We describe a case of morphological anomalies in Amblyomma americanum, a medically important species associated with several human diseases and medical conditions. Based on morphological characters using dichotomous morphological keys, high-resolution light microscopy, and scanning electron microscopy imaging, the tick was identified as Am. americanum nymph exhibiting various morphological anomalies including ectromely associate with asymmetry, olygomely (lack) of the fourth left leg, and schizomely (bifurcation of palpus) on the right side. We believe this is the first report of the presence of several spontaneous anomalies in one Am. americanum specimen. Morphological identity of the specimen was corroborated by DNA sequencing of the mitochondrial 16S region. We discuss recent reports of morphological anomalies in ixodid ticks and emphasize the significance of additional studies of teratology in medically important tick species and its potential implications.

中文翻译：

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一例从自然界收集到的美洲A形态异常（Acari：Ixodidae）。

我们描述了一种在美洲盲ly中的形态异常情况，该病是一种与几种人类疾病和医学状况相关的重要医学物种。基于使用二分形态键，高分辨率光学显微镜和扫描电子显微镜成像的形态特征，该tick虫被识别为Am。表现出各种形态异常的美洲若虫，包括与不对称相关的直肠异常，左第四只腿的寡聚体（缺乏）和右侧的裂殖体（palpus分叉）。我们相信这是一个上午出现多个自发异常的第一份报告。美洲标本。线粒体的DNA测序证实了标本的形态特征16S地区。我们讨论了ixodid tick的形态异常的最新报道，并强调了对医学上重要的tick物种的畸形学的其他研究及其潜在意义的重要性。