Triops baeticus Korn, 2010

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

Triops baeticus Korn n. sp.

( Fig. 7 )

Note. This species refers to the ‘S.Iberian’ phylogenetic lineage.

Etymology. The specific epithet refers to the Roman province Baetica, named after the river Baetis (modern Guadalquivir). The delta region of that river represents the barycentre of the new species’ geographic distribution, and its diversity hotspot. The epithet is to be treated as a noun in apposition for the purposes of nomenclature.

Material examined. Holotype ♂, Museum of Zoology Dresden ( MTD Crus 3434); Spain, Sevilla, Coto de Doñana National Park, Caño Travieso, P. no. 007, leg. Hugues Lefranc 6 December 2006 . Paratypes: 6 ♂♂, 3 ♀♀, Museum of Zoology Dresden ( MTD Crus 3299–3301, 3430–3433, 3435–3436); same data as holotype . Other material: P.no. 001, 1♂, 1♀; P.no. 002, 4♂♂, 3♀♀; P.no. 005, 4♂♂, 5♀♀; P.no. 008, 4♂♂, 3♀♀; P.no. 010, 2♂♂; P. no. 013, 3♂♂, 1♀♀; P.no. 014, 1♂; P.no. 015, 2♀♀; P.no. 019, 2♀♀; P.no. 022, 5♂♂, 7♀♀; P.no. 025, 1♂, 1♀; P.no. 026, 2♀♀; P.no. 027, 1♂; P.no. 030, 1♂; P.no. 032, 7♂♂, 4♀♀; P.no. 033, 9♂♂, 4♀♀; P.no. 034, 6♂♂, 6♀♀; P.no. 035, 1♀; P.no. 036, 5♂♂, 6♀♀; P.no. 037, 5♂♂, 3♀♀; P. no. 038, 7♂♂, 7♀♀; P.no. 039, 2♂♂, 2♀♀; P.no. 041, 5♀♀; P.no. 042, 1♂, 1♀; P.no. 045, 4♂♂, 3♀♀; P.no. 046, 6♂♂, 4♀♀; P.no. 048, 1♂, 1♀; P.no. 049, 10♂♂, 4♀♀; P. no. 053, 1♀; P.no. 054, 1♀; P.no. 056, 2♂♂, 3♀♀; P.no. 057, 4♂♂; P.no. 058, 3♀♀; P.no. 059, 2♂♂, 1♀♀; P.no. 060, 6♂♂, 9♀♀; P.no. 061, 4♀♀; P.no. 063, 3♂♂, 3♀♀; P. no. 064, 6♂♂, 6♀♀; P.no. 065, 6♂♂, 5♀♀; P.no. 066, 2♀♀; P.no. 069, 7♂♂, 6♀♀; P.no. 076, 1♀; P.no. 080, 2♂♂; P.no. 081, 2♂♂, 2♀♀.

Diagnosis. Adult male: 10th trunk limb: 7–13 ( PM 10.0–11.9) anterior meshwork spines on 3rd endite, 7–15 ( PM 10.4 – 13.5 ) submarginal spines on 4th endite; 2nd trunk limb: proportional endopodite length 72.9–95.5% ( PM 77.3 – 89.6 %; standardized values), proportional maximum length of spines on 5th endite 4.5–7.8% ( PM 5.5 – 7.0%; standardized values); telson length ratio 0.35–0.57 ( PM 0.39–0.53), furcal spine width / telson width 0.11–0.20 ( PM 0.12–0.16), length of telson posterior incision / telson width 0.024 –0.098 ( PM 0.039 –0.079); apodous abdominal segments 5.4–7.7 ( PM 6.2 – 7.2 ). Adult female: 10th trunk limb: 8–15 ( PM 10.0–13.7) anterior meshwork spines on 3rd endite, 8–17 ( PM 10.7 – 14.7 ) submarginal spines on 4th endite; telson length ratio 0.33–0.53 ( PM 0.38–0.48), furcal spine width / telson width 0.11–0.18 ( PM 0.12–0.16), length of telson posterior incision / telson width 0.029 – 0.098 ( PM 0.040 –0.086); apodous abdominal segments 4.8–6.7 ( PM 5.1 – 6.4 ). Resting egg: diameter up to 552 μm ( PM 438–499 μm) .

Description of holotype. Adult male, body rings 32; total number of trunk limbs 55; 10th trunk limb: 11 anterior meshwork spines on 3rd endite, 12 submarginal spines on 4th endite; 2nd trunk limb: length of endopodite 2,558 μm, length of 5th endite 4,178 μm, longest spine on 5th endite 136 μm; length of carapace 22.52 mm, 24 dorsal carina spines, sulcus with 26 spines, length of nuchal organ 0.49 mm; 2nd maxilla well developed, with long terminal setae; telson width 2.73 mm, telson length ratio 0.42, furcal spine size ratio 2.19, posterior marginal spines of medium size, 6 median spines (the 4 anteriormost very small); approximately 7 furcal spines on both sides (not clearly separated from a row of small spines covering posterior margin of ventral side of telson), on one side, main spine not much bigger than first of the following spines; apodous abdominal segments 6.6, supernumerary spines 1.

Range. Guadalquivir and Guadiana River valleys and adjacent areas. Northernmost records are from Tagus River catchment. In south central Portugal recorded from area north of Serra de Monchique and Serra do Caldeirão.

Figures

Fig. 7 Triops baeticus 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