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44 results for “Chaerilus”
Figures 17–21 in Eight new species of the genera Scorpiops Peters, Euscorpiops Vachon, and Chaerilus Simon (Scorpiones: Euscorpiidae, Chaerilidae) from Tibet and Yunnan, China
Figures 17–21: Scorpiops atomatus sp. n., male holotype. Chela, dorsoexternal, ventral, external and internal aspects. 21 same as 20, female paratype. Scales = 1 mm.
Confirmation of Basitarsal Compound Slit Sensilla (BCSS) in scorpion genera Chaerilus and Scorpiops (Arachnida: Scorpiones)
<p><span>Basitarsal Compound Slit Sensilla (BCSS) are a cluster of mechanosensory structures, collectively composed of striated, curved, successive slits located at the prodistal end of basitarsus, forming into a fan-shaped configuration. It can efficiently detect and amplify substrate-borne micro-vibrational signals at a certain frequency range which cause slit deformation (Wang et al., 2019), being most sensitive to surface Rayleigh waves and crucial for locating the vibration source (but requires sensilla on multiple legs) (Brownwell & Farley, 1979). This structure, to my knowledge, has only been formally reported in three species, <em>Androctonus australis </em>(Linnaeus, 1758), <em>Heterometrus silenus</em> (Simon, 1884) and <em>Smeringurus mesaensis </em>(Stahnke, 1957) (Barth & Wadepuhl, 1975; Brownwell & Farley, 1979; Wang et al., 2019). The present work constitutes an informal observation (out of curiosity) of BCSS across 3 genera, confirming its presence (with different forms) in two of those genera.</span></p> <p><span>BCSS was confidently confirmed in all <em>Scorpiops</em> and <em>Chaerilus</em> species examined (see figures on subsequent pages). There appeared to be some interspecific differences (e.g., the proximal boundary that delineates the sensillar area) within the same genus, but I have not confirmed if those differences are stable and non-overlapping (i.e., diagnostic). Sensilla are closely associated with specific ecological adaptions which shape their phenotypic configurations. One of the most famous sensilla in scorpions is the trichobothrium, which serves as an important diagnostic character for many distinct lineages. Similarly, the constellation array on the externodistal surface of pedipalp fixed finger was also found to be diagnostic in some vaejovids. It is interesting to note the different configurations of slit sensilla between genera <em>Scorpiops</em> and <em>Chaerilus</em>, where in <em>Chaerilus</em> a long, accessory slit sensillum was always present external to the main sensillar area (on or near its boundary). Occasionally, several short striations (sensilla?) were also observed on the joint tubercle between the basi- and telotarsi. Unfortunately, due to the magnification constraint: I was not able to examine genera <em>Langxie</em> and <em>Qianxie</em> (both with highly slender basitarsi); I was not able to confidently identify the striation in genus <em>Olivierus</em> albeit observing a similar depression at the same location (BCSS of the much smaller species of <em>Scorpiops</em> (<em>S. jendeki</em> and <em>S. kovariki</em>) and <em>Chaerilus</em> were even more conspicuous).</span></p>
Figure 8 in Two new species of the genus Chaerilus Simon, 1877 from Malaysia (Scorpiones: Chaerilidae)
Figure 8: Chaerilus petrzelkai Kovařík, 2000, female holotype, dorsal aspect.
Figures 1–2 in Two new species of the genus Chaerilus Simon, 1877 from Malaysia (Scorpiones: Chaerilidae)
Figures 1–2: Chaerilus ojangureni sp. n., male holotype: 1. dorsal aspect; 2. ventral aspect.
Figure 7 in Two new species of the genus Chaerilus Simon, 1877 from Malaysia (Scorpiones: Chaerilidae)
Figure 7: Chaerilus celebensis Pocock, 1894, female holotype, dorsal aspect.
Figure 126 in Eight new species of the genera Scorpiops Peters, Euscorpiops Vachon, and Chaerilus Simon (Scorpiones: Euscorpiidae, Chaerilidae) from Tibet and Yunnan, China
Figure 126: Chaerilus pictus Pocock, 1890, female, habitus. Total length 39.89 mm.
Figure 4 in Two new species of the genus Chaerilus Simon, 1877 from Malaysia (Scorpiones: Chaerilidae)
Figure 4: Chaerilus laevimanus Pocock, 1899, female holotype, dorsal aspect.
Figure 3 in Two new species of the genus Chaerilus Simon, 1877 from Malaysia (Scorpiones: Chaerilidae)
Figure 3: Chaerilus agilis Pocock, 1899, female holotype, dorsal aspect.
Figure 109 in Eight new species of the genera Scorpiops Peters, Euscorpiops Vachon, and Chaerilus Simon (Scorpiones: Euscorpiidae, Chaerilidae) from Tibet and Yunnan, China
Figure 109: Chaerilus tessellatus sp. n., female holotype, habitus. Total length 48.93 mm.
