【摘要】 本文报据1974—1979年在峨眉县对白蜡虫花翅跳小蜂的形态,生物学等进行研究观察的结果。发现此蜂有二种色型。认为在苏联远东地区海参威附近,从白蜡虫雄虫中羽化出并定名的Microteryy eve linae Trapitizen,1966及M.tachikawai Sugonjaeb,1976二种是本种的同物异名。 在蛾眉,白蜡虫花翅跳小蜂每年发生6—7代。成虫在4月到11月出现,其数量最高峰在8月底到9月中旬。成熟雌蜂怀卵量为6—30枚。平均每天产卵4枚,卵为跳小蜂型。 幼虫共5龄,在6—7月发育历期约40—45天,幼虫尾端有呼吸圆锥。当幼虫发育到4龄时,宿主死亡。成虫性比为57.3比42.7,雌蜂稍多。 文中还报据药物试验的结果,提出了对白蜡虫花翅跳小蜂的几点防治措施和意见。更多还原

【Abstract】 Microterys ericeri was originally described by Ishii in 1923 from Japan. In 1944, it was reported by Liao and Zeng from Sichuan, China. Recently, in U.S.S.R., Microterys ericeri: M. evelinae Trapitizin 1966 and M. tachikawai Cygonjaev 1976 were reared from male white wax scale (Ericerus pela Chav.). According to our investigation, this encyrtid parasite has two forms of colouration, i.e. "light form" and "dark form". The light form is characterized by having the head, thorax and abdomen all coloured with orange, but suffused with brownish, espicially in the basal portion of abdomen. The dark form is reddish-brown to dark brown in colour on the thorax and abdomen. Although they are easily distinguished by colouration in U.S.S.R., yet all of which were reared from the same host collected in the same locality. Therefore, it is reasonable to conclude that the two new "species" are identical with M. ericeri Ishii.It is found that the adult females of M. ericeri have no fully developed eggs at the time of emergence; they derive their food by puncturing the body of the host and lapping the body fluid. By examining the gravid females it is found that there are 6-30 mature eggs in the ovaries, and an average of 4 eggs are laid per day per female. The egg is deposited usually in the lateral margin of the female scales with the posterior portion of the "stalk" extruded at the integument of the host, which is typical of encyrtid eggs.Five larval instars have been observed; it takes 40-45 days to complete larval development in June and July. Eggs stage lasts two or three days. After the larva hatches its caudal end is retained in the egg shell. The successive exuviae are forced back over the body and become a part of the sheath enveloping the posterior end of the larval body.Death of the host scales usually takes place in the fourth larval instar. After the content of the host body has been exhausted, the pupa is formed within the protective shroud, which is an unbroken moult of fourth stadium, and becomes filled with air. At emergence, the adult cuts a circular opening in the dorsum of the female scale or in the posterior end of the male scale.This encyrtid wasp has generally 6-7 generations per year, at the vicinity of Omei, Sichuan. It appears that two successive generations are overlapping. The overwintering form is the larva of the 6th or 7th generation in the female host.The adult appears from April to November in the field of Omei, being more abundant from late August to the middle of September. The longevity of the adult varies according to sex and food condition. In the laboratory adults supplied with honey live longer than those with water alone. The sex ratio (:) at Omei was 57.3 to 42.7.The preventive measures of the encyrtid parasite are also discussed.更多还原