
TY  - JOUR
A1  - Alarie, Yves 
A1  - Watts, Chris H. S. 
T1  - Larvae of the genus <emph type="2">Antiporus</emph> (Coleoptera : Dytiscidae) and phylogenetic implications
JF  - Invertebrate Systematics
JO  - Invert. Systematics
Y1  - 2004
VL  - 18
IS  - 5
SP  - 523
EP  - 546
KW  - 
UR  - https://doi.org/10.1071/IS03025 
N2  - The larvae of Antiporus blakeii (Clark), A. femoralis (Boheman), A. gilbertii (Clark), A. hollingsworthi Watts, A. jenniferae Watts, A. uncifer Sharp and A. willyamsi Watts are described with an emphasis on chaetotaxy of the head capsule, head appendages, legs, last abdominal segment and urogomphi. A parsimony analysis based on 17 informative larval characteristics was conducted using the program PAUP*. The 11 most parsimonious trees support a monophyletic origin of the genera Antiporus Sharp, Nebrioporus R&#233;gimbart, Scarodytes Gozis, and Stictotarsus Zimmermann. Unambiguous synapomorphies supporting this clade are the presence of natatory setae on the femur, tibia and tarsus and the presence of a very elongate urogomphomere 1. It is postulated that these features evolved as swimming devices. The genus Oreodytes Seidlitz is postulated to represent the sister-taxon of Antiporus + Nebrioporus + Stictotarsus + Scarodytes and this clade is characterised by the absence of the maxillary cardo and insertion of the primary seta MX1 on the maxillary stipes. 
ER  -

