莫干近管蛛主要生物学特性观察

OBSERVATIONS ON THE BIOLOGY OF ANYPHAENA MOGAN (ARANEIDA: ANYPHAENIDAE) IN CHINA

本文记述了1986—1989年在浙江省莫干山,对莫干近管蛛主要生物学特性的观察结果。莫干近管蛛多分布于海拔240—700米范围内,在450—550米之间密度最高,平均每平方米为3.33只。亚成蛛和成蛛都常在苦竹和淡竹叶上营巢,但两者巢形不同。6月初堆蛛触胰器相继出现,间隔一周雌蛛生殖厣成熟,繁殖期开始。在野外,雌雄性比为7.08:1。卵囊0.52×0.52厘米,每一卵囊平均卵粒数为64.37粒,大小为0.34×0.34厘米。奠干近管蛛主要捕食竹织叶野螟、竹笋夜蛾和毛笋泉蝇,为竹园害虫重要的捕食性天敌。

Records on biology of Anypkaena mogan were made in Mogan Mount, Zhejiang Province. 1986-1989. Distibution of this spidcr is within ranges from 240 tu 700 metres in altitude and highest (iens韙y was found from 450 to 550 meters in altitude with 3.33 spiders individuals per square meters in everage. Neats between adult and suba-dult are different. Both nests is buit on bamboo leaves (Pleiobastus amarus, Lophatherum gracile). The male palpal organ begin maturiry on june, then the female epigynum matu-rity a week later. The sex ratio of femalermale U .7.08:1. Each cgg sac size 0.52×0.53cm Egg sac contains 64.37 eggs. One egg size 0.34 × 0.34mm Anyphaena mogen prey upon Algedonia coclesalis (Lepidoptera, Pyralidae), Oligia vulgaris (Lepidoptera, Noctuidae), Pegomyis phyllostachys (Diptera, Anthomyiidae), and is taken to be the important nature enemy of bamboo pests.