Peltidium is a prodorsal shield found in animals of the subphylum
Chelicerata
The subphylum Chelicerata (from Neo-Latin, , ) constitutes one of the major subdivisions of the phylum Arthropoda. Chelicerates include the sea spiders, horseshoe crabs, and arachnids (including harvestmen, scorpions, spiders, solifuges, tic ...
, in the phylum
Arthropoda
Arthropods ( ) are invertebrates in the phylum Arthropoda. They possess an exoskeleton with a cuticle made of chitin, often mineralised with calcium carbonate, a body with differentiated ( metameric) segments, and paired jointed appendages. ...
. In some groups (
Schizomida
Schizomida, also known as sprickets or short-tailed whip-scorpions, is an order of arachnids, generally less than in length. The order is not yet widely studied. E. O. Wilson has identified schizomids as among the "groups of organisms that des ...
,
Palpigradi,
Solpugida and
Opiliones
The Opiliones (formerly Phalangida) are an Order (biology), order of arachnids,
Common name, colloquially known as harvestmen, harvesters, harvest spiders, or daddy longlegs (see below). , over 6,650 species of harvestmen have been discovered w ...
), the peltidium, also known as the schizopeltid, can be subdivided into the propeltidium, a carapace-like shield that covers the
proterosoma, which comprises the fused acron (protocerebral region) and first four segments, and two free segments, the mesopeltidium and metapeltidium (Online Dictionary of Invertebrate Zoology).
External links
Online Dictionary of Invertebrate Zoology
References
{{reflist
Chelicerate anatomy