WebApr 14, 2024 · Their body is composed of a head; which is rounded above and flattened below with mandibles attached to the gnathochilarium (a plate-like structure similar to a jaw). And the body which is cylindrical with many metric segments acting as an exoskeleton. The body contains five chitinous plates; the tergite plate above; pleurites on every side … WebFeb 4, 2024 · The gnathochilarium of all studied Platydesmida follows the typical diplopodan structure, consisting of a complete or divided mentum (promentum + …
Maxilla (arthropod mouthpart) - Wikipedia
WebThe gnathochilarium of O. avatar consists of two short posterior cardo-areas that are connected to the gula posteriorly via a single inter- and postmentum. Anteriorly, the cardo-areas merge with the stipites. Each gnathochilarial stipes bears two palps at its anterior margin. Two lamellae linguales are present medial to the gnathochilarial ... blk2life a future past theo croker
Phylum Arthropoda- Characteristics, classification, examples
WebMay 1, 2024 · The species-rich family Siphonophoridae includes ten genera and 106 species, and is recognized by having: straight antennae, 5th and 6th antennomeres with distal circular sensory pits and the head drawn out into a long beak, ventrally closed by a gnathochilarium consisting of a single piece, and the final podomeres of the posterior … The gnathochilarium is richly infused with chemosensory and tactile receptors along its edge. A pair of maxillary glands, also called nephridial organs, involved in osmoregulation and excreting nitrogenous waste open up to the gnathochilarium and wastes are passed entirely through the digestive tract before … See more In arthropods, the maxillae (singular maxilla) are paired structures present on the head as mouthparts in members of the clade Mandibulata, used for tasting and manipulating food. Embryologically, the maxillae are … See more The generalized condition in hexapods is for the first pair of maxillae to consist of a basal triangular sclerite called the cardo and a large central sclerite called the stipes from which arise three processes: the lacinia, the galea and the maxillary palp. The lacinia is … See more Millipedes In millipedes, the second maxillae have been lost, reducing the mouthparts to only the first maxillae which have fused together to form a gnathochilarium, acting as a lower lip to the buccal cavity and the mandibles which … See more In crustaceans, the two pairs of maxillae are called maxillulae (1st pair) and maxillae (2nd pair). They serve to transport food to the mandibles but also frequently help in … See more WebThe phylogenetic interpretation of the gnathochilarium has been especially criticized due to the poorly understood evolution of its components since no hypothesis of homology has … blk 308c anchorvale road