Eur. J. Entomol. 100 (3): 385-407, 2003 | DOI: 10.14411/eje.2003.060
Homology and morphology in Poduromorpha (Hexapoda, Collembola)
- FRE 2695 CNRS, Laboratoire d'Entomologie, Museum National d'Histoire Naturelle, 45 rue Buffon, F-75005 Paris, France Division of Invertebrate Zoology, American Museum of Natural History, Central Park West at 79th St, New York, NY 10024, USA; e-mail: dhaese@mnhn.fr
The detailed external morphology and general anatomy of the majority of families and subfamilies of Poduromorpha were investigated and compared. This examination was done in relation to the three remaining orders of Collembola: Entomobryomorpha, Symphypleona and Neelipleona. Within Poduromorpha, homologies among the different families and subfamilies are established for general chaetotaxy, and chaeotaxy of head, buccal cone, sensilla of fourth antennal segment, anal valves and tibiotarsus. A consistent and comprehensive nomenclature is proposed for these morphological features unifying those applied in scattered existing studies. Observations on first instars are reported. Comparison of first instars and adult chaetotaxy suggests a possible paedomorphic trend in the evolution of Poduromorpha.
Keywords: Chaetotaxy, Poduromorpha, Entomobryomorpha, Symphypleona, Neelipleona, neoteny, homology, phylogeny, postembryonic development
Received: November 12, 2002; Revised: April 14, 2003; Accepted: April 21, 2003; Prepublished online: September 20, 2004; Published: September 15, 2003 Show citation
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