Aquatic beetles are potential indicators of freshwater ecosystem and play an important role in food web and nutrient cycling. Parameters like pH, temperature, conductivity, total dissolved solids, ...salinity, and dissolved oxygen, are important water quality parameters. The present study is focused on the diversity of aquatic beetles and assessing water quality parameters of the sacred Indrayani River from various sites namely Valvan, Kamshet, Warangwadi, Begadewadi, Moshigaon, Alandi, Dhanore, and Tulapur. A total of 94 examples of aquatic beetles belonging to 31 species under 19 genera and four families from Indrayani River were recorded along with water quality parameters.
A new genus of Noterini, Prionohydrus Gomez and Miller gen. n., and three new species are described from South America: Prionohydrus matogrossensis Gomez and Miller sp. n. from Brazil and ...Prionohydrus marc Gomez and Miller sp. n. and Prionohydrus ubercornis Gomez and Miller sp. n. from Venezuela. The new genus was scored for characters presented in a recent phylogenetic analysis of the family, and key morphological characters are illustrated, including male and female genitalia. A parsimony analysis of these data resulted in a single, most parsimonious solution, with members of the new genus resolved as sister to Mesonoterus Sharp with moderate support. Prionohydrus is similar to Mesonoterus and can be distinguished from this and other Noterini based on a combination of the following: 1) distal attachment of protarsus to protibia; 2) posterior protibial spine present; 3) single, weakly curved, apical protibial spur present; 4) last abdominal tergum with large medial spine flanked by numerous setae; 5) posterior mesotibial spur strongly serrate; 6) anterior metatibial spur strongly serrate; 7) prosternal process narrow, rounded apically, and widest near the middle; 8) prosternum longitudinally broad and glabrous; 9) weak, angular setae along posterodistal margin of metafemur present; 10) pronotal bead moderately broad; 11) cluster of setae at apex of medial metacoxal lobe present; and 12) antenna of males expanded, from slightly incrassate to strongly incrassate.
The aim of this study was to investigate the biodiversity and structure of the aquatic beetle community living in Tonga Lake, a protected area classified by Ramsar in 1983, northeastern Algeria, as ...well as to analyse the effect of environmental factorsin particular, the degree of invasion by physicochemical parameters of the water on the abundance and species richness of the aquatic beetle community. The collections were carried out between March 2017 and February 2018, at three selected sites. In total, 1.212 individuals were collected, 24 species were determined. The highest diversity was recorded during spring. Water samples were sampled seasonally from each site. The GLM showed that aquatic beetle abundance varied considerably among sites on a seasonal basis. GLM also showed significant effects of water physicochemical parameters on abundance and species richness of the beetle community.
A taxonomic study of the genus Noterus Clairville in Korea is presented. Three species including a new species, Noterus coreanus sp. nov., are recognized. Habitus photographs of a new species, ...description, mtDNA information, and diagnostic characters with illustrations are provided. A key to the males of Korean Noterus species is also provided.
Notomicrinae (Coleoptera: Noteridae) is a subfamily of minute and ecologically diverse aquatic beetles distributed across the Southeast Asia, Oceania, and the Americas. We investigate the evolution ...of Notomicrinae and construct the first species-level phylogeny within Noteridae using five nuclear and mitochondrial gene fragments. We focus on the genus Notomicrus Sharp (Coleoptera: Noteridae), sampling 13 of the 17 known Notomicrus species and an additional 11 putative undescribed species. We also include Phreatodytes haibaraensis Uéno (Coleoptera: Noteridae). Datasets are analyzed in Maximum Likelihood and Bayesian frameworks. With these, we 1) estimate divergence times among notomicrine taxa and reconstruct the biogeographical history of the group, particularly testing the hypothesis of Gondwanan vicariance between Old World and New World Notomicrus; 2) additionally, we assess ecological plasticity within Notomicrinae in the context of the phylogeny; and 3) finally, we test the monophyly of tentative species groups within Notomicrus and place putative new taxa. We recover a monophyletic Notomicrinae, with Phreatodytes sister to Notomicrus. We estimate the crown age of Notomicrinae to be ca. 110 Mya. The crown age of Notomicrus is recovered as ca. 75 Mya, there diverging into reciprocally monophyletic Old and New World clades, suggesting Gondwanan vicariance. Our phylogenetic estimate indicates a strong degree of ecological plasticity within Notomicrinae, with habitat switching occurring in recently diverging taxa. Finally, we recover five main species groups in Notomicrus, one Old World, Four New World, with tentative affirmation of the placement of undescribed species.
The Florida State Collection of Arthropods (FSCA) ranks in the top 10 largest Coleoptera collections in the United States of America with in excess of 1.5 million pinned beetles and significant ...amounts of materials in bulk collections and other unprocessed samples. The suborder Adephaga currently comprises approximately 34,000 species in 10 extant families and the suborder Myxophaga contains approximately 94 species in four extant families. The FSCA owns type material in the adephagan families Carabidae, Dytiscidae, Gyrinidae, Haliplidae, and Noteridae. The myxophagan holdings in the FSCA include type material from the families Hydroscaphidae and Lepiceridae. There were no holdings of type material in the suborder Archostemata at FSCA. This catalogue documents the FSCA type material for 253 species in 80 genera across the two suborders. A total of 3,528 type specimens are reported, including 60 holotypes, 36 allotypes, 3,426 paratypes, and six syntypes.
The New World species of the minute aquatic beetle genus
Sharp compose a much greater diversity than their Old World congeners, with 14 of the 17 known
species occurring in the Neotropics. A recent ...phylogenetic study recovered four primary New World species groups and found that there are a number of undescribed species across all of these main lineages. Here, we provide a taxonomic key to these New World species groups, including two described species that we currently do not place in any group ("
" species), complete with images and illustrations of diagnostic characters and taxonomic notes including a list of known species in each group. This work provides a scaffold for further planned taxonomic revisions within the genus. In addition, we review the first of the four New World groups, the
species group and describe one new taxon,
from northern Brazil. Provided are descriptions, habitus images and illustrations of diagnostic characters.
This checklist summarises our present knowledge on Moroccan distribution of the water beetles of five families: Gyrinidae, Haliplidae, Noteridae, Hygrobiidae and Dytiscidae. It includes all available ...faunistic data based on material collected by the authors and from the private collections, as well as from the literature, PhD theses, and other unpublished sources covering a period between 1914 and 2018. The checklist of 112 species of 40 genera is presented with species distributions in Morocco and North Africa. Hydroglyphus major (Sharp, 1882) is reported for the first time from Morocco. Six species (Agabus dilatatus (Brullé, 1832), Hydroporus longulus Mulsant and Rey, 1861, H. nigrita (Fabricus, 1792), H. planus (Fabricius, 1782), Bidessus pumilus (Aubé, 1838) and Ilybius fuliginosus (Fabricius, 1792)) are excluded from the country's fauna. A chorological analysis shows that most species are essentially Mediterranean (60%), whilst those whose distribution is wider in Palearctic (25%) or extends into Nearctic (9.29%) or Afrotropical regions (5.71%) are clearly less represented. This chorotype pattern is similar to that observed for other aquatic insects in the same study area.
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