In this study, we aimed to fill gaps in the knowledge on stoneflies from Atlantic Forest by providing new data on Gripopterygidae from the Mananciais da Serra Protected Area (MASE), located in Pico do Marumbi State Park, as well as a comprehensive checklist of all Plecoptera species recorded in the state of Paran & aacute;. We identified 17 gripopterygid species from MASE, of which six are firstly recorded from Paran & aacute;, and 10 correspond to undescribed species, totalling 16 new records to the state. Collected specimens belong to the four genera occurring in Brazil as follows: Gripopteryx Pictet, 1841 (4 spp.), Guaranyperla Froehlich, (1 sp.), Paragripopteryx Enderlein, 1909 (7 spp.), and Tupiperla Froehlich, (5 spp.). Guaranyperla, previously known from Brazilian Southeast Region, has been firstly recorded in the South Region. With 17 species, MASE is the third species-richest area of gripopterygid in the country. This fact alone places MASE as one of the top five hotspots of Plecoptera diversity in Brazil. The new data on Gripopterygidae increased the number of stoneflies species recorded in Paran & aacute; to 33 (19 Gripopterygidae, 14 Perlidae). Through this study, we have taken another step towards understanding the rich diversity of stoneflies in the southern Atlantic Forest.
Nothopsyche montivaga (Nozaki, ) is one of the few completely terrestrial caddisflies. Larvae develop only in the terrestrial environment during spring before entering diapause in early summer while adults emerge in late autumn. In this study, 513 larval cases were found in soil during field collections. Larvae were found in 82 of those cases. Their behaviour of moving into soil to pass the summer resembles that of other caddisfly larvae that live in terrestrial habitats during their larval development. Nothopsyche montivaga larvae move into soil having a certain moisture content as an adaptation to dry summer conditions. In the field, larvae sealed the entrances of cases as late as early October, indicating diapause was terminated. Adults then emerged in November. In the laboratory, larvae were reared under either a long-day or short-day photoperiod at a constant temperature of 20 degrees C. The median dates of case sealing under the short- and long-day conditions were 23 October and 8 November, respectively. Therefore, from the field observations and rearing experiments in the laboratory, it is considered that the larval summer diapause plays a significant role in the adult emergence in late autumn in completely terrestrial N. montivaga.
An account is given of further data on the Mongolian fauna of the genus Helophorus Fabricius, 1775. For each species, first and additional province records are provided. Helophorus (Rhopalohelophorus) orientalis Motschulsky, 1860 is reported for the first time from the country and the occurrence of H. (s. str.) jaechi Angus, is confirmed. Thus, at present, 21 Helophorus species are known Mongolia.
Although the nymph and subimaginal genitalia of Chinese caenid species Brachoculis acutalis (Zhou, Sun, and McCafferty, ) have been reported, the imago of this species is unknown. Here the reared imagines and photographed nymphs show that this species has a long series of apomorphies and mixed characters between Brachycercinae and Caeninae. Specifically, in nymph, it has three-segmented maxillary and labial palpi, spiny robust body and triangular prosternum. In imago, it has deep brown body, wing base pigmented grey to brown, two independent intercalaries between CuA and CuP, vestigial projections of terga III-IX, forceps with flat base but tapered apex and egg without cap. These features show this species may represent the prototype of the Caenidae.
A new species of the genus Acroneuria Pictet, 1841 of the tribe Acroneuriini, namely Acroneuria lashihaiensis sp. n., is described and illustrated from Yunnan Province of China. Morphological differences between the new species and known congeners are indicated. A key of Acroneuria is provided for males of the 19 known Asian species.http://zoobank.org/urn:lsid:zoobank.org:pub:1DD2532C-9C6B-4469-BD3A-27A69A8DC684
