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| Term | embryonic/larval anterior spiracle | ID (Ontology) | FBbt:00000407 (Fly Anatomy) | |||||||||||||||||||||||||||||||||||
| Definition | 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.[ FlyBase:FBrf0034081 FlyBase:FBrf0064787 ] | |||||||||||||||||||||||||||||||||||||
| Also Known As | "larval anterior spiracle" | |||||||||||||||||||||||||||||||||||||
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Full annotation statements including this term (annotations to child terms are NOT included), and relevant FlyBase records
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thoracic segment |__prothoracic segment________ larval tracheal system | |__embryonic/larval spiracle__| spiracle | |__embryonic/larval spiracle__| embryonic/larval anterior spiracle 100 rec. |__anterior spiracle retractor muscle 2 rec. | |__anterior spiracle retractor muscle cell 2 rec. |__anterior spiracular gland 2 rec. |__anterior spiracular scar |__papilla of larval anterior spiracle 7 rec. |
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Relationships
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| Is a | embryonic/larval spiracle | ||
| Develops from | anterior spiracle primordium | ||
| Part of | prothoracic segment | ||
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Synonyms & Secondary IDs
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External Crossreferences & Linkouts
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