Souza Joyce G R, Digiani Maria C, Simões Raquel O, Luque José L, Rodrigues-Silva Rosângela, Maldonado Arnaldo
Laboratório de Biologia e Parasitologia de Mamíferos Silvestres Reservatórios, Instituto Oswaldo Cruz-FIOCRUZ, Av. Brasil, 4365, 21040-900, Rio de Janeiro, RJ, Brazil.
J Parasitol. 2009 Jun;95(3):734-8. doi: 10.1645/GE-1836.1.
Stilestrongylus lanfrediae n. sp. is described from the small intestine of Oligoryzomys nigripes (Cricetidae: Sigmodontinae) collected in the Atlantic Forest (Rio de Janeiro State, Teresópolis, Brazil). The new species shows some similarities to Stilestrongylus stilesi, Stilestrongylus freitasi, Stilestrongylus inexpectatus, Stilestrongylus moreli, and Stilestrongylus andalgala, but it can be distinguished from these species by the following combination of characters: 26 ridges in males and 25 in females at the mid-body, asymmetrical caudal bursa with a pattern of type 2-2-1, rays 6 markedly shorter than other lateral rays, rays 8 inserted asymmetrically on dorsal trunk and shorter than other species, and a proportion of spicule length in relation to body length (SpL/BL) of 25-29%. The new species is also distinguished from other species of Stilestrongylus by the asymmetry of the branches of the dorsal ray and by having the longest spicules.
兰氏斯氏线虫（Stilestrongylus lanfrediae）新种是从在大西洋森林（巴西里约热内卢州特雷索波利斯）采集的黑腹稻鼠（仓鼠科：棉鼠亚科）的小肠中描述的。新种与斯氏斯氏线虫（Stilestrongylus stilesi）、弗雷氏斯氏线虫（Stilestrongylus freitasi）、意外斯氏线虫（Stilestrongylus inexpectatus）、莫氏斯氏线虫（Stilestrongylus moreli）和安达加拉斯氏线虫（Stilestrongylus andalgala）有一些相似之处，但可通过以下特征组合与这些物种区分开来：雄虫虫体中部有26条嵴，雌虫有25条嵴；尾囊不对称，呈2-2-1型；第6根辐肋明显短于其他侧辐肋；第8根辐肋不对称地插入背干，且比其他物种短；交合刺长度与体长的比例（SpL/BL）为25%-29%。新种还通过背辐肋分支的不对称性以及拥有最长的交合刺与斯氏线虫属的其他物种相区分。
