Abundance and Phenology of Schizomida (Arachnida) from a Primary Upland Forest in Central Amazonia

There were 193 schizomids (hubbardids) collected from the soil (0-7 cm depth) during a 12 month study of a primary upland forest$37.5\pm 16.8\ {\rm ind}/{\rm m}^{2}/\text{month}$near Manaus. They were represented by Surazomus brasiliensis (Kraus 1967) and an underscribed species of a new genus (96%...

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Bibliographic Details
Published in:The Journal of arachnology 1999-01, Vol.27 (1), p.205-210
Main Authors: Adis, J., Reddell, J., Cokendolpher, J., de Morais, J. W.
Format: Article
Language:English
Subjects:
Arthropods
Ecology
Forest canopy
Forest ecology
Forest soils
Montane forests
Soil arthropods
Soil depth
Soil ecology
Young animals
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Summary:There were 193 schizomids (hubbardids) collected from the soil (0-7 cm depth) during a 12 month study of a primary upland forest$37.5\pm 16.8\ {\rm ind}/{\rm m}^{2}/\text{month}$near Manaus. They were represented by Surazomus brasiliensis (Kraus 1967) and an underscribed species of a new genus (96% and 4% of the total catch, respectively). About 68% of all specimens of S. brasiliensis inhabited the organic soil layer (0-3.5 cm depth) where monthly catches of juveniles were positively correlated with soil temperature. Females were twice as abundant as males. The lack of a distinct reproductive period and the presence of juveniles (in particular the first nymphal instar) and adults (both sexes) throughout the year indicate a plurivoltine mode of life. Few specimens were caught on the soil surface, and none were on tree trunks or in the canopy. Abundance of S. brasiliensis is compared to that of the Palpigradi (microwhip scorpions) and Thelyphonida (vinegaroons) from the same study site.
ISSN:0161-8202
1937-2396