Fig. 4

Expression of hth paralogs in the prosomal appendages of Parasteatoda tepidariorum. a-f Expression of Pt-hth1 is shown in the panels on the left side. g-o Expression of Pt-hth2 is shown in the panels on the right side in the figure. The top row of panels shows dissected chelicerae (che) (a, g) at early inversion, (h) late inversion, and (b, i) dorsal closure, the center row shows dissected pedipalps (ped) (c, j) at early inversion, (k) late inversion and (d, l) dorsal closure, and the bottom row shows dissected walking legs (e, m) at early inversion, (n) late inversion, and (f, o) dorsal closure. The asterisks in (j-o) denote distal expression rings (one in the pedipalps, two in the leg). The arrows in (k, l, n, o) denote an additional medial ring