part of podotarsite The most apical pseudopodomere of the tarsus, delimited by a membrane in place of the foot slit suture. The membrane extends from each side to meet dorsally and thus forms an additional joint. Only some araneomorph spiders such as several Synspermiata or palpimanoids have an articulate podotarsite. spider_anatomy onychium SPD:0000380 tarsal pseudosegment foot