Indoribates (Haplozetes) asetosus Liu, Dalatov, Saidov & Chen, 2025, sp. nov.
Creators: name: Liu, Cheng-Lin
name: Dalatov, Abdulaziz
name: Saidov, Abdusattor
name: Chen, Jun
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Oribatida
Haplozetidae
Indoribates
Indoribates asetosus

description: Indoribates (Haplozetes) asetosus sp. nov.
Figs 3, 4 Common name. 无毛单翼甲螨
Type material.
Holotype • (female CJ-14-064): Tajikistan, Tavildara District, Hoja Pulod Village, 38°43'28"N, 70°27'14"E, 1730 m, grass and soil, 14 July 2014, Jun Chen leg. Paratypes • (one female, one male, CJ-14-064): same data as for holotype.
Diagnosis.
Body size: 620–740 × 414–480. Rostrum rounded. Rostral, lamellar and interlamellar setae long, setiform, barbed; le> in> ro. Bothridial seta long, with shorter stalk and longer, uniformly thickened, barbed head. Tutorium short, simple. Ten pairs of notogastral setae represented by alveoli. All epimeral setae setiform, slightly thickened, barbed. Genital, aggenital, anal and adanal setae setiform, barbed; adanal setae ad 1 and ad 2 long, thickened, inserted on semicircular protrusion. Solenidion φ on tibia IV absent, but seta d developed instead it.
Description.
Measurements. Body length 682 (holotype, female), 620–740 (two paratypes: one male, one female); body width 420 (holotype), 414–480 (two paratypes).
Integument. Body light 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. 3 A, C). Rostrum rounded. Tutorium short, simple. Lamella about 1 / 2 length of prodorsum. Sublamella visible. Sublamellar porose area (7) oval. Rostral (86–97), lamellar (138–149) and interlamellar (108–116) setae setiform, barbed. Exobothridial seta (7–9) setiform, thin, smooth. Bothridial seta (100–112) long, with shorter stalk and longer, uniformly thickened, barbed head. Sejugal porose area distinct, located posterolateral to interlamellar seta, transversely elongate.
Notogaster (Fig. 3 A, C, D). Anterior notogastral margin convex medially. Dorsophragma nearly oval. Pteromorph with distinct hinge. Ten pairs of notogastral setae represented by alveoli. Four pairs of saccules with small opening and drop-like channel. Opisthonotal gland opening and all lyrifissures distinct.
Gnathosoma (Figs 4 E). Subcapitulum size: 151–159 × 105–112. All subcapitular setae (h 22–26, m 24–26, a 24–25) setiform, smooth. Both adoral setae (7–10) setiform, barbed. Palp (length 85–91) with setation 0-2 - 1 - 3 - 9 (+ ω). Postpalpal seta (7) spiniform, roughened. Chelicera (length 150–162) with two setiform barbed setae (cha: 39–44; chb: 25–29).
Epimeral and lateral podosomal regions (Fig. 3 B, C). Epimeral setal formula: 3-1 - 3 - 3. All epimeral setae (30–56) setiform, slightly thickened, barbed. Pedotectum II trapezoid. Discidium triangular, rounded apically. Circumpedal carinae long, reaching to acetabulum II.
Anogenital region (Fig. 3 B, C). Genital (15–24), aggenital (21–23) and anal (21–25) setae setiform, barbed. All adanal setae barbed, ad 1-2 (41–45) thicker, inserted on semicircular protrusion; ad 3 (21–23) setiform. Adanal lyrifissure laterally located, adjacent to anal aperture.
Legs (Fig. 4 A – D). 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 - 19) [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 - 4 - 12) [0-0 - 0]. Homology of setae and solenidia indicated in Table 2. Solenidion φ on tibia IV absent, but seta d developed instead it.
Note. See Table 1 for explanation.
Etymology.
The specific name asetosus refers to notogastral setae represented by alveoli.
Remarks.
Indoribates (Haplozetes) asetosus sp. nov. is morphologically similar to I. (H.) fusifer (Berlese, 1908) (see also Akrami and Behmanesh 2013) and I. (H.) triungulatus (Beck, 1964) in having long bothridial seta with narrowly elongate head, but differs from I. (H.) fusifer by the absence of φ on tibia IV (vs presence), and the thickened adanal setae ad 1, ad 2 (vs thin). Moreover, the new species is distinguished from I. (H.) triungulatus by the shape of the interlamellar seta (long, barbed vs short, smooth), the length of the adanal setae ad 1-2 (long vs short) and tutorium (short vs long); and the shape of all notogastral setae (represented by alveoli vs short, setiform).
The most remarkable diagnosis of the new species is that solenidion φ on the leg tibia IV is absent, but represented by d. We examined the type specimens carefully and found no solenidion φ and no alveolus; there is a barbed d seta in the corresponding position. This feature is not typical for Haplozetidae, but it is typical for representatives of the related oripodoid family Parakalummidae.
description: Published as part of Liu, Cheng-Lin, Dalatov, Abdulaziz, Saidov, Abdusattor & Chen, Jun, 2025, Two new species of the subgenus Indoribates (Haplozetes) (Acari, Oribatida, Haplozetidae) from Tajikistan, pp. 233-244 in ZooKeys 1229 on pages 233-244, DOI: 10.3897/zookeys.1229.130103