Curvularia is a Pleosporalean monophyletic genus with a great diversity of species, including relevant phytopathogenic, animal and human pathogenic fungi. However, their microscopic identification is difficult due to overlapping morphological features amongst species. In recent years, multi-locus sequence analysis using the ITS region of the rDNA and fragments of the genes gapdh and tef1 revealed numerous cryptic species, especially in isolates that commonly produced 3-septate conidia. Therefore, based on sequence analysis of the above-mentioned DNA barcodes recommended for species delineation in Curvularia, we propose three novel species, C. paraverruculosa, C. suttoniae and C. vietnamensis, isolated from soil, human clinical specimens and plant material, respectively, collected in different countries. These new species are morphologically characterised and illustrated in the present study. Curvularia paraverruculosa differs from its counterparts, C. americana and C. verruculosa, mainly by its narrower conidia. Curvularia suttoniae and C. vietnamensis are closely related to C. petersonii, but the former two have larger conidia.

中文翻译：

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从临床和环境来源获得的三种弯孢新种。

弯孢霉属（Purosporalean）单种属，具有很大的种类，包括相关的植物病原性，动物和人病原性真菌。然而，由于物种之间的形态特征重叠，它们的显微镜鉴定是困难的。近年来，使用rDNA的ITS区域以及基因gapdh和tef1的片段进行的多基因座序列分析揭示了许多隐种，尤其是在通常产生3个分生孢子的分离株中。因此，基于上述推荐用于弯孢菌属物种鉴定的DNA条形码的序列分析，我们提出了三种新种，分别从土壤，人类临床标本和植物材料中分离得到的副物种C. paraverruculosa，C。suttoniae和C. vietnamensis。 ，收集在不同的国家/地区。在本研究中对这些新物种进行了形态学表征和说明。副弯线虫与其对应的美式弯角线虫和美式弯角线虫的区别在于，其分生孢子线较窄。弯孢曲霉和越南曲霉与小球藻密切相关，但前两者的分生孢子较大。