Agaricochirus McLaughlin 1981

Agaricochirus McLaughlin, 1981 Diagnosis. Gills biserial, 11 pairs. Rostrum obtusely triangular. Ocular acicles simple. Crista dentata with 1 accessory tooth. Right chela generally ovate, armature usually as mushroom-shaped tubercles. Carpi of ambulatory legs lacking dorsodistal spine. Sternite of somite XII (thoracomere 6, pereopods 3) with anterior lobe absent, reduced and styliform, or small and subquadrate. Pereopod 4 semichelate; propodal rasp with several rows of corneous scales; preungual process small. Coxae of male pereopods 5 occasionally with slight papilla protruding from one or both gonopores; pleopods 3–5. Female with paired, modified pleopod 1; pleopods 2–5. Uropods symmetrical or nearly so, protopods produced posteriorly. Telson with median cleft usually broadly U-shaped, posterior lobes usually symmetrical, terminal margins unarmed. Type species: Pylopagurus boletifer A. Milne-Edwards and Bouvier, 1893.Agaricochirus属（麦克劳林，1981） 鉴别特征：鳃呈二列，共11对。额角呈钝三角形。眼柄刺简单。齿状脊具1枚副齿。右螯通常呈卵圆形，其表面纹饰多为蘑菇状瘤突。步足腕节无背末刺。第12体节（第6胸节、第3步足）的腹甲前叶缺失、退化为针状，或小型近四方形。第4步足半螯状；掌部刮器具数排角质鳞片；爪前突细小。雄性第5步足基节偶尔会有从一个或两个生殖孔处伸出的细小乳突；具第3至5腹肢。雌性具成对特化的第1腹肢；具第2至5腹肢。尾肢对称或近对称，原肢向后延伸。尾节的中裂通常呈宽U形，后叶通常对称，末端边缘无棘刺。模式种：Pylopagurus boletifer A. Milne-Edwards及Bouvier，1893。