Sicarius crustosus, (NICOLET, 1849)

Figure 4. Scanning electronic microscopy of structures associated to appendages. A, B, Sicarius fumosus (Nicolet, 1849) male, right leg II (IBSP 163716). A, leg tip, retrolateral. B, tibial base, ventral. Note modified setae (top inset) and chemosensory setae (bottom inset). C, D, Sicarius crustosus (Nicolet, 1849), female, right leg II (MACN 30189). C, femur, dorsal surface. D, tibia, prolateral. Arrows to rows of macrosetae (only five out of eight are visible). Notice that only the ventralmost bear longer, spiniform macrosetae. CBM, club-shaped macrosetae; M, tibial macrosetae; S, particle-adhering setae. Scale bars, A–B = 0.1 mm; C, 0.2 mm; D, 1 mm.

Figure 10. Scanning electron microscopy, Sicarius crustosus (Nicolet, 1849), female (MACN 30189), spinnerets, setae removed from the left side. A, spinnerets, ventral view. B, anterior lateral spinnerets, ventro-posterior view. Inset shows detail of putative major ampullate gland spigot. C, posterior median spinnerets, ventro-posterior view. D, posterior lateral spinnerets, ventral view. Ac, aciniform gland spigots; ALS, anterior lateral spinnerets; AT, anal tubercle; MAP, putative major ampullate gland spigot; Pi, piriform gland spigots; PLS, posterior lateral spinnerets; PMS, posterior median spinnerets. Scale bars = 0.1 mm.

Figure 30. Male Sicarius, sternum in ventral view. A, S. thomisoides Walckenaer, 1847 from Iquique, Chile (IBSP). B, S. yurensis Strand, 1908 stat. nov. from Yura, Peru (AMNH). C, Sicarius levii sp. nov. from Tucuman, Argentina (AMNH). D, Sicarius crustosus (Nicolet, 1849) from Paposo, Chile (AMNH). Scale bars = 1 mm.

Figure 40. Femur I, dorsal macrosetae, anterior view. A, Sicarius lanuginosus (Nicolet, 1849), male. B, Sicarius fumosus (Nicolet, 1849), male. C, Sicarius crustosus (Nicolet, 1849), male. D, Sicarius crustosus (Nicolet, 1849), female. Note sexual dimorphism in S. crustosus, absent in other species. Scale bar, 0.1 mm.

Figure 41. Sicarius crustosus (Nicolet, 1849) from Chile. A–C, male genitalia in prolateral view; D–I, female genitalia, digested. A, Paposo, Antofagasta (AMNH). B, same, cymbium and bulb. C, Paposo, Antofagasta (AMNH). D, Paposo, Antofagasta (AMNH), dorsal. E, same, ventral. F, Rodillo, Atacama (LEULS), dorsal. G, same, ventral. H, Copiapo, Atacama (AMNH), dorsal. I, same, ventral. Abbreviation: VB, ventral branch. Scale bars = 0.1 mm (except A, 1 mm).