Australian Diplectroninae reviewed (Insecta: Trichoptera), with description of 21 new species, most referred to a new genus

Abstract

The history of studies on Australian caddisflies in the hydropsychid subfamily Diplectroninae is outlined against a broader background of uncertainties in the delineation of the worldwide type genus, Diplectrona Westwood. For the Australian fauna, keys are given to genera of Diplectroninae that occur in Australia and to adult males of species in Diplectrona (including a newly synonymised genus, Diemeniluma Neboiss), Austropsyche Banks, and Arcyphysa gen. nov. Of the 32 diplectronine species recognised, six are referred to each of Diplectrona and Austropsyche, among them one and four newly described species, respectively; and four established species are transferred from Diplectrona to Arcyphysa gen. nov., to join 16 newly described species. Diplectrona cognata Banks is synonymised with D. spinata Banks and Diplectrona bispinosa Jacquemart with Austropsyche victoriana Banks. Diagnoses and descriptions are accompanied by line drawings illustrating most of the diagnostic features of the genera and of most species, supplemented by photographic images. Australian species of Diplectrona are found from south-eastern Queensland to Tasmania, but neither Austropsyche nor Arcyphysa is known from Tasmania. Austropsyche extends from the Grampians in south-western Victoria to south-eastern Queensland, and the majority of species of Arcyphysa are recorded from north-eastern mainland Australia.

The Smicridea (Smicridea) fasciatella species group (Trichoptera: Hydropsychidae) in Brazil: six new species and new distributional records

“…microsaccata Flint, 1991 from Chile and Colombia, respectively, only a pair of reduced internal glands are present in segment VII. The internal glands in abdominal segments VI and VII seem to be a plesiomorphic character in S. (Smicridea), as they also occur in the closely related Smicrideinae genus Smicrophylax Neboiss, 1977, and in the Diplectroninae genera Austropsyche Banks, 1939, Arcyphysa Wells & Neboiss, 2018, and Diplectrona Westwood, 1839(Neboiss 1977Wells & Neboiss 2018).…”

“…Morphological terminology follows mostly Blahnik (1995) for the male genitalia and Wells & Neboiss (2018) for the head setal warts. Species descriptions were made using the DELTA (Description Language for Taxonomy) software (Dallwitz et al 1999) to promote consistency and standardization in descriptive taxonomy.…”

New records of the caddisflies Diplectrona erinya Malicky, 2002 and Diplectrona extrema Banks, 1920 (Trichoptera, Hydropsychidae) from Thailand

“…The pencil drawings were scanned and digitally inked using an iPad via the Procreate application. The description of the wing, genitalia, and general character terminology follows Sun (2017); Wells andNeboiss (2018) andIto andNozaki (2018). The materials examined are deposited in the collection of the Freshwater Biology laboratory, Department of Biology, Faculty of Science, Khon Kaen University (KKU).…”

Review and redescription of species in the brasiliana group of Smicridea (Rhyacophylax) (Trichoptera, Hydropsychidae, Smicrideinae): exploration of the utility of geometric morphometrics as a method for delimitation and characterization of species in the genus

“…All the measures were taken using a stereomicroscope with a graduated eyepiece. The terminology used by Albino et al (2011) was followed for the description of the male genitalia, the one from Wells and Neboiss (2018) for the setose warts, and the one from Oláh and Johanson (2007) for the cranial areas.…”