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22 results for “Stedocys”
FIGURES 37–41 in The Southeast Asian genus Stedocys Ono, 1995 (Araneae: Scytodidae): first descriptions of female genitalia and a new species from China
FIGURES 37–41. Stedocys leopoldi (Giltay) (MACN-Ar 23714, MR0486). 37, 39. Vulva. (37 dorsal, 39 ventral view). 38, 40–41. Right spermathecae close. (38 dorsal, 40 ventral, 41 pore detail, lateral view) (EP, epyginal pouch, GD, gland ductules; IS, inner spermathecae; OS, outer spermathecae). Scale bars: 37, 39 200 µm; 38, 40–41 100 µm.
FIGURES 31–36 in The Southeast Asian genus Stedocys Ono, 1995 (Araneae: Scytodidae): first descriptions of female genitalia and a new species from China
FIGURES 31–36. Stedocys leopoldi (Giltay) (31–34 Male MACN-Ar 23713, MR0484, 35–36 Female MACN-Ar 23714, MR0486). 31 Spinnerets field, posterior-ventral view. 32, 33, 35. ALS (32 left, MAP detail, 33, 35 right field) 34, 36. PMS-PLS (34 right, mesal view, 36 Left field) (MAP, major ampullate gland spigot; PI, piriform gland spigot; AC, aciniform gland spigot; numbers, ALS articles; arrows, PMS spicules). Scale bars: 31 200 µm; 33–36, 50 µm; 32 20 µm.
FIGURES 25–30. 25–29 in The Southeast Asian genus Stedocys Ono, 1995 (Araneae: Scytodidae): first descriptions of female genitalia and a new species from China
FIGURES 25–30. 25–29. Stedocys leopoldi (Giltay) (25–28 Female MACN-Ar 23714, MR0486, 29 MACN-Ar, MR0484). 30. Scytodes globula Nicolet (MACN-Ar, ARAMR000558). 25. Left tarsal organ IV. 26. Right metatarsal I trichobothria. 27–28. Left palp (27 tarsus apical, 28 femur prolateral). 29–30. Male left palp (29 retrolateral, 30 apical) (Th, thorn; BM, blunt macrosetae; E, embolus; B, bulb). Scale bars: 29–30, 500 µm; 28, 100 µm; 25, 50 µm; 25–26, 20 µm.
FIGURES 21–24 in The Southeast Asian genus Stedocys Ono, 1995 (Araneae: Scytodidae): first descriptions of female genitalia and a new species from China
FIGURES 21–24. Stedocys leopoldi (Giltay) (MACN-Ar 23714, MR0486), female right legs. 21–22. Claws I (21 retrolateral-apical, 22 retrolateral view). 23–24 Claws IV (23 retrolateral-apical, 24 apical view) (BPC, bipectinated proclaw; Ony, onychium; PC, proclaw; RC, retroclaw). Scale bars: 21–24 100 µm.
FIGURES 15–20 in The Southeast Asian genus Stedocys Ono, 1995 (Araneae: Scytodidae): first descriptions of female genitalia and a new species from China
FIGURES 15–20. Stedocys leopoldi (Giltay) (15–19 MACN-Ar 23714, MR0486; 20 MACN-Ar 23713, MR0484). 15– 19 Female left chelicerae (15 anterior, 16 promargin, 17 posterior, 18 retromargin, 19 ectal view). 20. Male epiandrum, ventral view (ML, membranous lobe; CG, cheliceral gland; CL, cheliceral lamina; SF, stridulatory field). Scale bars: 15, 17, 19 200µm; 16, 20 100 µm; 18 50 µm.
FIGURES 10–14 in The Southeast Asian genus Stedocys Ono, 1995 (Araneae: Scytodidae): first descriptions of female genitalia and a new species from China
FIGURES 10–14. Genitalia and tracheal system. Stedocys leopoldi (Giltay) (10 MACN-Ar 23713, MR0484; 12–13 MACN-Ar 23718, TP0979). Stedocys pagodas n. sp. (11 holotype, CASENT 9021385; 14 paratype, CASENT 9021385). 10—11 Male palp, retrolateral view (10 right -image inverted-, 11 left). 12 Female tracheae dorsal view. 13— 14 Female vulva dorsal view. (E, embolus; SC, spermatic canal; B, bulb; T, tibia; Ta, tarsus; BA, blunt apically; EF, epigastric furrow; IS, inner spermathecae; OS, outer spermathecae). Scale bars: 10–14, 500 µm.
FIGURES 1–9 in The Southeast Asian genus Stedocys Ono, 1995 (Araneae: Scytodidae): first descriptions of female genitalia and a new species from China
FIGURES 1–9. Preserved specimens. Stedocys leopoldi (Giltay). Male (1, 5 MACN-Ar 23713, MR0484). Female (2, 6 MACN-Ar, TP0979; 9 MACN-Ar 23714, MR0486). Stedocys pagodas n. sp. Male (3, 7 type, CASENT 9021385). Female (4, 8 paratype, CASENT 9021385). 1–8 Prosoma (1–4 dorsal view, 5–8 ventral view). 9. External genitalia (EP, epyginal pouch; EF, epigastric furrow). Scale bars: 1–7, 2 mm; 8, 1 mm; 9, 0.5 mm.
