Indoribates (Haplozetes) tajikistanensis, Liu & Dalatov & Saidov & Chen, 2025

Indoribates (Haplozetes) tajikistanensis sp. nov.

Figs 1 View Figure 1 , 2 Common name. 塔吉克单翼甲螨 View Figure 2

Type material.

Holotype • (female CJ-16-036 ): Tajikistan, Sughd Region, Ghonchi District, Zarnisor Village ; 39°55'27"N, 69°08'42"E; 1055 m; moss, grass, and soil; 21 May 2016; Jun Chen leg. GoogleMaps Paratypes • (three females, two males, CJ-16-037 ): same data as for holotype GoogleMaps .

Diagnosis.

Body size: 400–471 × 257–298. Rostrum rounded. Rostral, lamellar and interlamellar setae long, setiform, barbed; le> in> ro. Bothridial seta fusiform, with short stalk and slightly longer, barbed head. Tutorium long, with tooth distally. Notogastral setae short, setiform thin, slightly barbed. Four pairs of notogastral saccules with small opening; Sa channel elongate, other channels drop-like. All epimeral setae setiform, barbed. Genital and aggenital setae slightly barbed. Both anal setae and adanal setae ad 1-2 roughened. Adanal lyrifissure immediately to anterolateral margin of anal opening.

Description.

Measurements. Body length 450 (holotype, female), 430–471 (five paratypes: two males, three females); body width 277 (holotype), 257–298 (five paratypes).

Integument. Body brown. Surface densely microfoveolate (visible only under high magnification in dissected specimens; × 1000); podosomal region and lateral part of prodorsum partially with dense microgranulate cerotegument.

Prodorsum (Fig. 1 A, C View Figure 1 ). Rostrum rounded. Tutorium long, with tooth distally. Lamellae long, located dorsolaterally. Sublamella short. Sublamellar porose area (7) oval. Rostral (57–67), lamellar (73–80) and interlamellar (65–75) setae setiform, barbed. Bothridial seta (49–55) fusiform, with short stalk and slightly longer, barbed head. Exobothridial seta (9) setiform short, roughened. Sejugal porose area diffuse, located posterolateral to interlamellar seta, transversely elongate.

Notogaster (Fig. 1 A, C View Figure 1 ). Anterior notogastral margin convex medially. Dorsophragma elongate. Pteromorph with distinct hinge. Ten pairs of notogastral setae (15–33) setiform, slightly barbed (visible under high magnification). Four pairs of saccules with small opening, Sa channel elongate, others channels drop-like. Opisthonotal gland opening and all lyrifissures clearly distinct.

Gnathosoma (Fig. 2 E – G View Figure 2 ). Subcapitulum size: 88–93 × 69–73. Subcapitular setae setiform; m (15–17) longer than a (13–15) and h (12–13); a and m barbed, h smooth. Both adoral setae (7–10) setiform, roughened. Palp (length 59–65) with setation 0-2 - 1 - 3 - 9 (+ ω). Postpalpal seta (5) spiniform, roughened. Chelicera (length 105–112) with two setiform, barbed setae (cha: 34–36; chb: 21–23).

Epimeral and lateral podosomal regions (Fig. 1 B, C View Figure 1 ). Epimeral setal formula: 3-1 - 3 - 3. All epimeral setae (11–19) setiform, barbed. Pedotectum II trapezoid, rounded apically. Discidium triangular, rounded apically. Circumpedal carina long, reaching to acetabulum II.

Anogenital region (Fig. 1 B, C View Figure 1 ). Genital (g 1 23, g 2 - g 5 17–11), aggenital (14–16) setae and adanal seta ad 3 setiform, slightly barbed. Both anal setae (9–11) and adanal setae ad 1, ad 2 (11–13) setiform, roughened. Adanal lyrifissure close and anterolateral to anal plate.

Legs (Fig. 2 A – D View Figure 2 ). All legs tridactylous; median claw thick, lateral claws thin; all claws slightly barbed on dorsal side. Dorsoparaxial porose area on femora I – IV and on trochanters III, IV well visible. Formulas of leg setation and solenidia: I (1-5 - 3 - 4 - 18) [1-2 - 2], II (1-5 - 3 - 4 - 15) [1-1 - 2], III (2-3 - 1 - 3 - 15) [1-1 - 0], IV (1-2 - 2 - 3 - 12) [0-1 - 0]. Homology of setae and solenidia indicated in Table 1 View Table 1 .

Etymology.

The specific name tajikistanensis refers to the country encompassing the type locality of this new species.

Remarks.

Indoribates (Haplozetes) tajikistanensis sp. nov. is morphologically similar to I. (H.) vindobonensis ( Willmann, 1935) (see also Grandjean 1936; Beck 1964; Kunst 1977; Mahunka 1982, 2001) from the Palaearctic, Ethiopian, Neotropical, and Oriental regions in having fusiform bothridial setae. However, the new species differs from I. (H.) vindobonensis by the position of the adanal lyrifissure iad (anterolateral margin of anal opening vs close and parallel to lateral margin of anal opening) and the shape of the saccule S 2 (with not bilobed channel vs with bilobed channel).