Acta Zoologica Cracoviensia, 17() 1972
Morpho-systematic studies on Collembola. III. Body chaetotaxy in the first instars of several genera of the Entomobryomorpha
Abstract:
A description of the chaetotaxy of body in the first instars of Isotomurus palustris (Müll.), Isotoma viridis Bourl., Tomocerus (Pogonognathellus) flavescens (Tullb.), Orchesella flavescens Bourl., O. bifasciata Nic., Heteromurus nitidus Wankel, Entomobryoides myrrnecophila (Reut.), Willowsia buski (Lubb.), Lepidocyrtus curvicollis Bourl., Pseudosinella alba (Pack.) and Cyphoderus albinus Nic. is given. An attempt has been made to deduce, the chaetotaxy of all the tergites from an initial pattern composed of 3 rows of 7. 7 and 6 setae, i. e., the pattern characteristic of most members of the Poduromorpha, and to homologize the setae of the genera under study with those of the Poduromorpha. A close homology of the setae has been established in the Entomobryidae s. l., which indicates the monophyletism of this group, and a close affinity has been demonstrated between the genus Cyphoderus Nic. and the Entomobryidae s. l.
