Lebertia (Pilolebertia) porosa Thor 1900

• Main Author: Tuzovskij, Petr V.
• Format: Text
• Language: unknown
• Published: Zenodo 2016
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Arachnida; Trombidiformes; Lebertiidae; Lebertia; Lebertia porosa; Magadan; Seta; Chukotka; Kamchatka; Kamtschatka; Siberia
• Online Access: https://dx.doi.org/10.5281/zenodo.6073569; https://zenodo.org/record/6073569

Lebertia (Pilolebertia) porosa Thor, 1900 (Figs 13–25) Material examined . Larvae (n = 18) were reared from two females collected in the Ubin stream near the settlement Ubinskaya, Seversky District, Krasnodar Kray (North Caucasus): one female on 22 June 1976 and one female on 26 June 1976. The duration of the embryonic period was 10–13 days. Diagnosis. Larva. Dorsal plate elongated (L/W ratio 1.65–1.75); excretory pore plate oval; P- 4 short, L <H; urstigma relatively large (D 14–16 µm); I–III-Leg– 5 comparatively short: 64–74, 74 – 80, 85–90 µm, respectively; III–Leg- 5 without acanthoid seta. Adult. P- 3 mediodistal seta halfway between ventrodistal seta and dorsodistal seta (Fig. 25). Redescription. Larva. Dorsal plate elongate (L/W ratio 1.65–1.75) (Fig. 13), its anterior margin slightly convex, posterior margin rounded. Nine pairs of long setae ( Oe, Hi, He, Sci, Sce, Li, Le, Si, Se ) situated in the soft, wrinkled membrane, setae Si and Se slightly shorter than Oe , Hi, He, Sci, Sce, Li and Le. Excretory pore plate oval, with short anteriomedian projection (Fig. 15). Pedipalps (Fig. 18): P– 2 with single seta in proximal half; P– 4 short, its length smaller than height, with three short subequal setae (dorsal, medial and ventral) and a massive dorsodistal claw; P– 5 with two of the seven setae very long; solenidion longer than segment. Shape and arrangement of setae on legs segments as shown in Figs 19–21. Number of heavy setae from trochanter to tarsus: I–Leg: 0, 1, 1, 1, 0; II–Leg: 0, 2, 2, 1, 0; III–Leg: 0, 1, 1, 1, 0. Solenidion on tibia III situated proximal to middle of segment. Acanthoid setae present on I–II-Leg- 5 only, nearly straight. Measurements, n= 10. Dorsal plate L 240–250, W 145–160; setae Fch L 60–67, setae Fp and Oi L 22–29, setae Vi L 99–115, setae Oe L 95–105; setae Hi, He, Sci and Sce L 95–112; setae Li and Le L 85–95; setae Si and Se L 75–95, setae Ci L 130–145, setae Pi L 41–55, setae Pe L 48–64, setae C 1 L 54–65, setae C 2 L 76–93, setae C 3 L 80–95, setae C 4 L 83–95; coxal field L 230–240; medial margin of coxae I L 92–96, medial margins of coxae II– III L 102–112; urstigma D 14–16; excretory pore plate L 22–26, W 22–26; capitulum L 70–80; basal segment of chelicera L 70–74, chela L 14–16; pedipalpal segments (P– 1–5) L: 13–16, 32 – 42, 22 – 26, 13 – 16, 11 – 13, P- 4 H 22– 26; leg segments L: I–Leg- 1–5: 32–38, 38 – 42, 42–48, 55 – 60, 64–74; II–Leg- 1–5: 35–42, 35 – 39, 47–49, 60 – 67, 74–90; III–Leg- 1–5: 41–45, 38 – 48, 48–51, 64 – 74, 85–90. Adults. Both sexes. Coxal shield wider than long (Fig. 24); W posteromedial margin of Cx-II 25–50; P- 3 mediodistal seta equally distanced from dorso- and ventrodistal setae (Fig. 25); II–IV-leg swimming setae numbers: 4–7 on II-Leg- 4, 7–8 on II-Leg- 5, 6–8 on III-Leg- 4, 6–13 on III-Leg- 5, 6–8 on IV-Leg- 4, 8–14 on IV- Leg- 5. IV-Leg- 6 with 3–6 thick, short ventral