Nototanoides, Sieg & Heard, 1985

Morales-Núñez, Andrés G. & Ramos-Tafur, Gabriel E., 2023, Nototanoides oliveri, a new sponge-dwelling nototanaid tanaidacean (Crustacea Tanaidomorpha, Tanaidacea) from eastern Gulf of Mexico, with an illustrated taxonomic key, and the first record of harpacticoid copepods within the marsupium of ovigerous female tanaids, Zootaxa 5346 (3), pp. 242-270 : 267

Key to the known species (males) of Nototanoides

1. Pleonites with a lateral row of more than 11 simple setae ( Fig. 16M–N ). .......................................... 2

- Pleonites with a lateral row of less than 11 simple setae ( Fig. 16O–P )........................................... 3

2. Cheliped basis lacking mid-ventral process ( Fig. 16Q ). Cheliped merus with round ventral process ( Fig. 16Q ).................................................................................................... N. polytrichus

- Cheliped basis with mid-ventral process ( Fig. 16R ). Cheliped merus lacking round ventral process ( Fig. 17R )................................................................................................. N. oliveri sp. nov.

3. Cheliped carpus with mid-ventral process ( Fig. 16S ). Chela with fixed finger bearing a triangular claw ( Fig. 16S )................................................................................................... N. ohtsukai

- Cheliped carpus without mid-ventral process ( Fig. 16T ). Chela with fixed finger bearing a rounded tooth ( Fig. 16T )................................................................................................ N. trifurcatus

Figures

FIGURE 16. Female habitus, dorsal view (A–D): A, Nototanoides polytrichus; B, N. oliveri sp. nov.; C, N. trifurcatus; D, N. ohtsukai. Female lacinia mobilis (E-H): E, Nototanoides polytrichus; F, N. oliveri sp. nov.; G, N. trifurcatus; H, N. ohtsukai. Maxilliped palp article-2, inner view (I–J): I, Nototanoides polytrichus; J, N. oliveri sp. nov. Female chelipeds (K–L): K, Nototanoides ohtsukai; L, N. trifurcatus. Male habitus, dorsal view (M–P): M, Nototanoides polytrichus; N, N. oliveri sp. nov.; O, N. trifurcatus; P, N. ohtsukai. Male chelipeds (Q–T): Q, Nototanoides polytrichus; R, N. oliveri sp. nov.; S, N. ohtsukai, T, N. trifurcatus. Figures modified from: A, E, I, K, M, Q, Guţu 2023; B, F, J, N, R, Morales-Núñez & Ramos-Tafur (this study); C, G, L, O, T, Sieg & Heard 1985; D, K, P, S, Kakui & Yamasaki 2013. Not to scale.

FIGURE 17. Digital images of Nototanoides oliveri sp. nov. paratype ovigerous female: A–B, multifurcate spiniform seta on maxilliped palp article-2; C, enlargement of cheliped dactylus showing the integument covert by scales; D, enlargement of the propodus tip of the peropod-1 showing part of the crown of lanceolate setae. Digital images of Nototanoides oliveri sp. nov. paratype male: E, right cheliped, outer view; F, right cheliped, inner view; G, left cheliped, inner view. Black arrows shown the presence of a mid-ventral apophysis/protuberance on the male cheliped basis. Scale bars = 0.02 mm for A, C;0.01 mm for B, D; and 0.2 mm for E–G. Photos by A.G. Morales-Núñez.