Revista Brasileira de Entomologia | |
Adaptations of two specialist herbivores to movement on the hairy leaf surface of their host, Solanum guaraniticum Hassl (Solanaceae) | |
Lenice Medeiros2  Danessa S. Boligon1  | |
[1] ,UNIJUI Departamento de Biologia e Química Ijuí RS ,Brasil | |
关键词: Cassidinae; Gratiana; morphological adaptation; tarsungulus; trichomes; Adaptação morfológica; Cassidinae; Gratiana; tarsúngulos; tricomas; | |
DOI : 10.1590/S0085-56262007000200011 | |
来源: SciELO | |
【 摘 要 】
Plant trichomes can difficult the attachment and movement of small insects. Here, we examine the hypothesis that the success on the use of densely haired hosts by two cassidine species is determined by differential morphology and behavior. Larvae of Gratiana graminea (Klug, 1829) and Gratiana conformis (Boheman, 1854) move on the leaf surface of their host, Solanum guaraniticum Hassl by anchoring their tarsungulus on the trichome rays or by inserting the tarsungulus tip directly into epidermis. This kind of movement is only possible due to a similar tarsungulus shape among the species. Tarsungulus growth pattern is also similar between species, being relatively small on the posterior aperture, matching the diameter of the host plant trichome rays. The tarsungulus shape associated with differences on ontogenetic growth and attachment pattern allow these two Cassidinae larvae to efficiently move on the pubescent leaf surface of their host.
【 授权许可】
CC BY-NC-ND
All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License
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