Basal Updated on 6 January 2023 Towards the base of a leg, a palp, or a spinneret, or an outgrowth; nearer the body (opposite of apical). May be used for secondary appendages like apophyses on appendages like the embolus. Related Articles: Glossary: CheliceraGlossary: DistalGlossary: ApicalMolecular phylogeny, biogeography, and species delimitation of segmented spider genus Liphistius (Araneae: Liphistiidae) in Thailand