FIGURES 42–47 in The Southeast Asian genus Stedocys Ono, 1995 (Araneae: Scytodidae): first descriptions of female genitalia and a new species from China
FIGURES 42–47. Stedocys leopoldi (Giltay) (42, 44 Female MACN-Ar 23714, MR0486; 46 Male MACN-Ar 23713, MR0484). Scytodes globula Nicolet (43, 45 Female MACN-Ar 10789, 47 male MACN-Ar, ARAMR000558). 42–43 Left chelicerae, apical view. 44–47 Colulus (44 right lateral, 45 ventral-posterior, 46, 47 ventral) (VO, venom outlet; CP, cololus projection). Scale bars: 44–46 200 µm; 42–43 100 µm; 47 50 µm.
FIGURE 31. Female external genitalia. A. Periegops suteri. B. Drymusa capensis. C. Scytodes globula. D. Stedocys leopoldi. E. Loxosceles rufescens. F. Drymusa rengan. A–F in The placement of the spider genus Periegops and the phylogeny of Scytodoidea (Araneae: Araneomorphae)
FIGURE 31. Female external genitalia. A. Periegops suteri. B. Drymusa capensis. C. Scytodes globula. D. Stedocys leopoldi. E. Loxosceles rufescens. F. Drymusa rengan. A–F. Ventral view. Scales: A–F 500 µm. Abbreviations: EF, epigastric furrow; pF, posepigastric foveae.
FIGURE 30. Female genitalia. A–B. Stedocys leopoldi. C–D. Loxosceles rufescens. E. B. Sicarius rupestris. A, C, E. Dorsal view. B– D in The placement of the spider genus Periegops and the phylogeny of Scytodoidea (Araneae: Araneomorphae)
FIGURE 30. Female genitalia. A–B. Stedocys leopoldi. C–D. Loxosceles rufescens. E. B. Sicarius rupestris. A, C, E. Dorsal view. B– D. Right receptaculum, closeup, lateral view. (B, mirrored). Scales: A, E 200 µm, B, D 100 µm, C 500 µm. Abbreviations: IS, inner spermatheca; OS; outer spermatheca; S, spermatheca.
FIGURE 25. Stedocys leopoldi, spinnerets. A–D. Male. E–F. Female. A in The placement of the spider genus Periegops and the phylogeny of Scytodoidea (Araneae: Araneomorphae)
FIGURE 25. Stedocys leopoldi, spinnerets. A–D. Male. E–F. Female. A. Spinnerets, posterior-ventral view, numbers on ALS articles (character 67). B. Left ALS, MAP area. C. Right ALS. D. Right PLS–PMS. E. Right ALS. F. Left PMS–PLS. Scales: A 200 µm, B 20 µm, C–F 50 µm. Abbreviations: AC, aciniform gland spigot; MAP, major ampullate gland spigot; mS, PMS median spicules (character 77); PI, piriform gland spigot.
FIGURE 20. Male epiandrium. A. Periegops suteri. B. Scytodes globula. C. Stedocys leopoldi. D–E. Loxosceles rufescens. F. Sicarius rupestris. A–D. Ventral view. E. Anterior. F in The placement of the spider genus Periegops and the phylogeny of Scytodoidea (Araneae: Araneomorphae)
FIGURE 20. Male epiandrium. A. Periegops suteri. B. Scytodes globula. C. Stedocys leopoldi. D–E. Loxosceles rufescens. F. Sicarius rupestris. A–D. Ventral view. E. Anterior. F. Lateral, right. Scales: A–C, F 100 µm, D–E 50 µm.
FIGURE 18. Cheliceral retromargin, posterior view. A. Periegops suteri. B. Drymusa capensis. C. Scytodes globula. D. Stedocys leopoldi. E. Loxosceles rufescens. F in The placement of the spider genus Periegops and the phylogeny of Scytodoidea (Araneae: Araneomorphae)
FIGURE 18. Cheliceral retromargin, posterior view. A. Periegops suteri. B. Drymusa capensis. C. Scytodes globula. D. Stedocys leopoldi. E. Loxosceles rufescens. F. Sicarius rupestris, mirrored. Scales: A–B, F 500 µm, C, E 100 µm, D 50 µm. Abbreviation: Vo, venom outlet (character 35).
FIGURE 15. Cheliceral promargin, anterior view. A. Periegops suteri. B. Drymusa capensis. C. Scytodes globula. D. Stedocys leopoldi. E. Loxosceles rufescens. F. Sicarius rupestris, mirrored. A–B, E–F in The placement of the spider genus Periegops and the phylogeny of Scytodoidea (Araneae: Araneomorphae)
FIGURE 15. Cheliceral promargin, anterior view. A. Periegops suteri. B. Drymusa capensis. C. Scytodes globula. D. Stedocys leopoldi. E. Loxosceles rufescens. F. Sicarius rupestris, mirrored. A–B, E–F. Inset showing row of modified setae against promarginal lobe base (character 30). Scales: A–B, F 500 µm, C 50 µm, D–E 100 µm. Abbreviations: pL, promarginal lobe (character 28); pT, cheliceral promarginal tooth (character 24); Vo, venom outlet (character 35).
