First Record of Planorbella Duryi (Wether by, 1879) (Gastropoda: Planorbidae) (= Helisoma Duryi Wether by, 1879) in Jutiapa, Guatemala

First Record of Marisa cornuarietis (Linné, 1758) in Jutiapa, Guatemala

“…Some species of fluvial mollusks intervene in the transmission of parasites of doctor-veterinary relevance [1][2][3][4][5][6], however, the wealth of species of this group turns out to be very scarce [7], and even several they have been introduced and they threaten the distribution of other native species of mollusks [8].…”

New occurrence of exotic mollusk Helisoma duryi (Wetherby, 1879) (Gastropoda: Planorbidae) in Maranhão State, Brazil

“…The planorbid H. duryi originally from the United States of America (Type locality: Everglades, Florida) was first reported in Brazil in 1972, in the State of Goiás (Paraense 1975). To date here are records of occurrence in the states of Bahia, Ceará, Goias, Minas Gerais, Paraíba, Rio de Janeiro, Rio Grande do Norte and São Paulo, generally associated with aquariophily activity (Fernandez et al 2010, Fernandez et al 2013, Simões & Fernandez, 2019. The mollusk can be confused with others planorbids beside the congenera Helisoma trivolvis (Say, 1817) as of genera Biomphalaria: Biomphalaria tenagophila (d'Orbigny 1835) and B. occidentalis Paraense, 1981.…”