中文摘要：

沙漠石蜂Megachile（Chalicodoma）desertorum Morawitz的成虫活动期与西鄂尔多斯地区多种植物的开花物候相适应，是多种荒漠植物（其中包括一些珍稀濒危植物）的重要传粉昆虫。该文报道了沙漠石蜂除成虫外各虫态的形态特征、生活史及幼虫和成虫的行为等生物学特性。该蜂在西鄂尔多斯地区1年发生1代。越冬成虫翌年4月中旬开始出巢活动；雄蜂早于雌蜂9d左右出现，完成交尾后数日死亡，雄蜂出巢后寿命20d左右，雌蜂约35d。卵期约12d。幼虫期85d左右，老熟幼虫多数在6月中旬结茧，7月末开始化蛹，蛹期约18d。成蜂于8月中旬陆续羽化，羽化后的成虫很快进入滞育状态，并在茧内越冬；滞育期长达235d。

英文摘要：

The active period of Megachile （ Chalicodorna ） desertorum Morawitz is coherent with the blooming of many plants in West Erdos Region, and it is a very important pollinator for hungrinaness plants （including some plants in danger）. In this paper we report morpha not including adult, life history and biological characteristics of M. （Chalicodoma） desertoram. This kind of bee takes place one generation in one year in West Erdos Region. It hibernates in state of diapause adult, and start appears in mid April of the next year. The male appears 9 days earlier than the female, dies soon after mating, its life-span is about 20 days, the female＇ s life-span about 35 days. The eggstagc is about 12 days, larva begin to callus in mid June, in the end of July starts to pupate. The larval stage is about 85days, and pupal period is about 18 days. The adult＇s eclosion in mid August, and enter diapause state. Adult hibmate in the cell, and the diapause stage is as long as about 235 days.