陕西太白山大蓟马属二新种(缨翅目:蓟马科)

Two New Species of the Genus Megalurothrips (Thysanoptera:Thripidae) from Shaanxi, China

记述中国大蓟马属Ｍｅｇａｌｕｒｏｔｈｒｉｐｓ２新种：等鬃大蓟马Ｍｅｇａｌｕｒｏｔｈｒｉｐｓ ｅｑｕａｌｅ－ｔａｅ ｓｐ． ｎｏｖ． 和嵩坪大蓟马Ｍｅｇａｌｕｒｏｔｈｒｉｐｓ ｈａｏｐｉｎｇｅｎｓｉｓ， ｓｐ．ｎｏｖ．，

The present paper deals with two new species of the genus Megalurothrips from Shaanxi, China. The type specimens are deposited in the Entomological Museum of Northwestern Agricultural University. 1. Megalurothrips equaletae, sp. nov.(Fig.1) This new species is similar to M. distalis (Karny) .But it can be easily distinguished from the latter by the following character: the postocular setae arranged in a row; postmarginal setae in the pronotum are in four pairs and S 1 is two times longer than S 2, S 3 and S 4; the postmarginal setae are nearly the same length on abdominal tergum Ⅸ; the arangement of setae on veins of forewing is different. Holotype♀,paratypes 2♀♀,Taibai Mountain, Shaanxi, China, 14-Ⅷ-1997, collected from grass by Chao Pingan. 2. Megalurothrips haopingensis, sp. nov.(Fig.2) This new species resembles to M. distalis (Karny) and M. equaletae, but differs from them in body colour. The new species is yellowish to greyish brown;the basal 1/4 of antennal segments IV and V are yellowish; the postocular setae I are not arranged in a row; the postmarginal setae in the pronotum are in four pairs and S 1 is two times longer than the others; the postmargin of abdominal terga lack microtrichia on segment Ⅷ and S 1 is clearly shorter than S 2, S 3 on the tergum IX; forewing color is similar; the arangement of setae on veins of forewing is different. Holotype♀,paratypes 1♀,Haoping, Shaanxi, China, 14-Ⅷ-1997, collected from grass by Chao Pingan.