Two new species of perlid stoneflies, Acroneuria bachma n. sp. and A. magnifica n. sp., are described from tropical Vietnam. Descriptions of these species are given based on male and female adults, nymphs, and eggs. The adult of A. bachma is distinguished by the presence of a large dark brown marking in the interocellar area and by the absence of patches of sensilla basiconica on the 9th abdominal tergum; the nymph is distinguished by the presence of a narrow and complete M-line marking on head and by the absence of gills on paraprocts. The adult of A. magnifica is distinguished by presence of a distinct light-yellow M-line marking on head and patches of sensilla basiconica which are sparsely distributed on the 9th abdominal tergum; the nymph is distinguished by the presence of an incomplete M-line marking on head and gills on paraprocts. Line-drawings and macro-photographs of the diagnostic characters are provided. Adult and nymphal keys to Southeast Asian species of Acroneuria are also provided.
You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither BioOne nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the BioOne website.