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103 results for “Avicularia”
Figure 5A-C in Silks and silk-producing organs of Neotropical tarantula Avicularia metallica (Araneae, Mygalomorphae, Theraphosidae)
Figure 5A-C. Spinneret silk spigot ultrastructure: A – two spigots of posterior lateral spinnerets. B – enlarged view of framed section in A: opening at the end of shaft, from which silk secretion is extruded, C – opening at the end of shaft, filled with solidified silk secretion. The secretion has two components. Peripheral (S1) component of solidified protein mixture surrounds the central (S2) component, which unlike component S1, has a granular appearance. SPI – spigots, bas – basal part (socket), term – terminal part of spigot (shaft).
Figure 2A-B in Silks and silk-producing organs of Neotropical tarantula Avicularia metallica (Araneae, Mygalomorphae, Theraphosidae)
Figure 2A-B. Macrostructure of shelter and attachment fields: A – mid-section of silken tube. Arrows indicate where the tube is attached to the substratum by means of attachment fields (AF). B – detailed view of an attachment field.
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.
Figure 1A-B in Silks and silk-producing organs of Neotropical tarantula Avicularia metallica (Araneae, Mygalomorphae, Theraphosidae)
Figure 1A-B. Adult female Avicularia metallica: A – a female sitting on a leaf of Dwarf Cavendish banana Musa acuminata. B – the same female kept inside a glass insectarium. The female leans against the glass wall both with its feet and spinnerets at the end of its opisthosoma. SP – spinnerets, I. – IV. – first to fourth pairs of legs.
Figure 3 in Silks and silk-producing organs of Neotropical tarantula Avicularia metallica (Araneae, Mygalomorphae, Theraphosidae)
Figure 3. Entrance into the shelter. AF – attachment fields, CF – connecting fibers, EO – entry opening, TU – tube.
Figure 8A-D in Silks and silk-producing organs of Neotropical tarantula Avicularia metallica (Araneae, Mygalomorphae, Theraphosidae)
Figure 8A-D. Amorphous and fibrous structures in attachment fields: A – Spot of amorphous (i.e. nongranular) secretion on the surface of plastic wall with fibrils of various lengths leading from it in numerous places. B – enlarged view of framed section in A. C – Detailed view of surface of the spot. Granular secretion in center of image is the main structural material of a fibril. D – detailed view of fibril (150–170 nm in diameter) with characteristic globular ultrastructure, formed on the underlying layer of nongranular component of silken spot. GS – granular secretion, NGS – nongranular secretion, NF – nanofibril.
Figure 7A-C in Silks and silk-producing organs of Neotropical tarantula Avicularia metallica (Araneae, Mygalomorphae, Theraphosidae)
Figure 7A-C. SEM micrographs of attachment field silk: A – Cut-out section of plastic container, covered with silk of attachment fields – AFS. Places with the highest concentration of nanofibrils appear in the image as whitish spots without clear borders. This silk constitutes an adhesive foundation layer onto which the spider attaches connecting fibers, B – attachment of a connecting fiber (CF) to the substratum covered with adhesive silk. Before joining with the silk of attachment fields, the thick connecting fibers ramify into several thinner fibers with fewer nanofibrils. As the fibers progressively ramify before they are anchored in the AFS-covered substratum, the bundles become gradually less compact until separate nanofibrils remain. C – enlarged view of framed section in B.
Figure 9A-B in Silks and silk-producing organs of Neotropical tarantula Avicularia metallica (Araneae, Mygalomorphae, Theraphosidae)
Figure 9A-B. Connection between nongranular silken secretion and fibrils: A – Solidified drop of amorphous secretion joined with fibrils. B – enlarged view of ultrastructure of silk where the two types of secretion connect.
Figure 2. A in First record of parasitism in Avicularia purpurea Kirk, 1990 (Araneae: Theraphosidae: Aviculariinae) by Notocyphus aff. tyrannicus Smith, 1855 (Hymenoptera: Notocyphinae) in the Ecuadorian Amazon
Figure 2. A. Localities of A. purpurea in Ecuador. B. Juvenile individual of A. purpurea that presented the parasitic larvae of Notocyphus aff. tyrannicus. C. Live adult of N. aff. tyrannicus. Scale bar: 1 cm.
Figure 3. A in First record of parasitism in Avicularia purpurea Kirk, 1990 (Araneae: Theraphosidae: Aviculariinae) by Notocyphus aff. tyrannicus Smith, 1855 (Hymenoptera: Notocyphinae) in the Ecuadorian Amazon
Figure 3. A. Dorsal view of N. aff. tyrannicus. B. Front view. C. Side view. D. Cocoon of N. aff. tyrannicus. E. Silk shelter made by A. purpurea, note the cocoon at one end. F. Wing detail of N. aff. tyrannicus. Scale bar: 1 cm.
