Maerkelotritia kirghizica, Niedbała, 2006

Niedbała, Wojciech, 2006, New species of palaearctic Oribotritiidae (Acari, Oribatida), Zootaxa 1175, pp. 55-68 : 64-68

Maerkelotritia kirghizica sp. nov. ( Figs 4 . A–G)

Description

Measurements of holotype: prodorsum: length 283, width 197, height 111, sensilli 109, setae: interlamellar 142, lamellar 101, rostral 81.0, exobothridial 17.7; notogaster: length 525, width 308, height 333, setae c 1 and h 1 75.9, ps 1 60.7; genital and aggenital plates 152 x 37.9, anal and adanal plates 228 x 22.9.

Colour yellow. Integument finely punctate.

Prodorsum without distinct lateral carinae. Sensilli long with fusiform head, with sparse spines. Setae (except short and smooth exobothridial) long, erect, in> sens> le> ro> ex, with sparse spines. Mutual distance between interlamellar setae slightly longer than between rostral setae and considerably longer than between lamellar setae. Notogaster with rigid setae, fairly short (c 1 <c 1 –d 1), slightly barbed; setae of row c remote from anterior border, setae c 1 more remote than setae c 2 and c 3; vestigial setae f 1 located anteriorly of h 1 setae. Ventral region: palps three segmented with formula: 2­2­7(1); setae h of mentum considerably longer than distance between them; epimeral formula: 3–0–2–2; six to seven pairs of genital setae (holotype left plate six and right plate seven setae and all paratypes 7 setae), two pairs of aggenital setae; anal plates without setae. Adanal plates each with four setae, setae ad 1 and ad 2 remote from setae ad 3 and ad 4.

Setation and solenidiotaxy of legs (without tarsi): I: 1–3–4(2)–5(1), II: 1–4–4(1)–5(1), III: 2–3–3(1)–2(1), IV: 3–3–2(0)–2(1).

Type Holotype and eight paratypes: Kyrgizstan 30 km N from Karakol, 3700 m, summit rocky ground, 25 VIII 2002, leg. M. Skoracki and B. Sikora. Types deposited in DATE.

Comparison

The new species is easily distinguishable from congeners by the presence of fusiform, barbed head of sensilli, genital plates with seven pairs of setae, anal plates without setae, adanal plate with four pairs of setae.

Etymology

The specific name refers to the Kyrgizstan state that includes the type locality.

OTHER LOCALITIES. Kyrgizstan, 120 km S from Bishkek, 2150 m., Ala­Archa Canyon reserve, flood waters of stream, 4 IX 2002, leg. M. Skoracki and B. Sikora (12 specimens); Kyrgizstan , 33 km N of Tokfogul, 42 o 09’N 72 o 50’E, 1820 m, canyon of Chychkan river, prov. Talas, mixed forest, 27 VI 2003, leg. R. Dobosz (30 specimens) ; Uzbekistan, under Juniperus sp., IV 1977, leg. M.S. Giljarov (23 specimens) .

Distribution Palaearctic, Middle Asia.

Indotritia tricarinata sp. nov.

( Figs 5 A–H)

Description

Large species. Measurements of holotype: prodorsum: length 530, width 404, height 167, sensilli 182, setae: in 131, ro 101, le 40.4; notogaster: length 1190, width 716, height 883, setae c 1 182, h 1 207, ps 1 151; genitoaggenital plate 313 x 141; anal and adanal plate 530 x 121.

Colour brown. Integument finely punctate.

Prodorsum with three pairs of lateral carinae. Sensilli long, rigid, smooth. Rostral and interlamellar setae thick, erect, rigid, rough, lamellar setae, shorter, fine, smooth, exobothridial setae vestigial; sens> in> ro> le.

Notogaster with short (c 1 <c 1 –d 1), rigid, rough setae, except smooth, flexible setae c 3; setae c 1 considerably remote from anterior margin, setae c 3 less remote. Opening of opisthosomal gland and arrangement of lyrifissures and vestigial setae typical for genus.

Ventral region. Setation of palps: 0­2­0­2­9(1). Setae h of mentum considerably longer than distance between them; furrows trv very short, furrows between genital and aggenital plates rather long; nine pairs of genital setae with formula 4:5, three pairs of aggenital setae present; two pairs of anal setae and two pairs of minute adanal setae present, lyrifissures iad situated laterally of ad 2 setae.

Legs. Setation and solenidiotaxy (without tarsi): I: 1–3–5(2)–5(1), II: 1–4–4(1)–3(1), III: 3–2–3(1)–3(1), IV: 3–2–2(1)–3(1). Femora with strong distal carina.

Type Holotype (deposited in DATE): Slovenia, 1 km from Postoina, mixed forest litter under the castle, 7 XI 1963, leg. J. Rafalski.

Etymology The specific name tricarinata refers to the presence of three pairs of lateral carinae of prodorsum.

Comparison

The new species is similar to the pantropical I. krakatauensis ( Sellnick, 1923) but it is distinguishable by the presence of rigid, erect rostral and interlamellar setae and 3 pairs of aggenital setae.

Acknowledgements

I am very grateful to all those who have collected the specimens named above.

References

Mahunka, S. (1990). A survey of the superfamily Euphthiracaroidea Jacot, 1930 (Acari: Oribatida). Folia Entomologica Hungarica, 51, 37–80.

Niedbała, W. (2000). The ptyctimous mites fauna of the Oriental and Australian regions and their centres of origin (Acari: Oribatida). Genus, supplement, 1–489.

Niedbała, W. (2004) Ptyctimous mites (Acari, Oribatida) of the Neotropical Region. Annales Zoologici, 54, 1–288.

Sellnick, M. (1923) Die mir bekannten Arten der Gattung Tritia Berlese. Acari. Blatter für Milbenkunde, 3, 7–22.

Figures

FIGURE 4. A–G. Maerkelotritia kirghizica sp. nov. (holotype): A– prodorsum, dorsal view, Bóprodorsum, lateral view, Cómentum of infracapitulum (paratype), Dópartial mentum of infracapitulum, Eóregion of epimeres, Fóleft side of ventral region, Góopisthosoma, lateral view.

FIGURE 5. A–I. Indotritia tricarinata sp. nov. (holotype): Aóprodorsum, dorsal view, Bóprodorsum, lateral view, Cóseta e 1, Dógnathosoma with palp, