Bakerdania latissimosetosa Khaustov

Khaustov, Alexandr A., 2010, Three new species of mites of the genus Bakerdania Sasa, 1961 (Acari: Heterostigmata: Neopygmephoridae) from “ Cape Martyan ” Nature Reserve, Crimea, Zootaxa 2600, pp. 53-60 : 53-55

Bakerdania latissimosetosa Khaustov sp. nov.

Figs. 1–5 .

Description. FEMALE: Idiosomal length 242, maximum width 138. Gnathosoma ( Figs. 1–2 ) dorsally with 2 pairs of simple setae, ch 1 distinctly longer than ch 2. Dorsal medial apodeme well developed. Idiosomal dorsum ( Fig. 1 ). All tergites smooth. Setae v 2 and h 2 smooth, setae e smooth, thick and flattened, sabre-like, other dorsal setae barbed. Tips of setae sc 2, c 1, d, e, and h 2 blunt. Other dorsal setae pointed. Length of dorsal setae: v 2 10, sc 2 53, c 1 51, c 2 67, d 41, e 45, f 88, h 1 78, h 2 20. Distances between dorsal setae: v 2- v 2 36, sc 2- sc 2 33, c 1– c 1 55, c 1– c 2 28, d–d 70, e–f 6, f–f 85, h 1– h 1 58, h 1– h 2 7. Idiosomal venter ( Fig. 2 ). Apodemes 1 and sejugal apodeme well developed and joined with presternal apodeme. Apodemes 2 vestigial, very thin. Secondary transverse apodeme absent. All ventral plates smooth. Setae 1 a and 1 b strongly barbed, other ventral setae smooth. Posterior margin of posterior sternal plate convex in middle part. Setae ps 3 situated on short distance from base of ps 2. Apodemes 3 weakly developed, diffuse. Apodemes 4 long, reaching level of setae 3 c. Apodemes 5 absent. Posterior margin of aggenital plate concave. Length of ventral setae: 1 a 19, 1 b 20, 2 a 22, 2 b 15, 3 a 14, 3 b 15, 3 c 15, 4 a 13, 4 b 25, 4 c 18, ps 1 18, ps 2 5, ps 3 8. Legs ( Figs. 3–5 ). Leg I ( Fig. 3 ). Setation of legs I (number of solenidia in parenthesis): Tr 1–Fe3–Ge4–TiTa16(4). Tibiotarsus with small claw situated on long pretarsus. Solenidia ω1 16> ω2 11 = φ1 11> φ2 10. Solenidion ω1 finger-shaped. Solenidion φ1 baculiform. Solenidia ω2 and φ2 uniformly thin. Seta dFeI hook-like, setae l’GeI blunt. Leg II ( Fig. 4 ): Tr 1– Fe3–Ge3–Ti4(1)–Ta6(1). Tarsus with simple sickle-like claws. Solenidion ω (14) finger-shaped. Solenidion φ small, difficult to see, setae d’FeII blun. Leg III: Tr 1–Fe2–Ge2–Ti4(1)–Ta6. Solenidion φ small, difficult to see, setae d’FeIII blunt. Leg IV ( Fig. 5 ): Tr 1–Fe2–Ge1–Ti4(1)–Ta6. Tarsus short. Pretarsus short, with large simple claws and thin, tongue-like empodium distally. Setae v”TiIV, pl”TaIV blunt. Length of setae v”TiIV 17, pl”TaIV 22.

MALE and LARVA unknown.

Type material. Female holotype and 3 female paratypes, UKRAINE: Crimea, “Cape Martyan” Nature Reserve, in soil under grass, 10 March 2010, coll. A. A. Khaustov.

Etymology. The species name refers to very thick setae e of the new species.

Differential diagnosis. The new species is very similar to B. latipilosa ( Rack, 1967) . Both species have distinctly thickened setae e, short and simple setae on posterior sternal plate, very short setae ps 2, and small simple claw on tibiotarsus I. The new species differs by smooth, longer and thicker setae e (in B. latipilosa setae e with several barbs and distinctly shorter and thinner), by distinctly longer setae c 1, d, f, and by setae v”TiIV distinctly shorter than pl”TaIV (in B. latipilosa setae v”TiIV longer than pl”TaIV).

Figures

FIGURES 1 – 2. Bakerdania latissimosetosa sp. nov., female: 1 — dorsum 2 — venter. Scale-bar— 50 µm.

FIGURES 3 – 5. Bakerdania latissimosetosa sp. nov., female: 3 – 5 — legs I, II, and IV, respectively. Scale-bar— 20 µm.