Silvestri L, Antoniazzi L R, Couri M S, Monje L D, Beldomenico P M
Laboratorio de Ecología de Enfermedades, Facultad de Ciencias Veterinarias, Universidad Nacional del Litoral, RP Kreder 2805, 3080, Esperanza, Santa Fe, Argentina.
Syst Parasitol. 2011 Oct;80(2):137-40. doi: 10.1007/s11230-011-9314-y. Epub 2011 Sep 7.
Species of Philornis Meinert, 1890 (Diptera, Muscidae) are Neotropical dipterans that include species with parasitic larvae which feed on nestling birds. To date, all Philornis species that have been recorded from Argentina have parasitic subcutaneous larvae. Here, for the first time for Argentina, we report the finding of Philornis downsi Dodge & Aitken, 1968, a fly with a nest-dwelling, semi-haematophagous larva. This record, from the humid Chaco ecoregion of Argentina in the nest of a saffron finch Sicalis flaveola pelzelni Sclater, substantially extends the known distribution of this species. We also report the consensus sequences of the internal transcribed spacer 1 (ITS1) and ITS2 regions of three of the specimens for future reference and comparison. Further investigation is needed to determine whether Argentina is part of the historical range of P. downsi or, alternatively, represents a recent expansion of its range, perhaps due to climatic changes or other factors of global environmental variation.
梅纳特按蚊属（Philornis Meinert，1890）（双翅目，蝇科）是新热带区双翅目昆虫，其中一些物种的幼虫具有寄生性，以雏鸟为食。迄今为止，在阿根廷记录到的所有梅纳特按蚊属物种都有皮下寄生幼虫。在此，我们首次在阿根廷报告发现了1968年命名的黄腿梅纳特按蚊（Philornis downsi Dodge & Aitken），其幼虫栖息于鸟巢，具有半吸血习性。该记录来自阿根廷潮湿的查科生态区，在一只橙腹草雀（Sicalis flaveola pelzelni Sclater）的巢中发现，极大地扩展了该物种已知的分布范围。我们还报告了其中三个标本的内转录间隔区1（ITS1）和ITS2区域的共有序列，以供未来参考和比较。需要进一步调查以确定阿根廷是黄腿梅纳特按蚊历史分布范围的一部分，还是代表其范围最近的扩展，这可能是由于气候变化或全球环境变化的其他因素导致的。
