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Revision and Phylogenetic Analysis of Acromis Chevrolat (Coleoptera: Chrysomelidae: Cassidinae: Stolaini)

Caroline S. Chaboo
The Coleopterists Bulletin
Vol. 55, No. 1 (Mar., 2001), pp. 75-102
Stable URL: http://www.jstor.org/stable/4009574
Page Count: 28
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Abstract

The cassidine genus Acromis Chevrolat is revised. A key for identification of adults, illustrated descriptions and extensive distribution data for the three species are provided. Eggs and mature larvae of A. spinifex (Linnaeus) are redescribed. A cladistic analysis of species based on 19 morphological characters is done using the stolaine genera Omaspides Chevrolat and Echoma Chevrolat, as well as Delocrania cossyphoides Guerin (Delocraniini) and Himatidium capense Herbst (Imatidiini) as outgroups. The resulting single most parsimonious tree (steps = 20; CI = 87; RI = 90) provides strong support for resolution within Acromis. Biological implications are discussed in light of the cladogram. /// Se revisiona el género Acromis Chevrolat. Se presentan una clave para la indentificación de adultos, descripciones ilustradas, y datos detallados de distribución para las tres especies. Se redescriben los huevos y las larvas maduras de A. spinifex (Linnaeus). Se hace un análisis cladístico basado en 19 caracteres morfológicos, utilizando los géneros estolainos Omaspides Chevrolat y Echoma Chevrolat, así como Delocrania cossyphoides Guerin (Delocraniini) y Himatidium capense Herbst (Imatidiini) como grupos externos. El único árbol más parsimonioso resultante (pasos = 20; IC = 87; IR = 90) da un apoyo fuerte para la resolución dentro de Acromis. Se discuten implicaciones biológicas a la luz del cladograma.

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