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1,226 results for “Pseudoscorpiones”
Fig. 6 in Three new species of pseudoscorpions (Arachnida: Pseudoscorpiones: Pseudotyrannochthoniidae) from caves in Yunnan and Guizhou Provinces, China
Fig. 6. The known distribution of Pseudotyrannochthoniidae from China. 1. Allochthonius brevitus Hu & Zhang, 2012. 2. A. exornatus Gao & Zhang, 2013. 3. A. fanjingshan Gao, Zhang & Zhang, 2016. 4. A. fuscus Hu & Zhang, 2011. 5. A. jingyuanus Zhang & Zhang, 2014. 6. A. liaoningensis Hu & Zhang, 2012. 7. A. lini sp. nov. 8. A. sichuanensis (Schawaller, 1995). 9. A. trigonus Hu & Zhang, 2011. 10. A. wui Hu & Zhang, 2011. 11. A. xuae sp. nov. 12. Centrochthonius kozlovi (Redikorzev, 1918). 13. C. cheni (Gao, Zhang & Zhang, 2016). 14. S. yinae sp. nov.
Fig. 1 in Three new species of pseudoscorpions (Arachnida: Pseudoscorpiones: Pseudotyrannochthoniidae) from caves in Yunnan and Guizhou Provinces, China
Fig. 1. Allochthonius lini sp. nov. A–K. ♂, holotype (MCWNU (Ar-Ps-YN-0082)). L. ♀, paratype (MCWNU (Ar-Ps-YN-0019)). A. Carapace. B. Right chelicera. C. Coxal spines. D. Rallum of left chelicera. E. Right leg I, lateral view. F. Right leg IV, lateral view. G. Right pedipalp (minus chela). H. Chela, retrolateral view. I. Chela, dorsal view. J. Intercoxal tubercle. K. Male genital area. L. Female genital area. Scale bars = 0.20 mm.
Fig. 5 in Three new species of pseudoscorpions (Arachnida: Pseudoscorpiones: Pseudotyrannochthoniidae) from caves in Yunnan and Guizhou Provinces, China
Fig. 5. Spelaeochthonius yinae sp. nov., dorsal views. A. ♂, holotype (MCWNU (Ar-Ps-YN-0081)). B. ♀, paratype (MCWNU (Ar-Ps-YN-0008)). Scale bar = 1.00 mm.
Fig. 2 in Three new species of pseudoscorpions (Arachnida: Pseudoscorpiones: Pseudotyrannochthoniidae) from caves in Yunnan and Guizhou Provinces, China
Fig. 2. Allochthonius xuae sp. nov. A–H. ♂, holotype (MCWNU (Ar-Ps-GZ-0056)). I. ♀, paratype (MCWNU (Ar-Ps-GZ-0012)). A. Carapace. B. Right chelicera. C. Coxal spines. D. Rallum of left chelicera. E. Left pedipalp (minus chela). F. Chela, retrolateral view. G. Chela, dorsal view. H. Male genital area. I. Female genital area. Scale bars = 0.20 mm.
FIGURE 9 in GUILHERME C. PRADO & RODRIGO L. FERREIRA (2023) Three new troglobitic species of Pseudochthonius Balzan, 1892 (Pseudoscorpiones, Chthoniidae) from northeastern Brazil Zootaxa, 5249 (1), 092-110.
FIGURE 9. Pseudochthonius pali sp. nov. A Google cave region. Satellite view B Google cave general aspect C Live male holotype D Live female paratype.
FIGURE 10 in GUILHERME C. PRADO & RODRIGO L. FERREIRA (2023) Three new troglobitic species of Pseudochthonius Balzan, 1892 (Pseudoscorpiones, Chthoniidae) from northeastern Brazil Zootaxa, 5249 (1), 092-110.
FIGURE 10. Ecological impacts to the subterranean habitat A Deforestation near cave entrance B Vegetal coal furnace.
FIGURE 9 in GUILHERME C. PRADO & RODRIGO L. FERREIRA (2023) Three new troglobitic species of Pseudochthonius Balzan, 1892 (Pseudoscorpiones, Chthoniidae) from northeastern Brazil Zootaxa, 5249 (1), 092-110.
