The anatomy of the adult uropodid Fuscouropoda agitans (Arachnida; Acari), with comparative observations on other Acari
The anatomy of the adult uropodid Fuscouropoda agitans (Arachnida; Acari), with comparative observations on other Acari
复制标题
成年尾足类 Fuscouropoda agitans（蛛形纲；螨虫）的解剖结构，以及对其他螨虫的比较观察
作者：
J. Woodring;C. Galbraith
薄的，可压缩的，侧缝和腹板重叠允许有限的运动厚和刚性的背部和腹板的Fuscuropoda agitans。七对大的真皮腺体在表面上张开。转子旋转允许防御性的腿内收和昆虫型的截肢。复杂的下咽部-须肢部-基节有一个颊腔和螯腔，由一个闭锁的上咽部隔开。咽的横截面呈Y形。广泛成对的唾液腺位于非常长和灵巧的3节螯肢上方，一对大的髋腺在第1髋上开口。从四个钝端气管，成束的不分支气管在特定的管道中延伸到所有器官。胃很小，有三对大的盲肠;一层紧密堆积的单层消化细胞单独扩大以吸收-吞噬和消化食物。具典型的中气门排泄管。一个典型的螨类联合神经节存在;混合神经有基底肿胀。一个假定的神经分泌器官起源于足须神经。卵母细胞在小的中子房壁的索柄内扩大。一个大的精包储存在贮精囊中，受精发生在产卵期间。一个张力铰链部分打开男性和女性生殖板;关闭的肌肉作用于非常长的生殖板的apodemes。在睾丸的精原细胞囊内，减数分裂是完全同步的。一个大的，多叶的男性附属腺产生大量的精液;至少四种分泌物的混合物。列举了体壁、生殖器、消化道、口器和腿部肌肉的起源和位置。比较无辐毛螨和辐毛螨表明，在角质层，腿关节，消化系统，排泄系统，生殖系统和基节腺方面的基本和一致的形态差异。
A thin, compressible, lateral suture and ventral plate overlap permit limited movement of the thick and rigid dorsal and ventral plates of Fuscouropoda agitans. Seven pairs of large dermal glands debouch onto the surface. Trochanteral rotation permits defensive leg adpresion and an insectan type of ambulation. The complex hypopharynx‐pedipalpal‐coxae has a buccal and cheliceral cavity separated by an atriculated epipharynx. The pharynx is Y‐shaped in cross section. Extensive paired salivary glands lie above the very long and dexterous 3‐segmented chelicerae, and a large pair of coxal glands debouch on coxae 1. From four blunt‐ended tracheae, bundles of unbranching tracheoles extend in specific tracts to all organs. The ventriculus is small with three pairs of large caeca; a tightly packed single layer of digestive cells individually enlarged to absorb‐phagocytize and digest the food. A typical mesostigmatid excretory tube is present. A typical acarine synganglion is present; mixed nerves have a basal swelling. A postulated neurosecretory organ arises from the pedipalpal nerve. The oocytes enlarge within funicular stalks from the walls of the small median ovary. A large spermatophore is stored in the seminal vesicle; fertilization occurs during oviposition. A tension hinge partially opens both male and female genital plates; closure effected by muscles acting on very long genital plate apodemes. Within sequentially produced spermatogonial cysts of the testes, meiosis is completely synchronous. A large, multilobed male accessory gland produces a large volume of seminal fluid; a mixture of at least four secretions. The origins and msertions of the body wall, genital organ, digestive tract, mouthpart and leg muscles are listed and illustrated. A comparison of anactinotrichid and actinotrichid mites indicates fundamental and consistent morphological differences in aspects of the cuticle, leg articulations, digestive system, excretory system, reproductive system and coxal glands.