Triops gadensis Korn

Hundsdoerfer, Michael Korn Andy J. Green Margarida Machado Juan García-de-Lomas Margarida Cristo Luís Cancela da Fonseca Dagmar Frisch José L. Pérez-Bote Anna K., 2010, Phylogeny, molecular ecology and taxonomy of southern Iberian lineages of Triops mauritanicus (Crustacea: Notostraca), Organisms Diversity & Evolution (New York, N. Y.) 10 (5), pp. 409-440 : 432-433

Triops gadensis Korn & García-de-Lomas n. sp.

( Fig. 8 )

Note. This species refers to the ‘Cadiz’ phylogenetic lineage.

Etymology. The specific epithet refers to Gades, the Roman name for the town of Cádiz. The epithet is to be treated as adjectival for the purposes of nomenclature.

Material examined. Holotype ♂, Museum of Zoology Dresden ( MTD Crus 3089); Spain, Cádiz, Barbate, P. no. 083, leg. Juan García-de-Lomas 3 April 2006 . Paratypes: 3 ♂♂, 2 ♀♀, Museum of Zoology Dresden ( MTD Crus 3060–3061, 3086–3088); same data as holotype . Other material: P.no. 082, 6♂♂, 14♀♀; P.no. 084, 1♂, 4♀♀; P. no. 085, 2♂♂, 2♀♀; P.no. 086, 1♂; P.no. 087, 5♂♂, 8♀♀; P.no. 090, 1♂; P.no. 091, 3♀♀.

Diagnosis. Adult male: 10th trunk limb: 9–11 ( PM 9.8 – 10.2 ) anterior meshwork spines on 3rd endite, 9–13 ( PM 10.2 – 12.3 ) submarginal spines on 4th endite; 2nd trunk limb: proportional endopodite length 73.3–85.1% ( PM 79.4 – 84.7 %; standardized values), proportional maximum length of spines on 5th endite 4.3–6.1% ( PM 4.9 – 5.5 %; standardized values); telson length ratio 0.40–0.52 ( PM 0.42–0.47), furcal spine width / telson width 0.10–0.19 ( PM 0.13–0.17), length of telson posterior incision / telson width 0.034 –0.099 ( PM 0.055 –0.068); apodous abdominal segments 5.7–7.2 ( PM 6.2 – 6.8 ). Adult female: 10th trunk limb: 9–14 ( PM 10.8 – 12.7 ) anterior meshwork spines on 3rd endite, 8–16 ( PM 10.3 – 13.6 ) submarginal spines on 4th endite; telson length ratio 0.33–0.53 ( PM 0.39–0.46), furcal spine width / telson width 0.12–0.18 ( PM 0.12–0.15), length of telson posterior incision / telson width 0.033 – 0.082 ( PM 0.058 –0.064); apodous abdominal segments 4.4–6.5 ( PM 5.1 – 5.7 ). Resting egg: diameter up to 479 μm ( PM 448 μm) .

Description of holotype. Adult male, body rings 31; total number of trunk limbs 50; 10th trunk limb: 11 anterior meshwork spines on 3rd endite, 11 submarginal spines on 4th endite; 2nd trunk limb: length of endopodite 2,674 μm, length of 5th endite 3,641 μm, longest spine on 5th endite 131 μm; length of carapace 19.05 mm, 48 dorsal carina spines, sulcus with 39 spines, length of nuchal organ 0.51 mm; 2nd maxilla well developed, with long terminal setae; telson width 2.37 mm, telson length ratio 0.46, furcal spine size ratio 2.07, posterior marginal spines long, 2 median spines; 3+4 furcal spines, main spines considerably bigger than following spines; apodous abdominal segments 6.3.

Range. Western lowlands of Cádiz province, between El Puerto de Santa Maria and Tarifa.

Figures

Fig. 8 Triops gadensis n. sp., adult male (holotype). a Telson, dorsal view. b Distal part of 2nd trunk limb. c Proximal region of 5th endite of 2nd trunk limb