FIGURE 13 in Megalomma Johansson, 1925 (Polychaeta: Sabellidae) from America and other world-wide localities, and phylogenetic relationships within the genus 2861

FIGURE 13. Selected structures of Megalomma species. A, D, G, R) Thorax, lateral views; B, F, O–P) thorax, dorsal views; C, H, Q) thorax, ventral views; E) dorsalmost radiolar eye; I, K) eyes from ventral radioles; J) eye from lateral radiole; L) thoracic uncinus; M) abdominal uncinus; N) companion chaetae. A–E) Megalomma gesae Knight-Jones, 1997; F–N) Megalomma heterops Perkins, 1984; O–R) Megalomma lanigera (Grube, 1846). A–E) Paratype from El Salvador, ZMH, 15245; F–N) modified from Perkins, 1984; O–R) specimens from Naples, MCZ, 1517. Abbreviations: apr anterior peristomial ring; vs ventral sacs; vbf ventral basal flange. Scale bars: A–D) 0.5 mm; E) 0.25 mm; F–N) not scaled; O–P) 2 mm.