WebbProthoracic gland. The prothoracic glands are either of a pair of endocrine glands located in the prothorax of certain insects that regulate molting. They have an ectodermal origin and secrete ecdysteroids, such as ecdysone and 20-hydroxyecdysone. The chemical formula of ecodysin hormone is ( C27H44O6 ). [1] They usually disappear in adults. WebbThe thorax is a tagma componed o three sections, the prothorax, mesothorax an the metathorax. The anterior segment, nearest tae the heid, is the prothorax, wi the major featurs bein the first pair o legs an the pronotum. The middle segment is the mesothorax, wi the major featurs bein the seicont pair o legs an the anterior weengs.
Prothorax - Wikipedia
WebbThe thorax is the midsection ( tagma) of the hexapod body ( insects and entognathans ). It holds the head, legs, wings and abdomen. It is also called mesosoma or cephalothorax in other arthropods. It is formed by the prothorax, mesothorax and metathorax and comprises the scutellum; the cervix, a membrane that separates the head from the thorax ... WebbProthorax är det främsta av de tre segmenten i insekternas mellankropp. Det främsta benparet hör till detta segment. Ingen insektsart har vingar på prothorax, men några … the gap band genre
Insect ecology - en-academic.com
The prothorax is the foremost of the three segments in the thorax of an insect, and bears the first pair of legs. Its principal sclerites (exoskeletal plates) are the pronotum (dorsal), the prosternum (ventral), and the propleuron (lateral) on each side. The prothorax never bears wings in extant insects (except in some cases of atavism), though some fossil groups possessed wing-like projections… WebbStickmyggor, Culicidae, är en familj i underordningen myggor (Nematocera) som i sin tur tillhör ordningen tvåvingar (Diptera). I familjen finns ungefär 35 till 40 släkten med tillsammans cirka 3 500 arter. [ 2][ 3] I Europa finns cirka etthundra arter [ 4] och i Sverige 50 arter [ 5][ 6] . WebbThe insect thorax has three segments: the prothorax, mesothorax, and metathorax. The anterior segment, closest to the head, is the prothorax; its major features are the first … the american dream by amy h. wichita