Figure 47 in Eight new species of the genera Scorpiops Peters, Euscorpiops Vachon, and Chaerilus Simon (Scorpiones: Euscorpiidae, Chaerilidae) from Tibet and Yunnan, China
Figure 47: Scorpiops pococki sp. n., male holotype, habitus. Total length 52.26 mm.
Figure 32 in Eight new species of the genera Scorpiops Peters, Euscorpiops Vachon, and Chaerilus Simon (Scorpiones: Euscorpiidae, Chaerilidae) from Tibet and Yunnan, China
Figure 32: Scorpiops langxian sp. n., male holotype, habitus. Total length 57.52 mm.
Figure 62 in Eight new species of the genera Scorpiops Peters, Euscorpiops Vachon, and Chaerilus Simon (Scorpiones: Euscorpiidae, Chaerilidae) from Tibet and Yunnan, China
Figure 62: Euscorpiops vachoni sp. n., male holotype, habitus. Total length 52.9 mm.
Figure 16 in Eight new species of the genera Scorpiops Peters, Euscorpiops Vachon, and Chaerilus Simon (Scorpiones: Euscorpiidae, Chaerilidae) from Tibet and Yunnan, China
Figure 16: Scorpiops atomatus sp. n., male holotype, habitus. Total length 34.94 mm.
Figure. 1 in Eight new species of the genera Scorpiops Peters, Euscorpiops Vachon, and Chaerilus Simon (Scorpiones: Euscorpiidae, Chaerilidae) from Tibet and Yunnan, China
Figure. 1: Scorpiops luridus sp. n., male holotype, habitus. Total length 86.72 mm.
Figures 5−10 in The genus Chaerilus Simon, 1877 (Scorpiones, Chaerilidae) in the Indian Ocean Islands and description of a new species
Figures 5−10: Chaerilus andamanensis sp. n., male holotype. 5. Chelicera. 6. Carapace. 7. Metasomal segment V and telson, lateral aspect. 8. Cutting edge of movable finger with rows of granules and absence of a basal lobe. 9−10. Idem for Chaerilus borneensis, male holotype, without a basal lobe and, for Chaerilus variegatus, male from Java, with a basal lobe.
Figures 110–117 in Eight new species of the genera Scorpiops Peters, Euscorpiops Vachon, and Chaerilus Simon (Scorpiones: Euscorpiidae, Chaerilidae) from Tibet and Yunnan, China
Figures 110–117: Chaerilus tessellatus sp. n., female holotype. 110–112. Chela, dorsoexternal, ventral and internal aspects. 113–115. Patella, dorsal, external and internal aspects. 116–117. Femur, dorsal and external aspects. Scales = 1 mm.
Figures 103–108 in Eight new species of the genera Scorpiops Peters, Euscorpiops Vachon, and Chaerilus Simon (Scorpiones: Euscorpiidae, Chaerilidae) from Tibet and Yunnan, China
Figures 103–108: Euscorpiops karschi sp. n., female holotype. 103–104. Chelicera, dorsal and ventral aspects. 105. Telson, lateral aspect. 106. Dentate margin of the pedipalp chela movable finger. 107–108. Sternum, genital operculum and pectines. 107. male paratype. 108. female holotype.
Figures 2–6 in Eight new species of the genera Scorpiops Peters, Euscorpiops Vachon, and Chaerilus Simon (Scorpiones: Euscorpiidae, Chaerilidae) from Tibet and Yunnan, China
Figures 2–6: Scorpiops luridus sp. n., male holotype. 2–5. Chela dorsoexternal, external, ventral and internal aspects. 6 same as 5, female paratype. Scale = 3 mm.
Figures 7–15 in Eight new species of the genera Scorpiops Peters, Euscorpiops Vachon, and Chaerilus Simon (Scorpiones: Euscorpiidae, Chaerilidae) from Tibet and Yunnan, China
Figures 7–15: Scorpiops luridus sp. n., male holotype. 7. Femur dorsal aspect. 8–10. Patella dorsal, external and ventral aspects. 11-12. Chelicera, ventral and dorsal aspects. 13. Lateral ocular region, in detail, dorsal aspect. 14. Sternum, genital operculum and pectines. 15. Dentate margin of the pedipalp chela movable finger. Scales = 1 mm.
Figures 26-35 from: Yin S, Qiu Y, Pan Z, Li S, Di Z (2015) Chaerilus pseudoconchiformus sp. n. and an updated key of the chaerilid scorpions from China (Scorpiones, Chaerilidae). ZooKeys 495: 41-51. https://doi.org/10.3897/zookeys.495.9016
Figures 26-35 - Chaerilus pseudoconchiformus sp. n. Male holotype: 28–30 Chela, dorsoexternal, ventral, and internal aspects 34 Movable finger of pedipalp. Female paratype (Ar.−USTC−XZLZ1402): 26–27 Patella, external and ventral aspects 31–33 Chela, dorsoexternal, ventral, and internal aspects 35 Movable finger of pedipalp. Scale bars = 2 mm.
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