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Abstract Determining the factors affecting the structure of insect herbivore communities is a major challenge in ecology. Previous research demonstrated that plant defenses determine plant‐herbivore associations. However, non‐defensive variables may also explain why some plant species are associated with more diverse insect herbivore assemblages than others. Neotropical rolled‐leaf beetles (CephaloleiaandChelobasis) complete their life cycle inside the young rolled leaves of their host plants in the order Zingiberales. The diet breadth of each species in this assemblage is particularly well‐known at our study site, La Selva Biological Station in Costa Rica. This study focused on the following non‐defensive variables: host plant elevational and geographic range size, soil type, habitat, local abundance, plant size, and leaf size. Because plant characteristics among closely related plants are not independent, we analyzed these variables in a phylogenetic context. We detected a positive effect of leaf width on rolled‐leaf beetle species richness (explaining 55% of the variation), abundance (28% of the variation and 57% when habitat is included in the model), diversity (37% of the variation), and community structure (6% of the variation, and 21%–26% when taxonomic family is included in the model). Our study demonstrates that Zingiberales leaf width influences positively rolled‐leaf beetle species richness, abundance, and diversity. This effect varies among plant families. Our study shows that plant architecture plays an important role in structuring insect herbivore assemblages in Zingiberales. Our results highlight the importance of including variables beyond plant defenses to understand the ecology and evolution of plant‐herbivore interactions.
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This content will become publicly available on July 1, 2026
A New Species of Enicospilus Stephens, 1835 (Ichneumonidae, Ophioninae), from Southern Mexico, Parasitic on Zanola verago Cramer, 1777 (Lepidoptera, Apatelodidae), Feeding on Piper neesianum C. DC. (Piperaceae)
Plant–herbivore–parasitoid systems are poorly studied in the tropics. Enicospilus carmenae Campos and Palacio sp. nov. are described, originating from southern Mexico in the Yucatan Peninsula and establishing a new tri-trophic interaction. This species is a koinobiont larval endoparasitoid of the American silkworm moth caterpillar Zanola verago (Cramer) (Lepidoptera: Apatelodidae) feeding on the shrub Piper neesianum C.DC. (Piperaceae) in a semi-evergreen forest. The host plant P. neesianum had no herbivore records to date, and a single collection event yielded the rearing of a new species of Enicospilus (Ichneumonidae, Ophioninae). Morphological, molecular (COI), biological, ecological, and geographical data are integrated to delineate the new species.
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- Award ID(s):
- 2133818
- PAR ID:
- 10623959
- Publisher / Repository:
- MDPI
- Date Published:
- Journal Name:
- Diversity
- Volume:
- 17
- Issue:
- 7
- ISSN:
- 1424-2818
- Page Range / eLocation ID:
- 466
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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