Abstract
Radioactive Alabama argillacea (Huebner) eggs and first instars were placed in an east Texas cotton field during 1982. The following arthropods showed evidence of predation on eggs: the insects Solenopsis invicta Buren, Orius tristicolor (White), Geocoris punctipes (Say), Tropiconabis capsiformis (Germar), Ceratocapsus sp., Pseudatomoscelis seriatus (Reuter), and a coccinellid larva; and the spiders Peucetia viridans (Hentz), Chiracanthium inclusum (Hentz), Aysha gracilis (Hentz), and Neoscona arabesca (Walckenaer). Predators of 1st instars included the insects S. invicta, G. punctipes, G. uliginosus (Say); and the spiders Misumenops sp., Tetragnatha laboriosa Hentz, A. gracilis. P. viridans, C. inclusum. Hentzia palmarum (Hentz); and an erigonid. Means for egg and small larval predation, after 48 h of exposure, were 88.7 and 88.4%, respectively. Predator efficiency values were calculated for all radioactive species captured and reported as number of eggs or larvae consumed per 24 h. The number of eggs consumed/predator/day, ranged from 7.29 for Ceratocapsus sp. to 0.017 for S. invicta , and the number of larvae from 4.8 for A. gracilis to 0.41 for P. viridans .
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