substage_of
immediately_preceded_by
immediately preceded by
starts_at_end_of
immediately preceded by
immediately_precedes
immediately precedes
larval stage
first instar larval stage
second instar larval stage
L2
FlyBase_development_CV
second instar larva
FBdv:00005338
Temporal ordering number - 420.
The second larval instar begins at the first larval molt and ends at the second larval molt. Larvae are actively feeding and crawling in the food. Distinct anterior spiracles are present as enlargements at the end of the tracheal trunk, but not open to the outside; posterior spiracles have three openings each, and four groups of small unbranched hairs. The salivary glands extend to the first abdominal segment, and have cells that are uniform in size. Mouth hooks typically have two or three teeth. Duration at 25 degrees C: approximately 23 hours (49-72 hours after egg laying; 25-48 hours after hatching).
UBERON:8000001
third instar larval stage
life stage