Hippodamia convergens , fourth larval instar: (31) head, dorsal view; (32) mandible; (33) antenna; (34) stemmata; (35) maxillary palpus; (36) labial palpus; (37) tarsal claw; (38) mesothoracic spiracle; (39) abdominal spiracle. Scale bars: 31 = 200 µm; 32, 34, 37 = 100 µm; 33, 36, 38, 39 = 20 µm; 35 = 50 µm.