status |
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Epixanthus frontalis (H. Milne Edwards, 1834) View in CoL
( Figs. 5-8 View Fig View Fig View Fig View Fig )
Larval description. – Carapace ( Fig. 5a View Fig ): dorsal spine long and curved distally, longer than rostral spine; rostral spine approximately equal in length to antennal protopod and without spinulation distally; lateral spines present and straight; 1 pair of posterodorsal setae; ventral margin without setae; eyes sessile.
Antennule ( Fig. 5b View Fig ): uniramous, endopod absent; exopod unsegmented with 2 broad, long, 1 long slender, 2 shorter, slender terminal aesthetascs of unequal length and 1 short terminal seta.
Antenna ( Fig. 5c View Fig ): protopodal process distally, bilaterally spinulate, approximately equal in length to rostral spine; endopod absent; exopod ca. 41% length of protopod, possessing 3 (1 long subterminal, 2 unequal terminal) setae with small spinules at base.
Mandible: endopod palp absent.
Maxillule ( Fig. 6a View Fig ): epipod seta absent; coxal endite with 7 setae; basial endite with 5 setal processes and 2 small teeth; endopod 2-segmented, proximal segment with 1 seta; distal segment with 6 (2 subterminal, 4 terminal) setae; exopod seta absent.
Maxilla ( Fig. 6b View Fig ): coxal endite bilobed with 5+4 setae; basial endite bilobed with 5+4 setae; endopod bilobed, with 3+5 (2 subterminal, 3 terminal) setae; exopod (scaphognathite) margin with 4 setae and 1 long distal stout process.
First maxilliped ( Fig. 7a View Fig ): coxal segment with 1 seta; basis with 10 setae arranged 2,2,3,3; endopod 5-segmented with 3,2,1,2,5 (1 subterminal, 4 terminal) setae respectively; exopod 2-segmented, distal segment with 4 long terminal plumose natatory setae.
Second maxilliped ( Fig. 7b View Fig ): coxa without setae; basis with 4 setae arranged 1,1,1,1; endopod 3-segmented, with 1,1,6 (3 subterminal, 3 terminal) setae respectively; exopod 2- segmented, distal segment with 4 long terminal plumose natatory setae.
Third maxilliped: absent.
Pereiopods: absent.
Abdomen ( Figs. 8a, b View Fig ): 5 somites; somite 2 with 1 pair of dorsolateral processes directed anteriorly; somite 3 with 1 pair of dorsolateral processes directed ventrally; somites 1-2 with rounded posterolateral processes and 3-5 with short rounded posterolateral processes; somite 1 without setae; somites 2-5 with 1 pair of posterodorsal setae; pleopod buds absent.
Telson ( Figs. 6c View Fig , 8a, b View Fig ): each fork long, gradually curved distally; 1 large and 1 small lateral spine; 1 large dorsal medial spine; posterior margin with 3 pairs of stout spinulate setae.
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