FIGURE 9. Pseudochthonius pali sp. nov. A Google cave region. Satellite view B Google cave general aspect C Live male holotype D Live female paratype.
FIGURE 10 in GUILHERME C. PRADO & RODRIGO L. FERREIRA (2023) Three new troglobitic species of Pseudochthonius Balzan, 1892 (Pseudoscorpiones, Chthoniidae) from northeastern Brazil Zootaxa, 5249 (1), 092-110.
FIGURE 10. Ecological impacts to the subterranean habitat A Deforestation near cave entrance B Vegetal coal furnace.
Fig. 2 in A new species of Sphaerowithius (Pseudoscorpiones, Withiidae) from Namibia
Fig. 2. Sphaerowithius ansieae sp. n., holotype male, unless stated otherwise: (A) left chela, lateral; (B) left chela, dorsal, protonymph paratype; (C) carapace, dorsal; (D) right pedipalp, dorsal; (E) leg I; (F) leg IV; (G) sternites VIII and IX, ventral; (H) genitalia, ventral; (I) genitalia, ventral, female paratype. Abbreviations: da, dorsal apodeme; la, lateral apodemes; pvd, postero-ventral diverticulum; vd, ventral diverticulum. Scale bars: (A, C–F) = 0.5 mm, (B, G) = 0.2 mm, (H, I) = 0.1 mm.
Figures 1–8. Neobisium radjai n in Neobisium radjai n. sp. (Neobisiidae: Pseudoscorpiones), a new cave-dwelling pseudoscorpion from Bosnia and Herzegovina
Figures 1–8. Neobisium radjai n. sp., holotype female: 1 - carapace; 2 - genital area; 3 - chelicera; 4 - epistome; 5 - pedipalp; 6 - pedipalpal chela; 7 - leg IV; 8 - flagellum. Scales: 0.25 mm (2–4 and 8) and 0.50 mm (1 and 5–7).
Figures 4–12 in Cystowithius ankeri sp. nov. (Arachnida: Pseudoscorpiones: Withiidae), a new pseudoscorpion from the Central Andes of Colombia
Figures 4–12. Cystowithius ankeri sp. nov., Jardín Botánico de la Universidad de Caldas, Manizales, Caldas, Colombia: (4–8, 10–12) holotype male, ICN-APs-837; (9) paratype male, ICN-APs-766. (4) Carapace, dorsal view; (5) left chelicera, dorsal view; (6) right rallum; (7) left chela showing trichobothrial pattern, retrolateral view; (8) right pedipalp, ventral view; (9) patches of glandular setae on sternite VIII; (10) sternite XI and tergite XI; (11) left leg I, lateral view; (12) left leg IV, lateral view. Scale bars: 0.05 mm (10), 0.1 mm (5, 9), 0.5 mm (4, 7, 8, 11, 12).
Figures 1–3 in Cystowithius ankeri sp. nov. (Arachnida: Pseudoscorpiones: Withiidae), a new pseudoscorpion from the Central Andes of Colombia
Figures 1–3. Cystowithius ankeri sp. nov. in situ, Jardín Botánico de la Universidad de Caldas, Manizales, Caldas, Colombia: (1) paratype male, ICN-APs682; (2) paratype male, ICN-APs-766; (3) paratype female, ICN-APs-767. Photographs by Arthur Anker.
Figures 15–19 in Cystowithius ankeri sp. nov. (Arachnida: Pseudoscorpiones: Withiidae), a new pseudoscorpion from the Central Andes of Colombia
Figures 15–19. Male specimens and distribution records of five species of Cystowithius: (15) C. ankeri sp. nov., paratype, MPEG PSE 000012; (16) C. chamberlini, incomplete holotype, CAS 18448; (17) C. colombicus, paratype, NHMW 24058; (18) C. ecuadoricus, paralectotype, NHMW 24056; (19) C. smithersi, paratype, MNHN, no number provided. Scale bars: 0.5 mm (15, 16); 1 mm (17, 18); without scale (19).
