Two new species of Leptus Latreille, 1796 (Trombidiformes: Erythraeidae) from the Canary Islands, parasitising Curculionidae (Insecta: Coleoptera), with new metrical data for some Leptus spp.

Leptus (Leptus) grancanaricus n. sp. and L. (L.) machadoi n. sp. are described from Gran Canaria and Fuerteventura (Canary Islands). They were collected from new hosts for the genus Leptus: Herpisticus guanarteme Machado and Laparocerus maxorata Machado (Coleoptera: Curculionidae). New metrical data for Leptus (Leptus) andae, L. (L.) akkus, L. (L.) hammameticus, L. (L.) horiacus and L. (L.) tammuzi based on examination on the type-material are provided.

A new species of Leptus (Leptus) (Trombidiformes: Erythraeidae) and new records of Leptus (Leptus) haitlingeri Jacinavicius, Bassini-Silva & Welbourn, 2019 for Brazil

Erythraeidae Robineau-Desvoidy has 60 genera worldwide, of which Leptus Latreille has around 260 species described, with 15 of these recorded from Brazil. Here, we describe Leptus (Leptus) flechtmanni sp. n. from a cave in the state of Pará. Additional material attributed to this species is reported from other caves and also parasitizing a harvestman. In addition, SEM images and new Brazilian host records (Diplopoda and Hemiptera) are presented for Leptus (Leptus) haitlingeri from the states of São Paulo and Rio de Janeiro.

A new species of Leptus (Leptus) (Trombidiformes: Erythraeidae) and new records of Leptus (Leptus) haitlingeri Jacinavicius, Bassini-Silva & Welbourn, 2019 for Brazil

Erythraeidae Robineau-Desvoidy has 60 genera worldwide, of which Leptus Latreille has around 260 species described, with 15 of these recorded from Brazil. Here, we describe Leptus (Leptus) flechtmanni sp. n. from a cave in the state of Pará. Additional material attributed to this species is reported from other caves and also parasitizing a harvestman. In addition, SEM images and new Brazilian host records (Diplopoda and Hemiptera) are presented for Leptus (Leptus) haitlingeri from the states of São Paulo and Rio de Janeiro.

Leptus (Leptus) simonettae Haitlinger, 2000 (Trombidiformes: Erythraeidae) parasitizing a soft tick (Ixodida: Argasidae) in Brazil

Leptus Latreille is the most diverse genus of Erythraeidae Robineau-Desvoidy, with 275 species (based on larval stage) worldwide described. Their larval stage parasitizes different species of arthropods. Until date, 12 species of Leptus have been registered for Brazil. In this study, we identified for the first time a larva of Leptus parasitizing an adult Ornithodoros soft tick in Brazil. This is the first record of a mite parasitizing an argasid tick, and increases the known number of Leptus in Brazil to 13.