Thompson-Cowley L L, Helfer D H, Schmidt G D, Eltzroth E K
Avian Dis. 1979 Jul-Sep;23(3):768-71.
Acanthocephalan parasites of the species Plagiorhynchus (Prosthorhynchus) formosus Van Cleave, 1918, were recovered from the intestinal tracts of two male and two female wild Western Bluebirds (Sialia mexicana). Parasitism by P. formosus was considered to be a contributory cause of death of these breeding adult bluebirds. This is the first reported recovery of acanthocephalan parasites from Western Bluebirds.
1918年，范·克利夫发现的美丽斜吻棘头虫（Prosthorhynchus属）这种棘头虫寄生虫，是从两只雄性和两只雌性野生西部蓝鸲（Sialia mexicana）的肠道中发现的。美丽斜吻棘头虫的寄生被认为是这些成年繁殖期蓝鸲死亡的一个促成因素。这是首次报道从西部蓝鸲体内发现棘头虫寄生虫。
