embryonic/larval anterior spiracle [FBbt_00000407]
Embryonic/larval spiracle housed in a protrusion of the prothoracic segment. These spiracles only become functional in the second instar when the spiracle has a club-like structure with eight lobes. A fine thread from the anterior spiracular gland is associated with each of the lobes. Late in the second instar, 8 protruding branches (papillae) develop around this club like structure, these become the spiracular ducts of the third instar spiracle, each with a spiracular opening. (Whitten, 1980, Manning and Krasnow, 1993)
embryonic/larval anterior spiracle
ID: FBbt_00000407
Anatomy Larva
Embryonic/larval spiracle housed in a protrusion of the prothoracic segment. These spiracles only become functional in the second instar when the spiracle has a club-like structure with eight lobes. A fine thread from the anterior spiracular gland is associated with each of the lobes. Late in the second instar, 8 protruding branches (papillae) develop around this club like structure, these become the spiracular ducts of the third instar spiracle, each with a spiracular opening. (Whitten, 1980, Manning and Krasnow, 1993)
Open in VFB 3D Browser →Classification
Relationships
- develops from: anterior spiracle primordium
- is part of: prothoracic segment
Alternative Names
| Synonym | Scope | Reference |
|---|---|---|
| larval anterior spiracle | exact synonym |
Parts of embryonic/larval anterior spiracle (5 total)
| Thumbnail | Name | Tags |
|---|---|---|
| anterior spiracle retractor muscle cell | Larva, Muscle | |
| anterior spiracle retractor muscle | Larva, Muscle | |
| anterior spiracular gland | Anatomy, Larva | |
| anterior spiracular scar | Anatomy, Larva | |
| papilla of larval anterior spiracle | Anatomy, Larva |
References
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