| _version_ | 1866902134948102144 |
|---|---|
| author | Gardini, Giulio |
| author_facet | Gardini, Giulio |
| contents | <p><b><i>Neobisium</i> (<i>Neobisium</i>) <i>magrinii</i> n. sp.</b></p><p>(Figs 64–70, 119)</p><p><b>Type locality</b>: Italy, Latium, Frosinone Province, Aurunci Mountains, Coreno Ausonio, Grotta l’Arnale 871 La /FR (41°20’55.45”N 13°45’42.30”E).</p><p><b>Distribution</b>. Italy: Latium.</p><p><b>Diagnosis (</b>♂ <b>♀)</b>. A subterranean, troglomorphic <i>Neobisium</i> from Latium (Aurunci Mountains) that differs from other Mediterranean species of the genus in the following combination of characters: posterior margin of carapace with 4 setae, epistome triangular, anterior eyes with convex lens, dark integument between anterior and posterior eyes absent; tergites I–IV: 4:4:4–6:4–6; cheliceral palm with 6 setae, rallum with 8–9 blades; fixed chelal finger homodentate, with contiguous teeth; fixed and movable chelal fingers with 145–166 and 124–150 teeth, respectively; pedipalpal femur 2.43–2.53 mm length (8.10–8.62 ×), patella 1.84–1.95 mm (5.70–6.10 ×), movable finger 2.64–2.85 mm; pedipalpal hand with long oval profile and its greatest width just proximally the middle; chelal fingers slightly curved both in dorsal and lateral view; ratio between movable chelal finger and hand of chela with pedicel 1.79–1.88; ratio between pedipalpal femur and movable chelal finger 0.87–0.92; ratio between pedipalpal femur and carapace 2.01–2.34; trichobothrium <i>ist</i> distal <i>st</i> or proximal <i>st</i>.</p><p><b>Type material.</b> ITALY — <i>Latium: Frosinone Province:</i> 1 ♂ (holotype), Aurunci Mountains, Coreno Ausonio, Grotta l’Arnale 871 La /FR (41°20’55.45”N 13°45’42.30”E), 180 m a.s.l., 3.I.2000, L. Latella leg. (MHNG). Paratypes: 1♂, same data as for holotype, 5.X.2008, P. Magrini leg.; 2♀, id., 25.VII.2019, P. Magrini leg.</p><p><i>Derivatio nominis.</i> Named in honour of Paolo Magrini (Florence), entomologist and biospeleologist, for his contribution to the knowledge of the Italian subterranean fauna.</p><p><b>Description of adults (♂ ♀).</b> Carapace, chelicerae, pedipalps and palpal coxae red-brown; pedipalps smooth, pleural membrane granular. Carapace 1.35 (<b>♂</b>) or 1.32 (<b>♀</b>) times as long as broad, with four reduced eyes without tapetum (Fig. 64), without dark integument between anterior and posterior eyes; anterior eyes with convex lens (diameter 0.09–0.11 mm), the posterior ones with a flatter lens; anterior margin of carapace with an equilateral triangular epistome (Fig. 64); 18–19 macrosetae, anterior and posterior rows with 4 and 4 macrosetae, respectively, besides 1 preocular seta on each side. Chaetotaxy of tergites I–X: 4:4:4:4–5:6:6:6:6:7:7 (<b>♂</b>) or 4:4:4–6:6:5–6:6:6– 7:6–7:7:7 (<b>♀</b>). Chaetotaxy of sternites II–X: 13:(3)35(3):(2)12(2):12:12:12:12:10:10 (<b>♂</b>) or 12:(3)20(2):(2)10(2):12– 13:11–12:11–12:11–12:9–11:9–12 (<b>♀</b>); median genital sac not seen, genital atrium with 5+5 setae. Chelicera (Fig. 65) 2.05 (<b>♂</b>) or 2.04–2.09 (<b>♀</b>) times as long as broad, palm with 6 setae (6 and 7 in a ♀); fixed finger with about 12 teeth (worn out), movable finger with about 9 teeth, one of which more prominent just proximal <i>gs</i>; <i>gs</i> ratio 0.65 (<b>♂</b>) or 0.61–0.64 (<b>♀</b>), spinneret prominent and broadly rounded in male (Fig. 65), more prominent in female; rallum with 9 blades, the distal one laterally serrate-pinnate and isolated on a prominence, the second, the sixth and the seventh ones serrate, the others smooth, of decreasing length (<b>♂</b>), or with 8 blades, the proximal six smooth (<b>♀</b>); serrula exterior with about 35 blades. Manducatory process with 5 setae. Coxal setae: pedipalp 10–11, I 6–7, II 6–7, III 6, IV 10 (<b>♂</b>) or 8–11, I 5–8, II 6–8, III 6–7, IV 8–10 (♀); anterolateral process of coxa I squat and pointed, anteromedial process broadly rounded with denticles (Fig. 66). Pedipalp (Figs 67–69): trochanter 2.71 (<b>♂</b>) or 2.74– 2.87 (♀) times as long as broad, with 4 weak button-like tubercles (with lyrifissure) on antiaxial face; femur 8.43 (♂) or 8.10–8.62 (♀) times as long as broad, weakly enlarged distally; patella 6.10 (<b>♂</b>) or 5.70–5.84 (♀) times as long as broad, club gradually enlarged distally, ratio between club and pedicel 2.4 (<b>♂</b>) or 2.3–2.6 (♀), ratio X/Y = 0.25 (<b>♂</b>) or 0.25–0.29 (♀), base of pedicel dorsally with 4–6 glandular pores; chela with pedicel 7.81 (<b>♂</b>) or 7.50 (♀) times as long as broad; hand of chela with pedicel 2.81 (<b>♂</b>) or 2.77–2.78 (♀) times as long as broad, with long oval profile and its greatest width just proximally the middle; chelal fingers slightly curved both in dorsal and lateral view (Figs 68–69); fixed chelal finger homodentate (Fig. 69), with 166 (<b>♂</b>) or 145–159 (♀) contiguous teeth, nodus ramosus subterminal; movable chelal finger with 150 (<b>♂</b>) or 124–140 (♀) low, flattened contiguous teeth, apart from those distal the trichobothrium <i>t</i>, which are cuspidate (Fig. 69); all teeth with dental canals; sensillum in variable position between trichobothria <i>sb</i> and <i>st</i>; trichobothria as in figs 68–69; relative position of trichobothria along chelal axis: <i>it</i> 0.10/ <i>et</i> 0.115/ <i>est</i> 0.155 / <i>ist</i> 0.31/ <i>isb</i> 0.80/ <i>ib</i> 0.91/ <i>esb</i> 0.965/ <i>eb</i> 0.975/ <i>t</i> 0.16/ <i>st</i> 0.36/ <i>sb</i> 0.71/ <i>b</i> 0.89 (<b>♂</b>); <i>it</i> 0.095 – 0.105 / <i>et</i> 0.115/ <i>est</i> 0.14 –0.155/ <i>ist</i> 0.31–0.335/ <i>isb</i> 0.81/ <i>ib</i> 0.92–0.93/ <i>esb</i> 0.97/ <i>eb</i> 0.98/ <i>t</i> 0.15/ <i>st</i> 0.28–0.41/ <i>sb</i> 0.67– 0.78/ <i>b</i> 0.91 (♀); trichobothrium <i>est</i> at level of <i>t</i> (<b>♂</b> ♀); trichobothrium <i>ist</i> distal <i>st</i> or proximal <i>st</i> (♀); trichobothrium <i>isb</i> proximal <i>sb</i> (<b>♂</b> ♀); ratio between movable finger and hand of chela with pedicel 1.88 (<b>♂</b>) or 1.79–1.82 (♀); ratio between pedipalpal femur and movable finger 0.90 (<b>♂</b>) or 0.87–0.92 (♀); ratio between pedipalpal femur and carapace 2.34 (♂) or 2.01–2.11 (♀). Leg IV (Fig. 70): trochanter 2.88 (♂) or 2.65–2.96 times as long as deep, femur + patella 7.66 (♂) or 6.67–6.81 (♀) times as long as deep, tibia 13.35 (♂) or 11.57–13.03 (♀) times [TS = 0.36 (♂) or 0.225–0.29 (♀)], basitarsus 7.07 (♂) or 6.14–7.07 (♀) times [TS = 0.15 (♂) or 0.10–0.16 (♀)], telotarsus 11.45 (♂) or 10.33–11.56 (♀) times as long as deep [TS = 0.56 (♂) or 0.50 (♀)], ratio between basitarsus and telotarsus 0.73 (♂) or 0.69 (♀), subterminal seta dentate, not furcate (Fig. 70), claws with small dorsal tooth.