A new species of Callosobruchus (Coleoptera: Bruchidae) feeding on seeds of Dunbaria (Fabaceae), a closely related species to a stored-bean pest, C. chinensis
2003
Tsuda, M. (Kyushu Univ., Fukuoka (Japan). Faculty of Agriculture)
Abstract A bean beetle, Callosobruchus utidai new species, is described based on material from Nepal and Thailand. Morphological analysis indicated that it is most closely related to a widely-distributed stored-bean pest, C. chinensis. The larval host plants are the seeds of legumes Dunbaria rotundifolia and D. podocarpa. This is the first bruchid reported to feed on the seeds of Dunbaria. The narrow host range of the species is in contrast to the host range of the pest C. chinensis, which is associated with many legume species of the tribe Phaseoleae and with diverse economic legumes in the subfamily Papilionoideae. Comparison of the host ranges suggests that C. utidai is not of economic importance at present because of oligophagy on non-economic legumes and limited geographical distribution.
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