Canejo Rafael P R, Rodrigues Higor D D, Moreira Felipe F F
Laboratório de Entomologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brazil.
PLoS One. 2025 Aug 13;20(8):e0328868. doi: 10.1371/journal.pone.0328868. eCollection 2025.
Limnocoris Stål, 1860 (Hemiptera: Heteroptera: Naucoridae) occurs from the United States to Argentina and is the most speciose genus of Naucoridae, with 75 valid species. Four taxonomic revisions were recently published, which facilitates the identification of described species and the discovery of new ones. Nonetheless, the female terminalia of the genus remains mostly unknown and the male genital capsule has been often ignored due to its uniformity among species. This study aims to fill this gap by providing descriptions and photographs of the female terminalia and male genital capsule for 28 species from Brazil, including two that are described here: L. curvipenis n. sp. and L. sitesi n. sp. Both of them display diagnostic characters in the female terminalia, and a distinct male phallosoma is herein recorded for the first time in the genus. The following new synonymies are proposed: Limnocoris intermedius Nieser & Lopez-Ruf n. syn. and L. lanemeloi Nieser & Lopez-Ruf n. syn. as junior synonyms of L. decarloi Nieser & Lopez-Ruf, and L. nigropunctatus Montandon n. syn. as junior synonym of L. pauper Montandon. The following species are resurrected from synonymy and their species status are restored: Limnocoris admontandoni La Rivers stat. restit. from synonymy with L. insignis Stål, and L. sattleri De Carlo stat. restit. from synonymy with L. nigropunctatus. Our work reveals a notable diversity in the female terminalia of the taxa examined and provides a basis for future taxonomic and systematic studies on this and other genera of Naucoridae.
Limnocoris属由施塔尔于1860年建立(半翅目:异翅亚目:仰蝽科),分布于美国至阿根廷地区,是仰蝽科中物种最为丰富的属,有75个有效物种。最近发表了四项分类学修订,这有助于已描述物种的鉴定和新物种的发现。尽管如此,该属的雌性外生殖器大多仍不为人所知,而雄性生殖囊由于物种间的一致性常被忽视。本研究旨在填补这一空白,提供来自巴西的28个物种的雌性外生殖器和雄性生殖囊的描述及照片,其中包括在此描述的两个新物种:弯阴茎Limnocoris curvipenis n. sp.和西特氏Limnocoris sitesi n. sp.。它们在雌性外生殖器上均显示出诊断特征,并且在该属中首次记录到独特的雄性阳茎体。提出了以下新异名:Limnocoris intermedius Nieser & Lopez-Ruf n. syn.和L. lanemeloi Nieser & Lopez-Ruf n. syn.作为L. decarloi Nieser & Lopez-Ruf的次异名,以及L. nigropunctatus Montandon n. syn.作为L. pauper Montandon的次异名。以下物种从异名中恢复并恢复其物种地位:Limnocoris admontandoni La Rivers stat. restit.从与L. insignis Stål的异名中恢复,以及L. sattleri De Carlo stat. restit.从与L. nigropunctatus的异名中恢复。我们的工作揭示了所研究分类单元雌性外生殖器的显著多样性,并为该属及其他仰蝽科属的未来分类学和系统学研究提供了基础。