FIGURES 189–191 in The immatures of lauxaniid flies (Diptera: Lauxaniidae) and their taxonomical implications

FIGURES 189–191. Cephaloskeletons of second larval instar, dorsal (top), lateral (middle) and ventral (bottom) view. 189. Sapromyza intonsa. 190. S. sexpunctata. 191. Sapromyzosoma quadricincta. a, apodeme of ventral cornu; c, cibarium; db, dorsal bridge; dc, dorsal cornua; es, epistomal sclerite; is, intermediate sclerite; lb, labrum; ls, ligulate sclerite; mh, mouth hook; pb, parastomal bar; r, rami; ss, subhypostomal sclerite; vb, ventral bridge; vc, ventral cornua; vp, vertical plate.