Figure 1 in First record of parasitism in Avicularia purpurea Kirk, 1990 (Araneae: Theraphosidae: Aviculariinae) by Notocyphus aff. tyrannicus Smith, 1855 (Hymenoptera: Notocyphinae) in the Ecuadorian Amazon
Figure 1. Locality where the specimen of A. purpurea parasitized by Notocyphus af. tyrannicus was collected. / Localidad de recolección del especímen de A. purpurea parasitado por Notocyphus af. tyrannicus.
Figure 66. Cicurina avicularia Li in New cave-dwelling spiders of the family Dictynidae (Arachnida: Araneae) from Guangxi and Guizhou, China
Figure 66. Cicurina avicularia Li, sp. nov. A–D. Paratype, female. E. Holotype, male, habitus, dorsal view. A. Epigynum, ventral view. B. Vulva, dorsal view. C. Habitus, dorsal view. D. Habitus, ventral view. Scale bars: A–B = 0.05 mm; C–E = 0.5 mm.
Figure 65. Cicurina avicularia Li in New cave-dwelling spiders of the family Dictynidae (Arachnida: Araneae) from Guangxi and Guizhou, China
Figure 65. Cicurina avicularia Li, sp. nov., holotype, male. A. Palp bulb, ventral view. B. Left pedipalpus, ventral view. C. Left pedipalpus, prolateral view. D. Left pedipalpus, retrolateral view. Scale bars = 0.1 mm.
Figure 64. Cicurina avicularia Li in New cave-dwelling spiders of the family Dictynidae (Arachnida: Araneae) from Guangxi and Guizhou, China
Figure 64. Cicurina avicularia Li, sp. nov., paratype, female. A. Vulva, dorsal view. B. Epigynum, ventral view. Scale bars = 0.05 mm.
Figure 62. Cicurina avicularia Li in New cave-dwelling spiders of the family Dictynidae (Arachnida: Araneae) from Guangxi and Guizhou, China
Figure 62. Cicurina avicularia Li, sp. nov., holotype, male. A. Left pedipalpus, prolateral view. B. Left pedipalpus, retrolateral view. Scale bar = 0.1 mm.
Figure 63. Cicurina avicularia Li in New cave-dwelling spiders of the family Dictynidae (Arachnida: Araneae) from Guangxi and Guizhou, China
Figure 63. Cicurina avicularia Li, sp. nov., holotype, male. A. Left pedipalpus, ventral view. B. Palp bulb, ventral view. Scale bars = 0.1 mm.
FIGURES 5 in Description of two new species of Avicularia Lamarck 1818 and redescription of Avicularia diversipes (C. L. Koch 1842) (Araneae, Theraphosidae, Aviculariinae) — three possibly threatened Brazilian species
FIGURES 5─8. Avicularia sooretama sp. nov. 5─7 Male holotype, left palpal bulb (MNRJ 18435). 5, prolateral, 6, retrolateral, 7, frontal. 8 Female paratype (MNRJ 12930), spermathecae, dorsal. Scale bar = 1mm.
FIGURE 17 in Description of two new species of Avicularia Lamarck 1818 and redescription of Avicularia diversipes (C. L. Koch 1842) (Araneae, Theraphosidae, Aviculariinae) — three possibly threatened Brazilian species
FIGURE 17. Map showing records of A. diversipes, A. sooretama sp. nov. and A. gamba sp. nov. on northestern and southeastern Brazil. Square = A. diversipes; triangle = A. sooretama sp. nov., star = A. gamba sp. nov. The gray area represents the approximate original distribution of Brazilian Atlantic Rainforest.
FIGURES 1 in Description of two new species of Avicularia Lamarck 1818 and redescription of Avicularia diversipes (C. L. Koch 1842) (Araneae, Theraphosidae, Aviculariinae) — three possibly threatened Brazilian species
FIGURES 1─4. Avicularia diversipes. 1─3 Male left palpal bulb (IBSP 119271). 1, prolateral, 2, retrolateral, 3, frontal. 4, Female spermatheca (IBSP 11754) dorsal. Scale bar = 1mm.
FIGURES 13 in Description of two new species of Avicularia Lamarck 1818 and redescription of Avicularia diversipes (C. L. Koch 1842) (Araneae, Theraphosidae, Aviculariinae) — three possibly threatened Brazilian species
FIGURES 13─16. Habits.13─15 Avicularia diversipes adult female 13, Resting on a heliconid leaf. 14, Inside her retreat on a tree. 15, In a bromeliad. 16, Avicularia gamba sp. nov. juvenile inside its retreat on a tree. 13─15 from CEPLAC, Ilhéus, Bahia, Brazil. 16 from Elísio Medrado, Bahia, Brazil. Photos: 13, 14 G. Puorto, 15 C. Jared, 16 C.S. Fukushima.
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