part_of part of immediately preceded by starts_at_end_of occurrent L4 larva Ce L4.0 larva Ce L4.1 larva Ce worm_development The second sub-stage of the L4 larva. The inner cells of the vulva have finished migrating and have formed toroids, but have not fused. vulC and vulF have divided and a narrow lumen has formed. At 20 Centigrade: 35.1 hours after hatching, 1.1 hours from the L3-to-L4 molt. WBls:0000684 2015-06-03T09:06:19Z danielaraciti L4.1 larva C. elegans life stage occurring during L4 larval stage