青海省蝗虫四新种(直翅目:蝗总科)

Four New Species of Grasshoppers (Orthoptera: Acridoidea) from Qinghai Province

记述采自青海省蝗总科昆虫 4新种 ,即黑纹痂蝗 Bryodema nigristria sp.n.、西宁雏蝗 Chorthippus xiningensissp. n.、海北雏蝗 Chorthippus haibeiensis sp. n.及黄胫拟槌角蝗 Gomphoceroidesflavutibia sp.n.。模式标本保存于陕西师范大学动物研究所。

In the present paper, four new species of grasshoppers from Qinghai province are described. Type specimens are deposited in the Institute of Zoology, Shaanxi Normal University. All the measurements are in millimetres. 1. Bryodema nigristria, sp. nov. (Figs.1～5) This new species is allied to B. hyalinala Zheng et Zhang, 1981, but differs in: 1) length of pronotal matazona is 2.8 times the prozona in male, and 2 times in female; 2) in female width of interspace of mesosternal lobes is 4 times the length; 3) base of hind wing hyaline, with a black stripe in the middle; 4) hind margin of subgenital plate of female angulate protruding. Length of body: ♂26～28,♀30. Length of pronotum: ♂7～9,♀9. Length of elytra: ♂35～36,♀14. Length of hind femur: ♂13～14, ♀14. Holotype ♂, paratypes 1♂, 1♀, Qinghai: Yushu (Batang), 3860 m, 96°5′E, 32°3′N, Ⅶ 1997. 2. Chorthippus xiningensis, sp. nov. (Figs.6～8) This new species is related to Ch. huchengensis Xia et Jin, 1982, but differs in: 1) foveola length three times its width; 2) length of middle segments of antenna is 2.5times its width; 3) without intercalary vein in precostal area; 4) width of median area is1.25 times the width of cubital area; 5) elytra length is 6 times its width; 6) upper kneelobe brown. Length of body: ♂14.5～15. Length of pronotum: ♂3～3.5. Length of elytra: ♂12～13. Length of hind femur: ♂8～8.5. Holotype ♂, paratype 1♂, Qinghai: Xining, 100°8′E, 36°3′N, 04 Ⅹ 1999, collected by Zeng Yang. 3. Chorthippus haibeiensis, sp. nov. (Figs.9～11) This new species is related to Ch. albonemus Cheng et Tu and Chorthippu dubius (Zub.). It differs from both by the posterior sulcus before the middle of pronotum. It differs from the former by the lateral keels of pronotum not white and costal area without a white longitudinal stripe. It differs from the latter by the median area with a series black spots. Length of body: ♀15.5～16. Length of pronotum: ♀3～3.5. Length of elytra: ♀8～8.1. Length of hind femur: ♀8.7～9. Holotype ♀, paratypes 2♀♀, Qinghai: Qilian, 3400 m, 100°1′E, 38°07′N, 07 Ⅶ 1999, collected by Zeng Yang. 4. Gomphoceroides flavutibia, sp. nov. (Figs.12～15) This new species is allied to G. xinjiangensis Zheng et al, 1992, but differs in: 1) foveola length 3.5 times its width; 2) width of costal area is 2.5 times the subcostal area; 3) width of median area is 8 times the cubital area; 4) elytra reaching three fourths of hind femur; 5) hind tibia yellow; 6) ♂, terminal tergite of abdomen and anal plate yellow brown. Length of body: ♂13.5～14. Length of pronotum: ♂2～2.5. Length of elytra: ♂8.5～9. Length of hind femur: ♂8～8.5. Holotype ♂, paratype 1♂, Qinghai: Menyuan, 3340m, 100°8′E, 36°7′N, 10 Ⅶ 1997, collected by Chen Zhen ning.