Master of Science Thesis on the Membracidae of Colombia
González Mozo, L. C. 2014. Sinopsis de Membracidae (Hemiptera: Membracoidea) de Colombia, relacionados con ecosistemas agrícolas. Maestria en Ciencias Agrarias--Entomología, Universidade Nacional de Colombia, Bogotá, Colombia. [iv] + viii + 145 pp. [M.S. thesis; available online]

Immatures and Host Plants of Telamonine Treehoppers
Wallace, M. S. 2014a. The host plants of the Telamonini treehoppers (Hemiptera: Membracidae: Smiliinae) and the first diagnoses of nymphs for 14 species. Zootaxa 3878 (2): 146–166.

Owing to their cryptic shapes and coloration, nymphs of the treehopper tribe Telamonini (with 68 species) closely resemble parts of the plants on which they feed and develop. Wallace’s work provides the first comprehensive list of telamonine host plants along with useful morphological diagnoses and color photos for identifying the fifth instar nymphs of 15 species. The cryptic nymph of Archasia belfragei, below, is hidden in plain view (photo © 2013, by Matthew S. Wallace).

Members of this tribe are recorded from 80 host plant species in 41 genera and 22 families. The total number of hosts species/treehopper ranges from a single host (in 12 telamonine species) to 29 different hosts (in Telamona monticola). Indeed, many telamonines are recorded from more than one plant genus. The genus Quercus serves as a host for 45 of the tribe's 68 species.

Pyrgonota bifoliata: a Species Complex
Su, Y.-C.; Wang, J.-F.; Villanueva, R. J. T.; Nuñeza, O. M.; Lin, C.-P. 2014a. Hopping out of Mindanao: Miocene-Pliocene geological processes and cross-island dispersal as major drivers of diversity for Philippine treehoppers. Journal of Biogeography 41(7): 1277-1290.

Work on the biogeographical history of Pyrgonota bifoliata suggests that Miocene-Pliocene geological events and related cross-island dispersal contributed to species diversity in the Philippines. Using phylogenetic reconstruction based on two genes (mitochondrial cytochrome c oxidase 1 subunit [cox1] and nuclear wingless [wg]), the authors found evidence of nine cryptic species that form the Pyrgonota bifoliata species complex.

Another Dimension to Treehopper Subsociality
Camacho, L.; Keil, C.; Dangles, O. 2014a. Factors influencing egg parasitism in sub-social insects: insights from the treehopper Alchisme grossa (Hemiptera, Auchenorrhyncha, Membracidae). Ecological Entomology 39(1): 58–65.

This work explores the impact of maternal care on egg-parasitism in A. grossa. Females of this treehopper guard their egg masses, using their bodies and ponota to cover the eggs. Moreover, females actively ward off egg parasites by fanning their wings and kicking with their club-shaped hind legs. Camacho et al. found that increased numbers of females aggregated on a single host plant lower the risk and levels of egg parasitism through a “herd dilution effect.” The impact of possible cooperation among egg-guarding females adds another dimension to subsociality in the treehopper tribe Hoplophorionini.

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