栎链蚧属分类地位讨论及一新种记述：同翅目：蚧总科：链蚧科

栎链蚧属(Asterodiaspis)是专性寄生于壳斗科(Fagacea)植物的特有类群之一,部分种类的雌成虫寄生于同一寄主的不同部位(茎干、叶片)时,在形态上表现出一定的差异,从而表现为食干型(stem-form)和食叶型(leaf-form)的分化,这种生态二型现象(ecologieal dimorphism)表现出本类群的复杂多样性。本文在新种双型栎链蚧A.biformis sp.nov.形态记述的基础上,认为新栎链蚧属Neoasterodiaspis Borchsenius,     

OBSERVATIONS ON THE LIFE HISTORY AND BIOLOGY OF TIPULA LATERALIS MEIG.

The occurrence of large numbers of larvae of Tipula lateralis Meig. in watercress beds has not hitherto been recorded. Observations on commercial beds and laboratory experimental work show this species to be primarily a saprophyte feeding on rotting submerged cress leaves, though it can develop during the final instar on green cress. Populations as high as 250,000/acre do not affect cress beds adversely.
There are two generations a year and probably a partial third. The life cycle can be completed in 63 days. Mating and oviposition are described, the preferred site for egg laying being on wet soil. The average number of eggs is over 500. The egg and first-instar larva are described for the first time. There are four instars, the anal segment of the first being radically different from that of the remainder. It has been shown that pupation cannot take place under water as previously stated.     

柳天蛾的生活习性观察

柳天蛾(Smerinthus planus Walker)在西安地区发现的寄主植物有:美国白杨(Populuspyramitalis Borth)、加拿大白杨(P.canadensis Moench)、毛白杨(P.tomentosa(Carr.))、钻天杨(P.nigra L.)、旱柳(Salix matsudana Koidz.)、河柳(S.glandulosa Seem.)、龙爪柳(S.matsudana Koidz.var.tortuosa Rehd.)。此外,还为害苹果(Malus pumila Mill.)、桃(Prunus persica Batsch.)等果树。柳天蛾在国内分布于东北、内蒙、河北、河南、江苏、陕西、甘肃、华中、华南等地。