1257 KB25 KB200520192014Figueroa, José Manuel Tierno deVinçon, GillesZwick, Peterletnik:10številka:5str. 43-51COBISSID:1407477ISSN:1854-0392ISSN:1855-5810URN:URN:NBN:SI:doc-WP9D3TA2enMississipi College, Dept. of BiologyPrirodoslovni muzej SlovenijeIlliesiaentomologyLeuctra bidulaLeuctra ketamensisPlecopterastonefliesMorphology and systematic position of two Leuctra species (Plecoptera: Leuctridae) believed to have no specilla|Leuctra bidula Aubert and L. ketamensis Sánchez-Ortega & Azzouz were believed to lack specilla, other sperm transmitting organs were not known. We show that both have a normal penis attachment bulb displaced deep into segment IX. Unlike in most other Leuctra it is not visible from outside. From the bulb issue two narrow sperm ducts surrounded by a common tube. Details differ between the two species. In L. bidula the inner paraproct lobes remain visibly connected to the bulb. The rest of the paraprocts remains close to sternite IX, but in vertical position. L. ketamensis lacks such visible connection, the modified paraprocts lie caudo-dorsally. Transformation of the outer paraproct lobes into a supraanal hooklet in L. nigra (Olivier) provides a model for the origin of long prongs and associated dorsal structures issuing laterally from the paraprocts of L. bidula and L. ketamensis whose closest relatives within genus Leuctra are unknownTEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaPrirodoslovni muzej Slovenije