The external morphology of the pseudoscorpion Roncus andreinii
Article first published online: 23 MAR 2009
Journal of Zoology
Volume 223, Issue 1, pages 27–48, January 1991
How to Cite
Gardini, G. and Benelli, R. (1991), The external morphology of the pseudoscorpion Roncus andreinii. Journal of Zoology, 223: 27–48. doi: 10.1111/j.1469-7998.1991.tb04747.x
- Issue published online: 23 MAR 2009
- Article first published online: 23 MAR 2009
- Accepted 16 November 1989
The external morphology of the four postembryonic instars of Roncus andreinii (di Caporiacco, 1925) is described and compared with one of the related R. lubricus L. Koch, 1873 (Gabbutt & Vachon, 1967), with particular emphasis on disposition of the chelal trichobothria in relation to growth.
From the evaluation of characters it is concluded that a few morphometric and chaetotaxic characters (i.e. the length, ratio and shape of pedipalpal articles, the ratio of fingers/pedipalpal hand, the chaetotaxy of sternites II and III) represent good specific discriminants, while the relative position of trichobothria along the chelal axis is nearly the same in both species.
The localization of the growing and non-growing regions along the pedipalpal fingers may be of practical use in the search for new taxonomic characters.