|Title||Genetic variation and systematics of four taxa of Neotropical walking sticks (Phasmatodea: Phasmatidae)|
|Publication Type||Journal Article|
|Year of Publication||1988|
|Authors||Van Den Bussche, RA, Willig, MR, Chesser, RK, Waide, RB|
|Journal||Proceedings of the Entomological Society of Washington|
Electrophoretically detectable genetic variation for six isozymes encoded by seven loci was analyzed in four taxa walking sticks (Phasmatidae) that occur in neotropical rainforests in eastern Puerto Rico. No phylogenetic analysis previously has been conducted on any phasmatid. All seven loci exhibited variation among Diapherodes achalus, Lamponius portoricensis, Pseudobacteria yersiniana, and an unnamed taxon (species X). Coefficients of geneti distance between these four taxa ranged from 0.349 to 0.571. The UPGMA of Rogers' genetic distance indicated considerable genic dissimilarity among taxa (two taxa which were least dissimilar connected at a value of 0.350). The four taxa represent a holophyletic group for which an outgroup was not analyzed, this situation, in conjuction with the shor internode distance in the Fitch-Margoliash analysis, provides only limited resolution of the phylogenetic associations among the four taxa.