Dircksen et al. (1988), Dircksen et al. (1987), Fingerman (1985)†, Fingerman & Fingerman (1977)†, Fingerman & Fingerman (1978)†, Fingerman & Fingerman (1979)†, Krebs (1976)†, Krebs et al. (1974)†, Nagabhushanam et al. (1979)†, Nässel et al. (1991)†, Nimmo et al. (1971), Powers (1977)†, Thurman (1979)
Entries marked with † represent indirect references to location through citation. Entries marked with ‡ represent potential inhabitants inferred from species ranges.