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. 2013 Jul 11;9(7):e1003620. doi: 10.1371/journal.pgen.1003620

Figure 1. Scanning electron micrographs of the proboscis of Heliconius butterflies.

Figure 1

(A) The labial palps (lp) and proboscis (p) of the H. erato head contain gustatory sensilla. (B) The proximal portion of the H. melpomene proboscis has hair-like sensilla chaetica (sc). (C) The tip portion of the proboscis has specialized ridges for pollen collection along with sensilla styloconica (ss). Reproduced with permission [9]. (D) H. melpomene with a pollen-load. c, clypeus, ce, compound eye; pr, proximal region; mr, mid region; tr, tip region; dgl, dorsal galeal linking structures; sb, blunt-tipped sensilla.