</p><p>Measurements. Body length 4.0 (♂) or 4.4–4.7 (♀). Carapace 1.08 (♂) or 1.15–1.24 (♀) × 0.80 (♂) or 0.87– 0.94 (♀) anteriorly. Chelicera 0.82 (♂) or 0.87–0.90 (♀) × 0.40 (♂) or 0.415–0.44 (♀); movable finger length 0.53 (♂) or 0.57–0.59 (♀). Pedipalp: trochanter 0.84 (♂) or 0.85–0.89 (♀) × 0.31 (♂) or 0.31 (♀); femur 2.53 (♂) or 2.43–2.50 (♀) × 0.30 (♂), 0.29–0.30 (♀); patella 1.95 (♂) or 1.84–1.88 (♀) × 0.32 (♂) or 0.315–0.33 (♀); chela with pedicel 4.14 (♂) or 3.98–4.20 (♀) × 0.53 (♂) or 0.53–0.56 (♀); hand with pedicel length 1.49 (♂) or 1.47–1.56 (♀); movable finger length 2.80 (♂) or 2.64–2.85 (♀). Leg IV: trochanter 0.78 (♂) or 0.72–0.73 (♀) × 0.27 (♂) or 0.26– 0.275(♀); femur + patella 2.30 (♂) or 2.18–2.27 (♀) × 0.30 (♂) or 0.32–0.34 (♀); tibia 2.07 (♂) or 1.91–2.02 (♀) × 0.155 (♂) or 0.155 –0.165 (♀); basitarsus 0.92 (♂) or 0.86–0.92 (♀) × 0.13 (♂) or 0.13–0.14 (♀); telotarsus 1.26 (♂) or 1.24–1.33 (♀) × 0.11 (♂) or 0.115–0.12 (♀).</p><p><b>Remarks.</b> <i>Neobisium magrinii</i> <b>n. sp.</b>, known only from the type locality is in the Aurunci Mountains, is morphologically very similar to <i>N. patrizii</i> from the Lepini Mountains, with which it shows the same high levels of troglomorphism. <i>Neobisium magrinii</i> differs from <i>N. patrizii</i> in having the anterior eyes with convex lens (anterior eyes with slightly convex lens or reduced to a white spot in <i>N. patrizii</i>), the chelal hand with long oval profile and its greatest width just proximally the middle (chelal hand with its greatest width in the middle in <i>N. patrizii</i>), the chelal fingers curved in lateral view (chelal fingers more straight in <i>N. patrizii</i>), the fixed chelal finger always homodentate (homodentate or weakly heterodentate in <i>N. patrizii</i>), the pedipalpal femur length 2.43–2.53 mm (2.07–2.41 mm in <i>N. patrizii</i>), the movable chelal finger length 2.64–2.85 mm (2.36–2.50 mm in <i>N. patrizii</i>) and the ratio between movable finger and hand of chela with pedicel 1.79–1.88 (1.66–1.82 in <i>N. patrizii</i>).</p><p><i>Neobisium magrinii</i> <b>n. sp.</b> shares the homodentate dentition of fixed chelal finger and the shape of pedipalpal chela with <i>N. vignai</i> <b>n. sp.</b>, known from caves of the Ausoni and Aurunci Mountains, but it differs from <i>N. vignai</i> in having a more evident troglomorphism:for the main differential characters between the two species see Key to species.</p> |
| format | Recurso digital |
| id | zenodo_https___doi_org_10_5281_zenodo_10392399 |
| institution | Zenodo |
| language | |
| publishDate | 2023 |
| publisher | Zenodo |
| record_format | zenodo |
