Suterina microcephalaW. Eugene Hall
Suterina (=Suterella Dybas: 1961) is currently composed of 1 described (Dybas, 1961) and a few undescribed species from North and Central America. Though nanosellines are usually associated with polypore fungi, members of this genus exist in leaf litter or bark at the base of trees.
As with most nanosellines, Suterina can at times be abundant. For example, a Berlese sample consisting of "moss, bark, subcortex on trunk" of a tree from Panama yielded 400+ individuals.
Species can be separated by the variable form of the spermatheca, as well as shape of the mesosternal process.
Suterina is distinguished from other ptiliids by the unusually elongate, somewhat reduced head, and anteriorly narrow pronotum (Dybas, 1961, 1990).
Suterina microcephala occurs in the eastern/southern regions of the United States (Pennsylvania, Rhode Island, Tennessee, Georgia), inhabiting forest floor leaf-litter.
Dybas, H.S. 1961. Two new genera of feather-wing beetles from the eastern United States. Fieldiana. 34: 441-448.
Dybas, H.S. 1990. Ptiliidae. in Soil Biology Guide. Daniel L. Dindal, editor. Wiley-Interscience, New York.
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Hall, W. Eugene. 1997. Suterina. Suterina microcephala. Version 01 January 1997 (under construction). http://tolweb.org/Suterina_microcephala/9655/1997.01.01 in The Tree of Life Web Project, http://tolweb.org/