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1 December 2002 Tracing phylogenetic relationships in the family Gryllotalpidae
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We propose a hypothesis of relationships in a subset of the mole cricket family (Gryllotalpidae), based on morphology and call type. Living and preserved specimens of six species were examined and a literature analysis conducted, as preliminary steps in a comparative study of this family, known world-wide in tropical and temperate regions. In the literature, 76 species in 5 extant genera are described; we included in our analysis 34 species from four genera for which the most complete morphological data were available. All analyses were rooted by the outgroup method, with Gryllus texensis Cade & Otte as the outgroup and the presence of mole-like digging forelimbs as the synapomorphic character diagnosing the ingroup. Seven other characters in the analysis were restricted to discrete traits for a total of 8 characters in the analysis. Phylogenetic analyses of the complete data set yielded > 15,000 trees to which we applied various consensus analyses by PAUP without high levels of resolution. The Adams method, however, revealed a resolved group of 14 ingroup taxa from four genera, but mostly from the genus Gryllotalpa, that we subjected to re-analysis with PAUP. Two equally parsimonious trees were roughly organized into clades by call type. Our hypothesis supports previous work that has placed the genus Scapteriscus in a separate subfamily and other work that suggested the New Zealand endemic, Triamescaptor aotea Tindale, is more closely related to two Australian species of Gryllotalpa than to Gryllotalpa species as a whole. Additional field studies of songs of this family and addition of characters based on molecular data are important to resolving relationships suggested by our hypothesis.

Peggy S. M. Hill, Cara Hoffart, and Mark Buchheim "Tracing phylogenetic relationships in the family Gryllotalpidae," Journal of Orthoptera Research 11(2), (1 December 2002).[0169:TPRITF]2.0.CO;2
Published: 1 December 2002

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