ABSTRACT Alticini is the most diverse tribe of Chrysomelidae with approximately 8,000 species. Despite of its high diversity, little is known about their natural history and immature stages. Herein, we describe the immatures of Omophoita personata (Illiger, 1807) reared in laboratory from adults sampled in field. We also investigated and compared with immatures of O. octoguttata (Fabricius, 1775). Detailed morphology and chaetotaxy are presented. Larvae of O. personata have their bodies covered with tubercles and the stemmata are absent. These characteristics are shared with other Oedionychina species, reinforcing the stability of these morphological characteristics as diagnostic of this subtribe. This study provides important descriptive and comparative data that increases the knowledge about Alticini immatures.

Abstract Laselva cleidae sp. nov., the first species of LaselvaFurth, 2007 found in Brazil is described and illustrated. Species of Laselva are compared with those of DeciplatusLinzmeier & Konstantinov, 2009 and AndersonalticaLinzmeier & Konstantinov, 2012. This is the first species of Laselva recorded to South America.

RESUMO Alticini é a maior tribo de Chrysomelidae e representa grande parte da fauna de insetos fitófagos. Entretanto, o conhecimento dessa tribo no sudoeste do Paraná é inexistente e neste estudo o objetivo foi buscar informações sobre a riqueza, abundância, diversidade e composição das assembleias nesta região. O estudo foi realizado semanalmente, com armadilha Malaise, de outubro/2016 a março/2017 em fragmentos de mata nos municípios de Planalto, Realeza e Santa Izabel do Oeste. Foram coletados 1.657 indivíduos de Alticini pertencentes a 20 gêneros e 59 espécies sendo que a maioria delas apresentou poucos indivíduos. As espécies mais abundantes foram Trichaltica sp. 2, Margaridisa sp., Omophoita octoguttata e Epitrix sp. 1, correspondendo a 85,8% de todos os Alticini coletados. Margaridisa sp. foi a espécie dominante nos fragmentos de Santa Izabel do Oeste e Realeza. Trichaltica sp. 2 foi coletada somente no fragmento de Planalto. Quanto à composição de espécies, a similaridade foi baixa e apenas quatro espécies foram compartilhadas entre todos os fragmentos. Este foi o primeiro inventário desenvolvido no sudoeste do Paraná que contribui para o conhecimento das espécies de Alticini dessa região.

ABSTRACT Alticini is the largest tribe of Chrysomelidae and represents a large amount of the phytophagous insects’ fauna. However, the knowledge of this tribe in the southwest of Paraná is inexistent and, in this study, we aimed to seek information about the richness, abundance, diversity and composition of the assemblages in this region. The study was carried out weekly from October/2016 to March/2017 in forest fragments in the municipalities of Planalto, Realeza and Santa Izabel do Oeste, where Malaise traps were used. A total of 1,657 individuals of Alticini were collected, distributed in 20 genera and 59 species, with the majority of them showing few individuals. The most abundant species were Trichaltica sp. 2, Margaridisa sp., Omophoita octoguttata and Epitrix sp. 1, corresponding to 85.8% of all Alticini sampled. Margaridisa sp. was the dominant species in the fragments of Santa Izabel do Oeste and Realeza. Trichaltica sp. 2 was collected only in the Planalto fragment. Regarding to the species composition, the similarity was low, and only four species were shared among all fragments. This was the first survey developed in southwest Paraná, which contributed to knowledge of Alticini species in this region.