Figures 13–14 in Cystowithius ankeri sp. nov. (Arachnida: Pseudoscorpiones: Withiidae), a new pseudoscorpion from the Central Andes of Colombia
Figures 13–14. Habitat of Cystowithius ankeri sp. nov.: (13) type locality, Eucalyptus grandis alley, Jardín Botánico de la Universidad de Caldas, Manizales, Caldas, Colombia; (14) Eucalyptus grandis plantation, Vereda Gallinazo, Villamaría, Caldas, Colombia.
Figure 2 in Roncus elbulli (Arachnida, Pseudoscorpiones), a new species from Cap de Creus Nature Park (Catalonia, Spain), with a key to the Spanish species of the genus Roncus
Figure 2. Habitus of Roncus elbulli sp. n. (Cap de Creus, October 2002).
Figure 1 in Roncus elbulli (Arachnida, Pseudoscorpiones), a new species from Cap de Creus Nature Park (Catalonia, Spain), with a key to the Spanish species of the genus Roncus
Figure 1. Map showing the bay slopes "calas" where Roncus elbulli sp. n. is found.
Taxonomic sampling and rare genomic changes overcome long-branch attraction in the phylogenetic placement of pseudoscorpions
<p><span><span><span><span><span><span><span><span><span><span><span>Long-branch attraction is a systematic artifact that results in erroneous groupings of fast-evolving taxa. The combination of short, deep internodes in tandem with LBA artifacts has produced empirically intractable parts of the Tree of Life. One such group is the arthropod subphylum Chelicerata, whose backbone phylogeny has remained unstable despite improvements in phylogenetic methods and genome-scale datasets. Pseudoscorpion placement is particularly variable across datasets and analytical frameworks, with this group either clustering with other long-branch orders or with Arachnopulmonata (scorpions and tetrapulmonates). To surmount LBA, we investigated the effect of taxonomic sampling via sequential deletion of basally branching pseudoscorpion superfamilies, as well as varying gene occupancy thresholds in supermatrices. We show that concatenated supermatrices and coalescent-based summary species tree approaches support a sister group relationship of pseudoscorpions and scorpions, when more of the basally branching taxa are sampled. Matrix completeness had demonstrably less influence on tree topology. As an external arbiter of phylogenetic placement, we leveraged the recent discovery of an ancient genome duplication in the common ancestor of Arachnopulmonata as a litmus test for competing hypotheses of pseudoscorpion relationships. We generated a high-quality developmental transcriptome and the first genome for pseudoscorpions to assess the incidence of arachnopulmonate-specific duplications (e.g., homeobox genes and miRNAs). Our results support the inclusion of pseudoscorpions in Arachnopulmonata (<b>new definition</b>), as the sister group of scorpions. Panscorpiones (<b>new name</b>) is proposed for the clade uniting Scorpiones and Pseudoscorpiones.</span></span></span></span></span></span></span></span></span></span></span></p>
Data from: A multivariate study of differentiating characters between three European species of the genus Lasiochernes Beier, 1932 (Pseudoscorpiones, Chernetidae)
Morphological variation in three rarely collected European species of the genus Lasiochernes Beier, 1932 is thoroughly examined in the present study. Detailed descriptions of previously ignored morphological characters of L. cretonatus Henderickx, 1998, L. jonicus (Beier, 1929) and L. pilosus (Ellingsen, 1910) are presented. The female of L. cretonatus and the nymphs of L. pilosus are described for the first time. Multivariate morphometric techniques (principal coordinate analysis and discriminant analyses) were employed to confirm morphological differentiation of the three Lasiochernes species and to identify the most reliable characters for their separation. The usefulness of particular body parts for species identification was evaluated. An identification key for the females of the Lasiochernes species studied is provided. Geographic distribution and habitat preferences of the three species are summarized.
Figure 2 in Pseudoscorpions in Cyprus: at a light trap and nocturnal activities
Figure 2. Hysterochelifer cyprius by moth-trap on the patio table. Image credits. © Ian Barton.
Figure 1 in Pseudoscorpions in Cyprus: at a light trap and nocturnal activities
Figure 1. Hysterochelifer cyprius on moth-trap and eating a fly. Image credits. © Ian Barton.
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