FIGURE 14. Chelicerae, anterior view. A. Periegops suteri. B. Drymusa capensis. C. Scytodes globula. D. Stedocys leopoldi. E. Loxosceles rufescens. F in The placement of the spider genus Periegops and the phylogeny of Scytodoidea (Araneae: Araneomorphae)
FIGURE 14. Chelicerae, anterior view. A. Periegops suteri. B. Drymusa capensis. C. Scytodes globula. D. Stedocys leopoldi. E. Loxosceles rufescens. F. Sicarius rupestris, mirrored. Scales: A–B, F 500 µm, C–E 200 µm.
FIGURE 10. Female leg tarsal organ. A. Periegops suteri, tarsus I. B. Drymusa capensis, tarsus IV. C. Scytodes globula, tarsus I. D. Stedocys leopoldi, tarsus IV. E. Loxosceles rufescens, tarsus I. F. Sicarius rupestris, tarsus IV in The placement of the spider genus Periegops and the phylogeny of Scytodoidea (Araneae: Araneomorphae)
FIGURE 10. Female leg tarsal organ. A. Periegops suteri, tarsus I. B. Drymusa capensis, tarsus IV. C. Scytodes globula, tarsus I. D. Stedocys leopoldi, tarsus IV. E. Loxosceles rufescens, tarsus I. F. Sicarius rupestris, tarsus IV. Scales: A, C–D 20 µm, B, E–F 10 µm.
FIGURE 9. Female leg trichobothria. A. Periegops suteri, tibia I. B. Drymusa capensis, metatarsus I. C. Scytodes globula, metatarsus IV. D. Stedocys leopoldi, metatarsus I. E. Loxosceles rufescens, metatarsus I. F. Sicarius rupestris, metatarsus IV in The placement of the spider genus Periegops and the phylogeny of Scytodoidea (Araneae: Araneomorphae)
FIGURE 9. Female leg trichobothria. A. Periegops suteri, tibia I. B. Drymusa capensis, metatarsus I. C. Scytodes globula, metatarsus IV. D. Stedocys leopoldi, metatarsus I. E. Loxosceles rufescens, metatarsus I. F. Sicarius rupestris, metatarsus IV. Scales: A 10 µm, B 50 µm, C–F 20 µm.
Data from: Cave Stedocys spitting spiders illuminate the history of the Himalayas and Southeast Asia
Stedocys spitting spiders (Araneae: Scytodidae) inhabit subterranean environments and have poor dispersal abilities. The Cenozoic Indian–Eurasian collision affected the regional biota of this genus, which occurs in parts of Indochina. Phylogeographical pattern of Stedocys based on multigene DNA sequence datasets reveals how tectonic history drove four biological splits. The first split dates to the late Paleocene–Eocene and involves the Truong Son Mountain Range and Mekong River. The other splits associate with the Eocene–Oligocene transition, including the Tonkin (Beibu) Gulf, the Ma River, and the Red River. These events indicate four early uplifts of the Himalayas and Tibetan Plateau. Our results cannot reject the hypothesis that uplifting of the Himalayas and Tibetan Plateau region due to crustal thickening and the lateral extrusion of Indochina occurred synchronously during the Paleocene–Oligocene transition in reaction to the Indian–Eurasian collision. Species of Stedocys cluster into groups I and II. Their evolution involves one dispersal and four vicariance events, which formed the following five Indochinese clades: Hainan clade (I-1); western Yunnan and central Laos clade (I-2); central Vietnam clade (I-3); northern Vietnam and southwestern China clade (I-4); and Thailand clade (II-1). The lateral extrusion of Indochina is the driver of these events. The drifting of Hainan Island to its present location owes to its southeastern movement from continental Vietnam and Guangxi, China around the Eocene–Oligocene boundary. This biogeographical pattern highlights the significant role geography plays in shaping evolutionary history in southeastern Asia. It also illuminates the how the timing of geological events drives the distributions of species.
Data from: Cave Stedocys spitting spiders illuminate the history of the Himalayas and Southeast Asia
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FIGURE 4. Female tarsal claws I. A–B. Scytodes globula, left tarsus. C–D. Stedocys leopoldi, right tarsus. A, C. Retrolateral-apical view. B. Apical view. D in The placement of the spider genus Periegops and the phylogeny of Scytodoidea (Araneae: Araneomorphae)
FIGURE 4. Female tarsal claws I. A–B. Scytodes globula, left tarsus. C–D. Stedocys leopoldi, right tarsus. A, C. Retrolateral-apical view. B. Apical view. D. Retrolateral view. Scales: A–D 50 µm. Abbreviations: IC, inferior claw (character 11); Ony, onychium (character 10); PBc, prolateral bipectinated claw (character 12, state 1).
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