Effective Maxwell's equations in general periodic microstructures

We study the time harmonic Maxwell equations in a meta-material consisting of perfect conductors and void space. The meta-material is assumed to be periodic with period $\eta > 0$; we study the behaviour of solutions $(E^{\eta}, H^{\eta})$ in the limit $\eta \to 0$ and derive an effective system. In geometries with a non-trivial topology, the limit system implies that certain components of the effective fields vanish. We identify the corresponding effective system and can predict, from topological properties of the meta-material, whether or not it permits the propagation of waves

A new species of miogryllus saussure, 1877 and new record of miogryllus piracicabensis piza, 1960 (Orthoptera: Gryllidae) from state of rio grande do sul, Brazil, with calling song and chromosome complement

In this paper we describe a new species of Miogryllus cricket collected from the grasses at urban area of the municipality of Itaqui, State of Rio Grande do Sul, Brazil, highlighting phallic sclerites morphology, calling song parameters and chromosome complement. We also provide a new record for Miogryllus piracicabensis Piza, 1960 to the southern Brazil, improving calling song and karyotype information for this species. The type-material and vouchers are deposited in the Museu de Zoologia da Universidade de São Paulo (MZUSP). © 2017 Magnolia Press

A new species of miogryllus saussure, 1877 and new record of miogryllus piracicabensis piza, 1960 (Orthoptera: Gryllidae) from state of rio grande do sul, Brazil, with calling song and chromosome complement

In this paper we describe a new species of Miogryllus cricket collected from the grasses at urban area of the municipality of Itaqui, State of Rio Grande do Sul, Brazil, highlighting phallic sclerites morphology, calling song parameters and chromosome complement. We also provide a new record for Miogryllus piracicabensis Piza, 1960 to the southern Brazil, improving calling song and karyotype information for this species. The type-material and vouchers are deposited in the Museu de Zoologia da Universidade de São Paulo (MZUSP). © 2017 Magnolia Press

FIGURES 23–28 in A new species of Miogryllus Saussure, 1877 and new record of Miogryllus piracicabensis Piza, 1960 (Orthoptera: Gryllidae) from State of Rio Grande do Sul, Brazil, with calling song and chromosome complement

FIGURES 23–28. Male morphological characteristics of Miogryllus piracicabensis Piza, 1960. 23, 24, 25—habitus after alcohol fixation, in dorsal, ventral and lateral views, respectively; 26—head, lateral view; 27—supranal plate; 28—subgenital plate