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United States Department of Agriculture

Agricultural Research Service

Title: A New Genus of the Orobitini and Preliminary Discussion on the Relationships of the Tribe (Coleoptera: Curculionidae).

Authors
item Korotyaev, Boris - RUSSIAN ACAD. OF SCIENCES
item KONSTANTINOV, ALEXANDER
item O'Brien, Charles - FL. A&M UNIVERSITY, TALLA

Submitted to: Proceedings of the Entomological Society of Washington
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: October 30, 1999
Publication Date: N/A

Interpretive Summary: Weevils are the largest and most morphologically diverse family of beetles (Coleoptera). Most weevils are plant eaters. Some species are severe pests of agricultural crops in the United States, for example the boll weevil. This paper treats a tribe of weevils (Orobitini) distributed in the Palearctic and Neotropical regions. It provides a description of a new wgenus with two previously undescribed species from the tropics and a preliminary discussion of its relationship to other weevil taxa. It also provides a key for the subfamilies related to the tribe under consideration. This study will be important to taxonomists, ecologists, agriculturalists, and persons involved in quarantine activities.

Technical Abstract: The new genus Parorobitis of the tribe Orobitini and two new species Parorobitis gibbus (Paraguay: Puerto P. Stroessner, Alto Parana, 6 km W. Puerto P. Stroessner) and Parorobitis minutus (Brazil: Curitiba Parana) are described. The tribe Orobitini is redescribed based on the characters of Oribitis and Parorobitis. A key to genera of Orobitini and diagnostic characters of the group are provided. Several different morphological structures including head, thorax, wings and elytra are used to discuss relationships of the tribe with Zygopinae, Ceutorhynchinae, and Baridinae. A key to these taxa is provided.

Last Modified: 9/10/2014
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