setae. Female. Genital flaps elongate (L/W ratio 2.00–2.70). Measurements, n= 5. Idiosoma L 1200–1500; seta Fch L 110–120; coxal shield L 760–940, W 875–1150; Cx- I medial L 185–250, Cx-II medial L 150–165; capitular bay L 210–240, genital bay L 180–190; genital flaps L 200–275, W 75–115; genital acetabula (ac. 1–3) L: 60–80, 55 – 70, 40 – 50; basal segment of chelicera L 26 0–375, chela L 60–70; pedipalpal segments (P- 1–5) L: 30–50, 130 – 175, 105 – 140, 150–200, 25 – 50; leg segments L: I–Leg- 1–6: 85–115, 100 – 140, 110–165, 175 – 240, 185–250; II-Leg- 1–6: 85–115, 110 – 150, 130–175, 210 – 300, 225–340, 200 – 265; III–Leg- 1–6: 100–115, 150 – 175, 175–215, 260 – 350, 280–415, 250 – 350; IV–Leg- 1–6: 175–185, 160 – 190, 210–265, 285 – 390, 310 – 390, 275 – 375. Male. Genital flaps comparatively short (L/W ratio 2.1–2.4), each with 28–35 median setae and 5–8 lateral ones. Measurements, n= 3. Idiosoma L 1000–1390; coxal shield L 775–860, W 935–975; coxal field L 230–240; Cx-I medial L 255 – 240, Cx-II medial L 125–180; capitular bay L 110–115, genital bay L 90–105; genital flaps L 210–225, W 85–100; genital acetabula (ac. 1–3) L: 62–75, 55 – 63, 35 – 50; basal segments of chelicera L 250– 285, chela L 42–48; pedipalpal segments (P– 1–5) L: 35–42, 125 – 145, 108 – 120, 155–170, 42 – 45; leg segments L: I– Leg- 1–6: 85–90, 110 – 140, 125–150, 185 – 215, 200–240, 165 – 200; II–Leg- 1–6: 85–100, 125 – 150, 150–170, 225 – 275, 275–315, 250 – 300; III–Leg- 1–6: 100–105, 160 – 180, 185–215, 300 – 325, 325–375, 285 – 340; IV–Leg- 1–6: 160– 190, 175 – 190, 235–275, 325 – 370, 375–390, 310 – 365. Distribution in Russia. Widely distributed in the European part of Russia (Sokolow 1940), Asian part of Russia: West and East Siberia, Chukotka, Kamchatka, Magadan Province and Far East (Sokolow 1940, 1950, Thor 1926, Tuzovskij 1976, Wainstein 1981, Semenchenko 2008). : Published as part of Tuzovskij, Petr V., 2016, Larval morphology of Lebertia insignis Neuman, 1880, L. porosa Thor, 1900 and L. saxonica Thor, 1911 (Acari, Hydrachnidia: Lebertiidae), pp. 295-310 in Zootaxa 4121 (3) on pages 300-303, DOI: 10.11646/zootaxa.4121.3.4, http://zenodo.org/record/261168 : {"references": ["Sokolow, I. I. (1940) Hydracarina - vodyanye kleshchi. Chast' I. Hydrachnellae. Fauna SSSR (novaya seriya No 20. Paukoobraznye, 5 (2) [Hydracarina - the aquatic mites. Part I. Hydrachnellae. Fauna of the USSR. (nouv. ser., no 20), Arachnides, 5 (2)]. Nauka, Moscow-Leningrad, 24 + 511 pp. [in Russian]", "Sokolow, I. I. (1950) Vodyanye kleshchi po sboram Amurskoy ikhtiologicheskoy ekspedizii. Trudy Amurskoy ikhtiologicheskoy ekspedizii, 1, 375 - 378. [in Russian]", "Thor, S. (1926) Die Acarina der Kamtschatka-Expedition 1908 - 1909. Eghegodnik Zoologicheskogo Museya Akademii Nauk, 27, 131 - 174.", "Tuzovskij, P. V. (1976) Vodyanye kleshchi Kemerovskoy oblasti. Institut Biologii Vnutrennikh Vod, Trudy, 34 (37), 70 - 87. [in Russian]", "Wainstein, B. A. (1981) Materialy po faune vodyanykh kleshchey Dal'nego Vostoka. Bespozvonochnye zhivotnye v ekosistemakh Dal'nego Vostoka, 1981, 117 - 123. [in Russian]", "Semenchenko, K. A. (2008) The history of water mites study Acari, Hydrachnidia) of the Russian Far East. V ladimir Ya. Levanidov's Biennial Memorial Meetings, 4, 152 - 163. [in Russian]"]}