| spellingShingle | Neobisium (Neobisium) magrinii Gardini 2023, n. sp. Gardini, Giulio Biodiversity Taxonomy Animalia Arthropoda Arachnida Pseudoscorpiones Neobisiidae Neobisium Neobisium magrinii <p><b><i>Neobisium</i> (<i>Neobisium</i>) <i>magrinii</i> n. sp.</b></p><p>(Figs 64–70, 119)</p><p><b>Type locality</b>: Italy, Latium, Frosinone Province, Aurunci Mountains, Coreno Ausonio, Grotta l’Arnale 871 La /FR (41°20’55.45”N 13°45’42.30”E).</p><p><b>Distribution</b>. Italy: Latium.</p><p><b>Diagnosis (</b>♂ <b>♀)</b>. A subterranean, troglomorphic <i>Neobisium</i> from Latium (Aurunci Mountains) that differs from other Mediterranean species of the genus in the following combination of characters: posterior margin of carapace with 4 setae, epistome triangular, anterior eyes with convex lens, dark integument between anterior and posterior eyes absent; tergites I–IV: 4:4:4–6:4–6; cheliceral palm with 6 setae, rallum with 8–9 blades; fixed chelal finger homodentate, with contiguous teeth; fixed and movable chelal fingers with 145–166 and 124–150 teeth, respectively; pedipalpal femur 2.43–2.53 mm length (8.10–8.62 ×), patella 1.84–1.95 mm (5.70–6.10 ×), movable finger 2.64–2.85 mm; pedipalpal hand with long oval profile and its greatest width just proximally the middle; chelal fingers slightly curved both in dorsal and lateral view; ratio between movable chelal finger and hand of chela with pedicel 1.79–1.88; ratio between pedipalpal femur and movable chelal finger 0.87–0.92; ratio between pedipalpal femur and carapace 2.01–2.34; trichobothrium <i>ist</i> distal <i>st</i> or proximal <i>st</i>.</p><p><b>Type material.</b> ITALY — <i>Latium: Frosinone Province:</i> 1 ♂ (holotype), Aurunci Mountains, Coreno Ausonio, Grotta l’Arnale 871 La /FR (41°20’55.45”N 13°45’42.30”E), 180 m a.s.l., 3.I.2000, L. Latella leg. (MHNG). Paratypes: 1♂, same data as for holotype, 5.X.2008, P. Magrini leg.; 2♀, id., 25.VII.2019, P. Magrini leg.</p><p><i>Derivatio nominis.</i> Named in honour of Paolo Magrini (Florence), entomologist and biospeleologist, for his contribution to the knowledge of the Italian subterranean fauna.</p><p><b>Description of adults (♂ ♀).</b> Carapace, chelicerae, pedipalps and palpal coxae red-brown; pedipalps smooth, pleural membrane granular. Carapace 1.35 (<b>♂</b>) or 1.32 (<b>♀</b>) times as long as broad, with four reduced eyes without tapetum (Fig. 64), without dark integument between anterior and posterior eyes; anterior eyes with convex lens (diameter 0.09–0.11 mm), the posterior ones with a flatter lens; anterior margin of carapace with an equilateral triangular epistome (Fig. 64); 18–19 macrosetae, anterior and posterior rows with 4 and 4 macrosetae, respectively, besides 1 preocular seta on each side. Chaetotaxy of tergites I–X: 4:4:4:4–5:6:6:6:6:7:7 (<b>♂</b>) or 4:4:4–6:6:5–6:6:6– 7:6–7:7:7 (<b>♀</b>). Chaetotaxy of sternites II–X: 13:(3)35(3):(2)12(2):12:12:12:12:10:10 (<b>♂</b>) or 12:(3)20(2):(2)10(2):12– 13:11–12:11–12:11–12:9–11:9–12 (<b>♀</b>); median genital sac not seen, genital atrium with 5+5 setae. Chelicera (Fig. 65) 2.05 (<b>♂</b>) or 2.04–2.09 (<b>♀</b>) times as long as broad, palm with 6 setae (6 and 7 in a ♀); fixed finger with about 12 teeth (worn out), movable finger with about 9 teeth, one of which more prominent just proximal <i>gs</i>; <i>gs</i> ratio 0.65 (<b>♂</b>) or 0.61–0.64 (<b>♀</b>), spinneret prominent and broadly rounded in male (Fig. 65), more prominent in female; rallum with 9 blades, the distal one laterally serrate-pinnate and isolated on a prominence, the second, the sixth and the seventh ones serrate, the others smooth, of decreasing length (<b>♂</b>), or with 8 blades, the proximal six smooth (<b>♀</b>); serrula exterior with about 35 blades. Manducatory process with 5 setae. Coxal setae: pedipalp 10–11, I 6–7, II 6–7, III 6, IV 10 (<b>♂</b>) or 8–11, I 5–8, II 6–8, III 6–7, IV 8–10 (♀); anterolateral process of coxa I squat and pointed, anteromedial process broadly rounded with denticles (Fig. 66). Pedipalp (Figs 67–69): trochanter 2.71 (<b>♂</b>) or 2.74– 2.87 (♀) times as long as broad, with 4 weak button-like tubercles (with lyrifissure) on antiaxial face; femur 8.43 (♂) or 8.10–8.62 (♀) times as long as broad, weakly enlarged distally; patella 6.10 (<b>♂</b>) or 5.70–5.84 (♀) times as long as broad, club gradually enlarged distally, ratio between club and pedicel 2.4 (<b>♂</b>) or 2.3–2.6 (♀), ratio X/Y = 0.25 (<b>♂</b>) or 0.25–0.29 (♀), base of pedicel dorsally with 4–6 glandular pores; chela with pedicel 7.81 (<b>♂</b>) or 7.50 (♀) times as long as broad; hand of chela with pedicel 2.81 (<b>♂</b>) or 2.77–2.78 (♀) times as long as broad, with long oval profile and its greatest width just proximally the middle; chelal fingers slightly curved both in dorsal and lateral view (Figs 68–69); fixed chelal finger homodentate (Fig. 69), with 166 (<b>♂</b>) or 145–159 (♀) contiguous teeth, nodus ramosus subterminal; movable chelal finger with 150 (<b>♂</b>) or 124–140 (♀) low, flattened contiguous teeth, apart from those distal the trichobothrium <i>t</i>, which are cuspidate (Fig. 69); all teeth with dental canals; sensillum in variable position between trichobothria <i>sb</i> and <i>st</i>; trichobothria as in figs 68–69; relative position of trichobothria along chelal axis: <i>it</i> 0.10/ <i>et</i> 0.115/ <i>est</i> 0.155 / <i>ist</i> 0.31/ <i>isb</i> 0.80/ <i>ib</i> 0.91/ <i>esb</i> 0.965/ <i>eb</i> 0.975/ <i>t</i> 0.16/ <i>st</i> 0.36/ <i>sb</i> 0.71/ <i>b</i> 0.89 (<b>♂</b>); <i>it</i> 0.095 – 0.105 / <i>et</i> 0.115/ <i>est</i> 0.14 –0.155/ <i>ist</i> 0.31–0.335/ <i>isb</i> 0.81/ <i>ib</i> 0.92–0.93/ <i>esb</i> 0.97/ <i>eb</i> 0.98/ <i>t</i> 0.15/ <i>st</i> 0.28–0.41/ <i>sb</i> 0.67– 0.78/ <i>b</i> 0.91 (♀); trichobothrium <i>est</i> at level of <i>t</i> (<b>♂</b> ♀); trichobothrium <i>ist</i> distal <i>st</i> or proximal <i>st</i> (♀); trichobothrium <i>isb</i> proximal <i>sb</i> (<b>♂</b> ♀); ratio between movable finger and hand of chela with pedicel 1.88 (<b>♂</b>) or 1.79–1.82 (♀); ratio between pedipalpal femur and movable finger 0.90 (<b>♂</b>) or 0.87–0.92 (♀); ratio between pedipalpal femur and carapace 2.34 (♂) or 2.01–2.11 (♀). Leg IV (Fig. 70): trochanter 2.88 (♂) or 2.65–2.96 times as long as deep, femur + patella 7.66 (♂) or 6.67–6.81 (♀) times as long as deep, tibia 13.35 (♂) or 11.57–13.03 (♀) times [TS = 0.36 (♂) or 0.225–0.29 (♀)], basitarsus 7.07 (♂) or 6.14–7.07 (♀) times [TS = 0.15 (♂) or 0.10–0.16 (♀)], telotarsus 11.45 (♂) or 10.33–11.56 (♀) times as long as deep [TS = 0.56 (♂) or 0.50 (♀)], ratio between basitarsus and telotarsus 0.73 (♂) or 0.69 (♀), subterminal seta dentate, not furcate (Fig. 70), claws with small dorsal tooth.