. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Plate 2. (Top) Neoantistea agilis (Keyserling) female from Massachusetts. (From Ektachrome by H. W. Levi.) (Bottom) Egg case produced by an N. agilis from Indiana (the space between vertical lines repre- sents 1 mm). turbed these spiders run quickly to the edge of the web and often take refuge in crevices of the soil, moss, or debris. So far as we know, no spiders of the genera Antistea or Hahnia have been seen on or taken from webs, although collecting data for many specimens do not mention habitat. Specimens of thes
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Plate 2. (Top) Neoantistea agilis (Keyserling) female from Massachusetts. (From Ektachrome by H. W. Levi.) (Bottom) Egg case produced by an N. agilis from Indiana (the space between vertical lines repre- sents 1 mm). turbed these spiders run quickly to the edge of the web and often take refuge in crevices of the soil, moss, or debris. So far as we know, no spiders of the genera Antistea or Hahnia have been seen on or taken from webs, although collecting data for many specimens do not mention habitat. Specimens of these two genera have been found under stones and wood, in leaves and litter, and in pitfall traps, as were many Neoantistea. Berry (1970) found Hahnia primarily in forest leaf litter. It may be that Antistea and Hahnia build small webs that have escaped notice. On the other hand, they may hunt small in- sects which are likely to be abundant where they have been found, and may not need webs. The remains of prey have not been ob- served in the webs of N. agilis or N. riparia. Adult and subadult N. agilis are able to eat Tribolium larvae up to 7 mm in length. Upon hatching, N. agilis are less than one mm long and probably feed on Collembola and other small insects. The egg sacs of Hahniidae are circular mounds covered by white silk (Plate 2). In the laboratory an N. agilis produced an egg sac which had a diameter of 4 mm and a height of 2 mm. After sixteen days, seven spiderlings, ranging in length from to mm, emerged from this sac. No un- hatehed eggs remained. Collecting data for H. cinerea, N. agilis, N. riparia, and N. magna suggest that most reproduction occurs from late March to late May and again from mid-August to late September. Two peaks in adult and juve- nile population are indicated, a smaller one during the latter two-thirds of April and a larger one from mid-August to mid- September. Most N. agilis immatures are taken during May and August while most N. magna
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