Cicchino A C, Cobeñas M E, Muñoz Bulman G, Diaz J C, Laos A
Department of Scientific Entomology, La Plata, Buenos Aires, Argentina.
J Med Entomol. 1998 Nov;35(6):922-30. doi: 10.1093/jmedent/35.6.922.
The hematophagous sucking louse Microthoracius mazzai Werneck, 1932, is redescribed and identified as a parasite of alpacas, Lama pacos L. Specimens were collected on animals 10-14 mo old, located on a large community farm at 4,600 m above sea level in the Peruvian Andes. In total, 26 scanning electron microscope (SEM) figures are included that highlight salient and differential characteristics, especially the unique elongated spindle-shaped head, which is almost as long as its abdomen. Alpacas, 1 of the 4 species of South American camelids, are important for their production of high-quality wool in the Andes Mountain range countries, especially Peru and Bolivia; to a lesser degree Chile; and more recently Argentina, where breeding and disease control programs are receiving increased technical support. Information is given on the prevalence of lice infestations in the flock, clinical signs, and economic losses. We report the efficacy of moxidectin (SC, 200 mcg/kg, b.w.) in a repeated treatment program of 7-10 d, which is currently used for mange control in these ruminants.
吸血虱马氏微胸虱（Microthoracius mazzai Werneck，1932）被重新描述，并被确定为羊驼（Lama pacos L.）的一种寄生虫。样本采集于10至14月龄的动物，这些动物位于秘鲁安第斯山脉海拔4600米的一个大型社区农场。本文总共包含26张扫描电子显微镜（SEM）图片，突出了显著和不同的特征，特别是独特的细长纺锤形头部，其长度几乎与腹部相等。羊驼是南美骆驼科4个物种之一，在安第斯山脉国家，特别是秘鲁和玻利维亚，因其生产高质量羊毛而具有重要意义；在智利的重要性稍低；最近在阿根廷也受到重视，该国的养殖和疾病控制项目正获得越来越多的技术支持。文中给出了羊群中虱子感染的流行情况、临床症状和经济损失的信息。我们报告了莫西菌素（皮下注射，200微克/千克体重）在7至10天重复治疗方案中的疗效，该方案目前用于这些反刍动物的疥螨控制。
