New records of water beetles (Coleoptera) in the territories of Udmurtiya and Bashkiriya

This publication serves as a continuation of the inventory of aquatic beetle faunas in the Udmurtiya and Bashkortostan, a summary of which was published in 2020. The known composition of the faunas of the republics at the time of the study consisted of 230 (for Udmurtiya) and 120 (for Bashkiriya) species of aquatic beetles (including Donaciinae and Bagoiinae). The material for the article was the collections carried out in the framework of the study of the macrozoobenthos of rivers, oxbow lakes and temporary waterbidies from 2019 to 2020. Sampling of adults and beetle larvae from substrates submerged in water (stones and wood) was carried out manually. When collecting aquatic organisms in overgrown water bodies and rivers, a hydrobiological scraper was used. Data on the first finds of 5 species from 5 families in the territory of Udmurtiya and 6 species from 4 families in Bashkiriya are given. They are respectively as following: Orectochilus villosus (Gyrinidae), Haliplus confinis (Haliplidae), Rhantus bistriatus (Dytiscidae), Helophorus redtenbacheri (Helophoridae), Limnebius crinifer (Hydraenidae) in Udmurtiya, and Haliplus varius (Haliplidae), Ilybius fenestratus, Hydroporus palustris, Graptodytes bilineatus (Dytiscidae), Helophorus brevipalpis (Helophoridae), Limnebius cf. parvulus (Hydraenidae) in Bashkiriya.

The Neotropical genus Portelmis Sanderson, 1953 (Coleoptera: Elmidae): three new species, new records and updated key

Elmidae is one of the most diverse families of aquatic beetles, with more than 1500 species in 151 genera. The Neotropical genus Portelmis formerly comprised five species known from Central and northern South America, divided into two species groups. Three new Brazilian species from the nevermanni group are described and illustrated here: Portelmis vanini sp. nov., Portelmis krolowi sp. nov. and Portelmis fusariae sp. nov. New species records for the North, Central-West and Southeast of Brazil are presented. We also provide first SEM images and an updated key for Portelmis species.

Aquatic Beetles (Coleoptera: Dytiscidae, Haliplidae, Noteridae, Hydrophilidae) From Borujen and Lordegan (Chaharmahal and Bakhtiari Province, Iran)

This research was aimed to study aquatic coleopteran faunas of Borujen and Lordegan (as two main towns of the Chaharmahal and Bakhtiari Province). Sampling was done at six stations between September 2017 to July 2018. The aquatic Coleoptera were identified to the species level with the help of keys and related references. Identification of samples was based on morphological characteristics such as taxonomic characters and external genitalia with appropriate entomological reference books and authors. A total of 12 species belonging to 11 genera and 4 families were identified. The greatest number of species identified were found in the family Dytiscidae Leach, 1815 and the least number in the family Hydrophilidae Latreille, 1802. Two species of Agabus Leach, 1817 namely, Agabus conspersus Marsham, 1802 and Agabus bipustulatus Linnaeus, 1767 were the most abundant insects.