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.
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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.

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## Classification

Relationships

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

View all 5 results in VFB →

Expression patterns overlapping embryonic/larval anterior spiracle (18 total)

Thumbnail Name Tags
P{Ddc-lacZ.be1} expression pattern Expression_pattern
P{GAL4-per.BS} expression pattern Expression_pattern
P{GawB}c649 expression pattern Expression_pattern
P{PZ}Nup154[01501] expression pattern Expression_pattern
P{GAL4}C-70 expression pattern Expression_pattern

View all 18 results in VFB →