Oiclus nanus Teruel et Chazal, 2010

Teruel, Rolando & Chazal, Léonard, 2010, On the adult female of Oiclus nanus Teruel et Chazal, 2010 (Scorpiones: Scorpionidae: Diplocentrinae), Euscorpius 106 (106), pp. 1-6 : 1-6

publication ID	https://doi.org/ 10.18590/euscorpius.2010.vol2010.iss106.1
persistent identifier	https://treatment.plazi.org/id/03EC5525-DF6D-3869-C4E8-FC2B9C41F9B0
treatment provided by	Felipe
scientific name	Oiclus nanus Teruel et Chazal, 2010
status

Treatment

Oiclus nanus Teruel et Chazal, 2010 View in CoL

Figures 1–4 View Figure 1 View Figure 2 View Figure 3 View Figure 4 ; Table 1

Oiclus nanus Teruel & Chazal, 2010: 1–9 View in CoL , figs 1–5, tab. 1.

Diagnosis (emended): species of small size (males 20–23 mm, female 22 mm) for the genus. Body light brown, diffusely patterned with dark brown; legs yellowish; pedipalps and metasoma with carinae and fingers faintly infuscate. Entire body conspicuously hirsute in males (especially on pedipalps, mesosoma and metasoma), less densely hirsute in females and juveniles. Carapace polished in both sexes, in males with very finely and densely granulose areas symmetrically scattered, in females entirely smooth; tergites in males finely and densely granulose, in females with very subtle vestiges of coarse granules scattered over posterior region. Punctate tegument restricted to pedipalp patella and chela in adults, absent in juveniles. Pedipalp chela robust and with dorsoexternal surfaces granulose and strongly reticulate in males, slender and with dorsoexternal surfaces smooth in females. Metasoma moderately to weakly carinated in dorsal and lateral surfaces, intercarinal tegument smooth and polished. Pectines with fulcra variable from moderately well developed to essentially absent; tooth count 7/ 7 in males, 6/ 6 in females. Modal tarsal spine formula 3/3: 4/4: 5/5: 5/5.

Adult Female: it differs from the holotype and paratype males by the following characters: (1) genital operculum completely fused by a membranous connection ( Fig. 2d View Figure 2 ); (2) genital papillae absent ( Fig. 2d View Figure 2 ); (3) pectines comparatively smaller, with 6/6 teeth ( Fig. 2d View Figure 2 ); (4) pedipalp chela much more slender and with longer fingers ( Fig. 2c View Figure 2 ; Tab. 1); (5) metasoma less densely hirsute, with all segments comparatively shorter and wider, and with a much more enlarged telson ( Figs. 1a– b View Figure 1 , 2e–j View Figure 2 , Tab. 1); (6) carapace and tergites polished, at most with subtle vestiges of large granules ( Figs. 2a–b View Figure 2 ); (7) mesosoma comparatively larger and wider ( Figs. 1a– b View Figure 1 , 2b View Figure 2 , Tab. 1).

Euscorpius — 2010, No. 106

New Records: Guadeloupe, Grande-Terre , Saint François, Pointe des Châteaux (type locality); under rock in coastal forest, 16 February 2010, leg. L. Chazal, 1♀ topotype (RTO: Sco-0412), 5 juvenile topotypes. AnseBertrand (new record), under rock in coastal forest, 18 May 2010, leg. L. Chazal, 1 ♀ (kept alive in captivity by L. Chazal) .

Remarks: the adult females now available allow improving the comparison of O. nanus to its morphologically closest relative Oiclus questeli Teruel, 2008 , from Saint Barthélemy. Apart from adult male differences, already discussed in the original description (Teruel & Chazal, 2010), adult females of O. nanus can be easily separated by having a greatly reduced granulation on tergites (essentially absent on carapace), presence of pectinal fulcra, weaker metasomal carinae (especially on segments III–IV) and metasomal segment III as long as wide. As opposite, adult females of O. questeli are characterized by having carapace and tergites moderately covered by coarse granules, absence of pectinal fulcra, somewhat stronger metasomal carinae, and metasomal segment III wider than long ( Teruel, 2008).