中国内蒙古贺兰山地区拟埃蝗属二新种(直翅目,剑角蝗科)

记述采自内蒙古贺兰山地区拟埃蝗属Pseudoeocyllina 2新种,即拟短翅拟埃蝗Pseudoeocyllina brevipennisoides Zhang,Zheng et Yang,sp. nov.及贺兰山拟埃蝗Pseudoeocyllina helanshanensis Zheng,Zeng et Zhang,sp. nov.,附有拟埃蝗属分种检索表.模式标本保存于陕西师范大学动物研究所昆虫标本室。

TWO NEW SPECIES OF THE GENUS PSEUDOEOCYLLINA LIANG ETJIA (ORTHOPTERA, ACRIDOIDEA) FROM HELAN MOUNTAIN,CHINA

This paper reports two new species of the genus Pseudoeocyllina from Helan Mountain; Pseudoeocyllina brevipennisoides Zhang, Zheng et Yang, sp. nov. and Pseudoeocyllina helanshanensis Zheng, Zeng et Zhang, sp. nov. Type specimens are deposited in the Institute of Zoology, Shaanxi Normal University. Pseudoeocyllina brevipennisoides Zhang, Zheng et Yang, sp. nov. (Figs 1-4) This new species is allied to Pseudoeocyllina longicorna Liang et Jia, 1992 and Pseudoeocyllina brevipennis Sun et Zheng, 2008 but differs from both in: 1) vertical diameter of eye 1.6 times of subocular furrow; 2) length of prozona 1.3 times of metazona; 3) width of medial area 1.5 times of cubital area. The new species differs from the former by the elytra very short, only reaching middle of hind femur. The new species differs from the latter by the lateral margins of frontal ridge straight. ♀ Length of body 22.0-23.0 mm; length of pronotum 4.0-4.5 mm; length of elytra 10.0-12.0 mm; length of hind femur 13.0-13.5 mm. Holotype ♀, Inner Mongolia, Helan Mountain (38°4′N, 105°6′E), 28 July 2010, collected by ZENG Hui-Hua and ZHANG Hong-Li. Etymology. The specific name is derived from the Latin "brev", "penn" and "oides". Pseudoeocyllina helanshanensis Zheng, Zeng et Zhang, sp. nov. (Figs 5-9) This new species is allied to Pseudoeocyllina xinjiangensis Zheng et Yang, 2006, but differs in: 1) vertical diameter of eye 1.53 times of subocular furrow; 2) length of middle segment of antenna 2 times its width; 3) width of medial area 1.2 times cubital area; 4) only precostal area with intercalary vein; 5) back of head and pronotum red brown; 6) without a white and in costal area; 7) hind tibia red brown. ♀ Length of body 22.0 mm; length of pronotum 4.0 mm; length of elytra 18.0 mm; length of hind femur 13.5 mm. Holotype ♀, Inner Mongolia, Helan Mountain (38°6′N, 105°6′E), 12 Sep. 2010, collected by ZENG Hui-Hua and ZHANG Hong-Li. Etymology. This specific name is derived from the type locality "helanshan".