Tortanus (Atortus) lukmani - Fiche d'espèce - Copépodes planctoniques marins

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Tortanus (Atortus) lukmani Mulyadi, Nishida & Ohtsuka, 2017 (M)

Abréviations ou symboles

Ref.:

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Liste des auteurs analysés )

Mulyadi, Nishida & Ohtsuka, 2017 (p. 95, Descr. figs. M, Rem.)

Espèce Tortanus (Atortus) lukmani - Planche 1 de figures morphologiques

Issued from: Mulyadi, S. Nishida & S. Ohtsuka in Crustaceana, 2017, 90 (1). [p.96, Fig.10].
Male (from 1°23.491'N, 125°06.460'E): a, habitus (dorsal); b, urosome (dorsal); c, right A1 (number of ancestral segment indicated by Roman numerals); d, right P5: e, left P5.

Nota:
- Prosome about 2.9 times as long as urosome.
- posterior corners of prosome produced into asymmetrical, rounded lobes, left side wider than right.
Genitalsomite slightly asymmetrical, left margin more convex than right, and with process distally.
- Urosomite 2 right lateral side with small posterior process with distal setule.
- Caudal rami asymmetrical, right ramus slightly longer than left.
- Right A1 serrate ridge of segment XX produced proximally to mid-length of segment XIX; anteroproximal process on segment XIX acutely triangular, exyending to proximal 1/3 of segmenr; fused segments XXI-XXIII produced into 2 processes, proximal one produced into short spine-like process, distal one produced into long spine-like process extending near distal end of fused segments XXIV-XXVIII.
- P5 : Right leg with coxa broad without ornament; distal half of basis much broadened and curved medially bearing semi-ytiangular medial process with proximal and terminal setules, proximolateral margin of segment armed with finger-like process, posterior surface with spine near base of exopod; exopod stout, curved medially at proximal 1/3, with 2 medial setules and subdistolateral setule. Left leg with coxa smooth; basis elongate0 with proximomedial broad-based digitiform process directed sub-distally with subterminal setile, and pillow-like process on distal half of medial margin; exopodal segment 1 curved medially with medial papilla with distal setule; ; exopodal segment 2 curved medially with medial setule near midpoint, tip of segment produced into rounded process with 2 setae.

NZ:

Carte de distribution de Tortanus (Atortus) lukmani par zones géographiques

Loc:

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Glossaire géographique )

Indonesia (off Tanjung Merah, Sulawesi Is.)

Type locality: 1°23.491' N, 125°06.460' E.

Lg.:

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Références des auteurs concernant les dimensions )

(1314) M: 1,79-1,88; {M: 1,79-1,88}

Rem.:

For Mulyadi & al. (2017, p.97), Tortanus (A.) lukmani belongs to the brevipes species complex, but can not be assigned to either the rubidus or the longipes species group, since the posterior end of its prosome is asymmetrical, with the left side longer, the medial margin of the basis of the male left P5 has a series of processes, and the basis of the male right P5 is broad and semicircular (as in the longipes group), but the proximal end of the denticulate ridge of segment XX of the right A1 is not strongly retroflexed (unlike in the longipes species group). Nevertheless, T. (A.) lukmani is distinguished from the other species of the species complex by the massive basis with characteristic proximolateral processes on the right P5 and the shape of the medial processes on the basis of the left P5.

Dernière mise à jour : 05/04/2018