Le genre Therea Billberg, 1820: position phylogénétique, nouvelles espèces, répartition, valence écologique (Dictyoptera, Blattaria, Polyphaginae)

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Abstract
The genus Therea Billberg, 1820 is redefined as a monophyletic taxon belonging to the group Ergaula + Eucorydia + Therea + Cryptocercus in the subfamily Polyphaginae Kirby, 1904. Three new species, T. regularis, T. defranceschii, and T. hyperguttata, are described as well as T. petiveriana (Linnaeus, 1758) and T. nuptialis (Gerstaecker, 1861). The known distribution of the genus in India extends from dry deciduous forests to more humid formations (between latitudes 19 and 10° N). The species live in areas with mean annual rainfall ranging from 500 to 3800 mm.