For all you ant taxonomy fans, from the online journal Zootaxa:
Longino, J. T. and S. Cover. (2004) A revision of the Aphaenogaster phalangium complex (Hymenoptera: Formicidae: Myrmicinae). Zootaxa 655: 1-12.
These Aphaenogaster are beautiful, gracile ants. I encountered the phalangium complex for the first time in Guatemala last year. Longino and Cover have cleaned up the taxonony and after extensive synonymy we are left with two species, araneioides and phalangium. Here is A. araneioides:
(photo from www.myrmecos.net)