NGHIÊN CỨU NHỆN (ARANEAE) TRONG HANG ĐỘNG Ở VƯỜN QUỐC GIA BA BỂ, TỈNH BẮC KẠN

An assessment of the present status of spiders (Araneae) from caves in Ba Be national Park was undertaken. A total of 31 species from 22 genera and 15 families are known from 3 typical caves in Ba Be national Park, Bac Kan province. Of the species collected, there are 12 species are regarded as true cave spiders (troglobites), while 7 are troglophiles, found both inside and outside caves. The rest of the species (12) are cave accidentals and they are found mainly around the entrances. The distribution of cave spiders discussed in the paper.