Figure 4A-D in Silks and silk-producing organs of Neotropical tarantula Avicularia metallica (Araneae, Mygalomorphae, Theraphosidae)

Figure 4A-D. SEM micrographs of spinnerets: A – overview of ventral side of a nymph. B – enlarged view of framed section in A: posterior part of ventral side of opisthosoma with two pairs of spinnerets. C – surface of posterior lateral spinnerets with spigots, partly covered by adjacent hairs (setae). Location of spigots is marked with arrows. D – detailed view of surface of spinnerets with spigots, hairs and silk fibrils. CH – chelicerae, HA – hairs, PE – pedipalps, PMS – posterior median spinnerets, PLS – posterior lateral spinnerets, SI – silk, SP – spinnerets, SPI – spigots, I. – IV. – first to fourth pairs of legs.