Insect morphology least three different positions: prognathous, opisthognathous, and hypognathous. In species with prognathous articulation, the head is positioned vertically aligned with the body, such as species of Formicidae; while in a hypognathous type, the head is aligned horizontally adjacent to the body. An opisthognathous head is positioned diagonally, such as species of Blattodea and some Coleoptera. The mouthparts vary greatly between insects of different orders, but the two main functional groups are mandibulate and haustellate. Haustellate mouthparts are used for sucking liquids and can be further classified by the presence of stylets, which include piercing-sucking, sponging, and siphoning. The stylets are
Phrase name as a location or distinctive morphological characteristic. A phrase name is used for an unnamed taxon, which may or may not have already been formally described, but only for as long as no scientific name has been chosen for it; afterwards it may be listed as a synonym, Phrase name In Australian botany, a phrase name is an informal name given to a plant taxon that has not yet been given a formal scientific name. The term was adopted in 1992 by the Australian Herbarium Information Systems Committee. The species phrase name consists of four components — the generic name,