Euscorpiops xui Sun & Zhu, 2010

Di, Zhiyong, He, Yawen, Wu, Yingliang, Cao, Zhijian, Liu, Hui, Jiang, Dahe & Li, Wenxin, 2011, The scorpions of Yunnan (China): updated identification key, new record and redescriptions of Euscorpiops kubani and E. shidian (Arachnida, Scorpiones), ZooKeys 82, pp. 1-33: 16-19

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Euscorpiops xui Sun & Zhu, 2010


Euscorpiops xui Sun & Zhu, 2010  Figures 92110

Euscorpiops xui  Sun and Zhu 2010: 62-67, Figs 1-14, tab. 1.

Type locality.

China, Yunnan Province, Menglian District.

Type material.

Holotype female, China, Yunnan, Menglian District, Lafu Village, 22°08'N, 99°25'E, 15/VII/2009, Dr. Jishan Xu leg(MHBU); 1 female, 1 male, and 1 juvenile male paratypes, same data as holotype (MHBU).

Material examined.

Menglian County, 15/VII/2009, Lixiang Zhang leg, 1 male and 1 female. (BHDC).


(Modified from Sun and Zhu 2010). total length about 54.0-66.0 mm (2 males and 2 females); color dark brownish-red; chela, length/width ratio about 3.5 in females (3.4 and 3.6 in 2 records) and about 4.0 in males (4.0 and 4.1 in 2 records); dentate margin with a slight lobe on movable finger and corresponding notch on fixed finger in both males and females; patella with 19 or 18 external trichobothria (5 eb, 2 esb, 2 em, 4 est, 5 or 6 et , fig. 108; 6 eb, 2 esb, 2 em, 4 est, 5 et, Sun and Zhu 2010: fig. 3), and with 10 ventral trichobothria (4 specimens).

Euscorpiops xui  appears to be closely related to Euscorpiops kubani  , bothcan be distinguished by: male chela length/width ratio, about 4.0 in males and 3.5 in females, whereas it is about 3.1 in males and 2.9 in females in Euscorpiops kubani  ; pedipalp fingers nearly straight (Figs 105, 107), while in Euscorpiops kubani  there is scalloped in males and nearly straight in females ( Kovařík 2004; Sun and Zhu 2010).

Euscorpiops xui  can be distinguished from other related species of the genus Euscorpiops  by the following features: patella of pedipalp with 10 ventral trichobothria, whereas in Euscorpiops shidian  with 11 (rarely 10 and 12 ); chela with a clear sexual dimorphism on length/width ratio: about 4.0 in males and 3.5 in females, compared with 2.7-3.2 in Euscorpiops kubani  , 2.9-3.2 in Euscorpiops validus  , and 2.6-2.8 in Euscorpiops puerensis  ; patella of pedipalp with 18-19 (rarely 18) external trichobothria in Euscorpiops xui  , whereas 18 external trichobothria in Euscorpiops kubani  , Euscorpiops shidian  , Euscorpiops validus  and Euscorpiops yangi  ; the coloration mainly dark brownish-red in Euscorpiops xui  , but yellow brown in Euscorpiops vachoni  .


See Sun and Zhu (2010).


Measurements in table 1. Feature datasets in table 2.


This species is uncommon, collected from moist mixed forest close the villages.


China (Yunnan).