Buthus pyrenaeus Ythier, 2021

Ythier, Eric & Laborieux, Léo, 2022, The genus Buthus Leach, 1815 (Scorpiones: Buthidae) in France with description of a new species from the Sainte-Baume Massif, Faunitaxys (New York, N. Y.) 10 (47), pp. 1-13 : 4

publication ID

https://doi.org/10.57800/faunitaxys-10(47)

persistent identifier

https://treatment.plazi.org/id/03BC8780-FFEE-6F1C-23A2-BE8CD3DAF927

treatment provided by

Felipe

scientific name

Buthus pyrenaeus Ythier, 2021
status

 

Buthus pyrenaeus Ythier, 2021 View in CoL

( Fig. 18, Tab. II-III)

Material examined (7 ex.)

- Pyrenées-Orientales, Cerbère, 1 ♂ holotype, 25/IX/1938 (A. Primot), MHNL (47036301).

- Pyrénées-Orientales, Cerbère, 2 ♀ paratypes, V/1950 (P. Cauchois), MHNL (47023075, 47023076).

- Pyrénées-Orientales, Montauriol, Mas Julia (St Michel), 1 ♀ paratype, 23/VIII/1980 (P. Cauchois), MHNL (47023076).

- Pyrénées-Orientales , Massif des Albères, 2 juvenile ♀ paratypes, ca. 1970-1980 (J.-B. Lacroix), J.-B. Lacroix leg. (No. 111), 1993, EYCP ( EY0244 ) .

Diagnosis. –Scorpion of medium to moderately large size for the genus,with a total lengthof 60-67 mm.General coloration pale yellowtoyellowishorange; carapace with ocular tubercle marked with dark pigments; tergites with dark spots on median carina forming a dark univittate pattern; metasoma and pedipalps yellowish with some carinae slightly infuscate; legs yellowish. Carinae and granulations moderately to strongly marked on carapace and tergites. Metasoma with carinae moderately marked; dorsal and dorsolateral vestigially to weakly subcrenulate on segments II-IV; ventral feebly raised distally on II-III, stronger in female; anal arc composed of two lateral lobes and 10 -12 ventral teeth; intercarinal spaces minutely granular, especially dorsally and more densely onV.Pedipalps with carinae moderately markedand all faces weakly granular on femur and patella; chela with carinae vestigial, smooth; femur with some macrosetae which are mostly concentrated along ventrodistal edge, patella with a few macrosetae scattered all over. Leg tibial spurs strongly developed. Pectines with 31 teeth in male, 26-28 in female. Sexual secondary dimorphism moderate inhabitus withmale more slender and slightlylarger than female (67mm inmale, 60-66 mm in female). Sexual secondary dimorphism conspicuous in pedipalps with chela manus slenderer in male (length/width ratio 1.42, length/depth ratio 1.42) than in female (length/width ratio 1.29- 1.42, length/depth ratio 1.21 -1.30) and slightly wider than patella in male (manus/ patella width ratio 1.04) while wider than patella in female (manus/patella width ratio 1.08 -1.14). Chela fingers with lobe/notch combination obsolete; fingers long, slightly longer in male (movable fingers/manus length ratio 1.91) than in female (1.64 -1.75); fixed finger with 12-13 rows of granules, movable finger with 13- 14 rows of granules. Sexual secondary dimorphism moderate in metasoma (size andshape standard for the genus but longer and heavier in male) and in telsonwithvesicle slightlylessgloboseinmale (deeper thanwide;length/ width ratio1.42, length/depth ratio 1.35, width/depth ratio 0.95) than in female (wider than deep; length/width ratio 1.11-1.17, length/depth ratio 1.18- 1.35, width/depth ratio 1.06 -1.18). Metasomal segment I longer than wide in male (length/width ratio 1.12), wider than long to as wide as long in female (length/ width ratio 0.97- 1.00).

Distribution. – France: Department of Pyrenées-Orientales. As suggested in Ythier (2021),the species is now also confirmed to occur in Spain (Cap de Creus, Gerona Province – Fig. 19). The specific identity of other records from the Provinces of Gerona, Lérida and Barcelona should be regarded as confirmation pending until specimens become available for study.

MHNL

Musee Guimet d'Histoire Naturelle de Lyon

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Scorpiones

Family

Buthidae

Genus

Buthus

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