Updated checklist of caddisflies (Insecta: Trichoptera) from the state of Piauí, Northeast Brazil, including a new species and new geographical records.

Some regions, such as the Northeast Region of Brazil, are still severely understudied and the trichopteran fauna of this region is not entirely known, mainly in areas from Cerrado and Caatinga biomes. Currently, 25 species have been reported from Piauí State, but most of these records are concentrated from one locality. This study aimed to update the knowledge of Trichoptera diversity in this state, including the description of a new species and new geographic records for the Northeast region and Brazil. The samples were collected in seven municipalities, using various traps. Specimens were also received from the municipality of Bom Jesus. Thirty-two species were added for Trichoptera fauna of Piauí, 14 of these represent new records for Northeast Brazil; furthermore, Neotrichia palma Flint 1982 is a new record for Brazil. Additionally, a new species, Cernotina longa sp. nov., is describe and illustrate, being the third nominal record of the genus for the Caatinga biome. Thus, with the contribution of this study, 57 species, 20 genera and seven families of caddisflies are known for Piauí State.

Caddisflies (Insecta: Trichoptera) from Maranhão State, Northeast Region, Brazil: A new species, checklist, and new geographical records.

In order to improve knowledge of Trichoptera diversity in Northeast Region, Brazil, we present here the first checklist of caddisflies from Maranhão State with a description of a new species and geographical records for the Northeast Region and for all of Brazil. Collections were made in 16 sites distributed in three municipalities of Maranhão State. A total of 54 caddisflies species, 26 genera and 10 families were recorded, including one new species of Leptoceridae, Triplectides maranhensis sp. nov., which is described and illustrated. All species listed here are recorded for the first time for the state, 23 of which are new records for the Northeast Region, as well as five new species for Brazil. These results increase the number of species reported from the Northeast Region from 167 to 221.

First records of Ochrotrichia Mosely, 1934 (Trichoptera: Hydroptilidae) in Northeastern Brazil: Five new species and two new geographical records.

About 170 species have been assigned to the New World genus Ochrotrichia, only two of which were previously recorded from Brazil. Material collected in Bahia and Ceará states represent the first records of this genus from Northeastern Brazil and reveal five new species of Ochrotrichia. These are described and illustrated in this paper: O. caatinga sp. nov. (O. aldama group, from Ceará), O. priapo sp. nov. (O. aldama group, from Bahia); O. limeirai sp. nov. (O. aldama group, from Ceará), O. constricta sp. nov. (undetermined group, from Bahia), and O. igrapiuna sp. nov. (O. xena group, from Bahia). Ochrotrichia manuensis Flint & Bueno-Soria 1999 is firstly recorded from Brazil and O. patulosa (Wasmund & Holzenthal 2007) is firstly recorded from Northeastern Brazil. 

A new species and new records of microcaddisflies (Trichoptera: Hydroptilidae) from northeastern Brazil.

The Hydroptilidae constitute the most diverse and widespread family of Trichoptera in the world. About 90 species of microcaddisflies have been recorded from Brazil, but the northeastern region is one of the least-sampled. In this work we describe a new species of Metrichia from Pernambuco State. Furthermore, we present the first records of Flintiella andreae Angrisano 1995 and Oxyethira bettyae Thomson & Holzenthal 2012 from Brazil, and four other new records from the northeastern region.