期刊
ZOOTAXA
卷 4433, 期 1, 页码 127-140出版社
MAGNOLIA PRESS
DOI: 10.11646/zootaxa.4433.1.7
关键词
Curculionidae; Molytinae; Conotrachelus dimidiatus; morphology; immature stages; egg; larva; pupa; weevil; larval development; life history; host plant; Mexico; Picudo de la Guayaba
类别
资金
- Consejo Nacional de Ciencia y Tecnologia, CONACyT, Mexico [PDPCPN-2013-01-214665]
- Universidad Autonoma de Puebla
- Czech Ministry of Agriculture (Mze CR) [RO0418]
The mature larva and pupa of Conotrachelus dimidiatus Champion, 1904 (Curculionidae: Molytinae) are morphologically re-described, keyed and, for the first time, compared with known larvae and pupae of other Conotrachelus species. The chaetotaxy of the larval and pupal body in the genus Conotrachelus is probably strictly uniform. The immature stages of described species are also compared with available data on the immature stages of genera from several tribes in the subfamily Molytinae. All larvae of Conotrachelus have a distinct endocranial line of a different size and a frons with only three setae. The states of these two distinct characteristics in larvae of the eight known Conotrachelus species are constant and unique compared to other tribes in the subfamily Molytinae. In Central Mexico, overwintering Conotrachelus beetles emerge in July and then feed and mate on host plants. Larvae are endophagous within the fruits. In September and October, the larvae pupate in the soil. This new information will be very useful in the application of pesticides to the fight against this well-known pest in Mexico.
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