Gieysztoria is a genus of Platyhelminthes belonging to the family Dalyelliidae, and within this family it is the genus with the highest numbers of species (approximately 75 species) and the widest distribution.
The genus has cosmopolitan distribution, and mainly inhabits freshwaters.
Species Source: Gieysztoria Ruebush & Hayes, 1939 WoRMS - World Register of Marine Species. Accessed=2024-06-15 Gieysztoria acariaia Marcus, 1946 Gieysztoria ashokae Van Steenkiste, Van Mulken & Artois, 2012 Gieysztoria atalaya Brusa, Damborenea & Norena, 2008 Gieysztoria bellis Marcus, 1946 Gieysztoria beltrani (Gieysztor, 1931) Gieysztoria bergi (Beklemischev, 1927) Gieysztoria billabongensis Jondelius, 1997 Gieysztoria bimaculata Wang, Lu & Wu, 2013 Gieysztoria chiqchi Damborenea, Brusa & Norena, 2005 Gieysztoria chlynovica (Nasonov, 1919) Gieysztoria choctaw Van Steenkiste, Gobert & Artois, 2011 Gieysztoria coronae Noreña-Janssen, 1995 Gieysztoria cuspidata (Schmidt, 1861) Gieysztoria cypris Marcus, 1946 Gieysztoria diadema (Hofsten, 1907) Gieysztoria donnae Young, 1977 Gieysztoria duopunctata Reyes & Brusa, 2021 Gieysztoria euchroa (Gieysztor, 1926) Gieysztoria evelinae Marcus, 1946 Gieysztoria expedita (Hofsten, 1907) Gieysztoria expeditoides Luther, 1955 Gieysztoria falx Brusa, Damborenea & Noreña, 2003 Gieysztoria faubeli Artois, Willems, De Roeck, Jocque & Brendonck, 2004 Gieysztoria foreli (Hofsten, 1911) Gieysztoria garudae Van Steenkiste, Van Mulken & Artois, 2012 Gieysztoria guangdongensis Wang & Xia, 2013 Gieysztoria hermes Reyes & Brusa, 2021 Gieysztoria huizhouensis Zhang, Wu & Wang, 2014 Gieysztoria hymanae Marcus, 1946 Gieysztoria iberica Van Steenkiste, Tessens, Krznaric & Artois, 2011 Gieysztoria infundibuliformis (Fuhrmann, 1894) Gieysztoria intricata Marcus, 1946 Gieysztoria isoldeae Artois, Willems, De Roeck, Jocque & Brendonck, 2005 Gieysztoria italica Luther, 1955 Gieysztoria japonica (Okugawa, 1930) Gieysztoria joannae Young, 1977 Gieysztoria kasasapa Damborenea, Brusa & Norena, 2005 Gieysztoria knipovici (Beklemischev, 1953) Gieysztoria koiwi (Eggers, 1924) Gieysztoria kolasai Young, 1977 Gieysztoria lugubris (Reisinger, 1924) Gieysztoria macrovariata (Weise, 1942) Gieysztoria maritima Luther, 1955 Gieysztoria matilde Brusa, Damborenea & Norena, 2008 Gieysztoria minima (Riedel, 1932) Gieysztoria multiovata Luther, 1955 Gieysztoria namuncurai Damborenea, Brusa & Noreña, 2007 Gieysztoria octospinosa Luther, 1955 Gieysztoria okugawai (Ruebush & Hayes, 1939) Gieysztoria oligocentra (Steinböck, 1948) Gieysztoria ornata (Hofsten, 1907) Gieysztoria oryzae (Nasonov, 1929) Gieysztoria papii Young, 1977 Gieysztoria pavimentata (Beklemischev, 1926) Gieysztoria pisana Kolasa, 1981 Gieysztoria pseudoblodgetti Luther, 1955 Gieysztoria pseudodiadema Norena-Janssen, 1995 Gieysztoria pulchra Wang & Deng, 2006 Gieysztoria qixingyanensis Wang & Rong, 2016 Gieysztoria quadrata Norena-Janssen, 1995 Gieysztoria quadridens (Böhmig, 1898) Gieysztoria quadridensoides (Fuhrmann, 1914) Gieysztoria queenslandica Hochberg & Cannon, 2001 Gieysztoria ramayana Van Steenkiste, Van Mulken & Artois, 2012 Gieysztoria reggae Therriault & Kolasa, 1999 Gieysztoria rubra (Fuhrmann, 1894) Gieysztoria saganae Young, 1977 Gieysztoria santafeensis Norena-Janssen, 1995 Gieysztoria sasa Damborenea, Brusa & Norena, 2005 Gieysztoria shantouensis Zhang, Li & Wang, 2014 Gieysztoria shenzhensis Wang & Wu, 2005 Gieysztoria shiyanensis Wang & Xia, 2014 Gieysztoria sibirica (Plotnikow, 1905) Gieysztoria stokesi Van Steenkiste & Artois, 2012 Gieysztoria subsalsa Luther, 1955 Gieysztoria superba Hartenstein & Dwine, 2000 Gieysztoria taurica (Nasonov, 1923) Gieysztoria therapaina Marcus, 1946 Gieysztoria thienemanni (Reisinger, 1933) Gieysztoria thymara Marcus, 1946 Gieysztoria tigrensis Norena-Janssen, 1995 Gieysztoria tridesma Marcus, 1946 Gieysztoria triquetra (Fuhrmann, 1894) Gieysztoria trisolena Marcus, 1946 Gieysztoria uncia Marcus, 1946 Gieysztoria variata Noreña-Janssen, 1995 Gieysztoria virgulifera (Plotnikow, 1906) Gieysztoria wuyishanensis Wang & Lai, 2013 Gieysztoria zuluensis Van Steenkiste & Artois, 2012
Distribution
The neotropical region Within the Neotropical region, Gieysztoria is the most specious genus, with 24 described species. These taxa exhibit differences in male stylet morphology compared to their European counterparts, with Neotropical species showing greater structural complexity. Other genera in this region are poorly represented: Dalyellia (one species), Microdalyellia (three species), and Sergia (one species).
Argentina In Argentina, seven species of Gieysztoria have been recorded: G. santafeensis, G. quadrata, G. coronae, G. tigrensis, G. pseudodiadema, G. variata, and G. falx. Additionally, a single species of Microdalyellia (M. fairchildi) and one species of Dalyellia (D. obscura) are known.
References