Air sac nematodes from birds are known for more than 200 years now and Filaria attenuata was the first described species from falcons, owl and corvid birds. The superficial description and the loss of the original material made F. attenuata a species inquirenda. Seurat (1915) redescribed the species with material from lanner falcon and pallid harrier from Algeria and based on this description Bain and Mawson, Rec S Aust Mus 18:265-28, (1981) created a new species, Serratospiculum seurati, by adding some, slightly divergent, measurements. The current paper is based on light and scanning electron microscopy of five male and 10 female S. seurati specimens from a Peregrine falcon that acquired the infection in Pakistan. The length of the slender male and female nematodes varied between 42–70 and 165–221 mm, respectively, spicules of unequal shape and length measured 292–325 and 638–785 μm. S. seurati was also found in Saker, Barbary and crossbreed falcons.

鸟类的气囊囊线虫已有200多年的历史了，而Filaria tensa是从猎鹰，猫头鹰和弯曲鸟类中首次发现的物种。对原始物质的肤浅描述和损失使得F.衰减菌成为一个被调查物种。塞拉（1915）用来自阿尔及利亚的猎鹰和苍白的猎豹的材料重新描述了该物种，Bain and Mawson，Rec S Aust Mus 18：265-28，（1981）通过添加一些描述，创造了一个新物种Serratospiculum seurati。，略有差异，测量结果。目前的论文是基于光和扫描电子显微镜对五种雄性和十种欧洲S. seurati来自在巴基斯坦获得感染的百富勤猎鹰的标本。纤细的雄性和雌性线虫的长度分别在42-70和165-221 mm之间变化，针状体的形状和长度不等，为292-325和638-785μm。在Saker，Barbary和杂交猎鹰中也发现了S. seurati。