</p><p>Measurements. Body length 4.0 (♂) or 4.4–4.7 (♀). Carapace 1.08 (♂) or 1.15–1.24 (♀) × 0.80 (♂) or 0.87– 0.94 (♀) anteriorly. Chelicera 0.82 (♂) or 0.87–0.90 (♀) × 0.40 (♂) or 0.415–0.44 (♀); movable finger length 0.53 (♂) or 0.57–0.59 (♀). Pedipalp: trochanter 0.84 (♂) or 0.85–0.89 (♀) × 0.31 (♂) or 0.31 (♀); femur 2.53 (♂) or 2.43–2.50 (♀) × 0.30 (♂), 0.29–0.30 (♀); patella 1.95 (♂) or 1.84–1.88 (♀) × 0.32 (♂) or 0.315–0.33 (♀); chela with pedicel 4.14 (♂) or 3.98–4.20 (♀) × 0.53 (♂) or 0.53–0.56 (♀); hand with pedicel length 1.49 (♂) or 1.47–1.56 (♀); movable finger length 2.80 (♂) or 2.64–2.85 (♀). Leg IV: trochanter 0.78 (♂) or 0.72–0.73 (♀) × 0.27 (♂) or 0.26– 0.275(♀); femur + patella 2.30 (♂) or 2.18–2.27 (♀) × 0.30 (♂) or 0.32–0.34 (♀); tibia 2.07 (♂) or 1.91–2.02 (♀) × 0.155 (♂) or 0.155 –0.165 (♀); basitarsus 0.92 (♂) or 0.86–0.92 (♀) × 0.13 (♂) or 0.13–0.14 (♀); telotarsus 1.26 (♂) or 1.24–1.33 (♀) × 0.11 (♂) or 0.115–0.12 (♀).</p><p><b>Remarks.</b> <i>Neobisium magrinii</i> <b>n. sp.</b>, known only from the type locality is in the Aurunci Mountains, is morphologically very similar to <i>N. patrizii</i> from the Lepini Mountains, with which it shows the same high levels of troglomorphism. <i>Neobisium magrinii</i> differs from <i>N. patrizii</i> in having the anterior eyes with convex lens (anterior eyes with slightly convex lens or reduced to a white spot in <i>N. patrizii</i>), the chelal hand with long oval profile and its greatest width just proximally the middle (chelal hand with its greatest width in the middle in <i>N. patrizii</i>), the chelal fingers curved in lateral view (chelal fingers more straight in <i>N. patrizii</i>), the fixed chelal finger always homodentate (homodentate or weakly heterodentate in <i>N. patrizii</i>), the pedipalpal femur length 2.43–2.53 mm (2.07–2.41 mm in <i>N. patrizii</i>), the movable chelal finger length 2.64–2.85 mm (2.36–2.50 mm in <i>N. patrizii</i>) and the ratio between movable finger and hand of chela with pedicel 1.79–1.88 (1.66–1.82 in <i>N. patrizii</i>).</p><p><i>Neobisium magrinii</i> <b>n. sp.</b> shares the homodentate dentition of fixed chelal finger and the shape of pedipalpal chela with <i>N. vignai</i> <b>n. sp.</b>, known from caves of the Ausoni and Aurunci Mountains, but it differs from <i>N. vignai</i> in having a more evident troglomorphism:for the main differential characters between the two species see Key to species.</p> |
| title | Neobisium (Neobisium) magrinii Gardini 2023, n. sp. |
| topic | Biodiversity Taxonomy Animalia Arthropoda Arachnida Pseudoscorpiones Neobisiidae Neobisium Neobisium magrinii |
| url | https://doi.org/10.5281/zenodo.10392399 |