Laterosternal shelf area of females of Attaphila species, ventral view, posteriorly on top. A, B: A. aptera (Bo 1225, Bo 1257), in A left tube distorted (ventral part of tube squeezed laterally, as indicated by grey arrow). C, D: A. bergi (Bo 1282, Bo 1239). E, F: A. fungicola (Bo 1264, Bo 1447). G: A. multisetosa (HT Bo 1270). H: A. paucisetosa (PT Bo 1255). I: A. sexdentis (HT Bo 1233). J: A. schuppi (ST Bo 1237). K, L: A. sinuosocarinata (HT Bo 1273, PT Bo 1288). ― Abbreviations: isf intersternal folds (of floor of vestibulum); ls laterosternal-shelf sclerite (with central part c, arm part a, wing part w, posterolateral extremity p); lst laterosternal-shelf tube; vfl floor of vestibulum. (See Supplement 3 Fig. S2D, E for more complete labeling using different terminologies.) ― Arrows: Black arrows in A, D, I: twisting of sclerite at transition between ls-w and ls-p. Grey arrow in A indicates direction of squeezing of tube lst. Blue arrowheads: anterior extremity of wing part ls-w on mesal border of tube lst, ls-w either restricted to posterior half of tubes lst (e.g. K) or reaching far into anterior half (e.g. D). Red arrowheads: area where the posterior margin of ls-a bends dorsally, and where a bend or kink is often present in (inner) lateral border of tube lst (compare white arrowheads in Fig. 23C, D, H, I, J). Black arrowheads: membranous inner lateral border of tube lst posterior to the bend or kink (compare Fig. 23C, D, H, I and black arrowheads in sections beside D). — Inserts in B, D, E, K showing right (of picture and animal) tube lst with posterior margin of ls-a (red line; compare Fig. 23C–E) and anterior margin of ls-w (blue line; compare Fig. 23F, G).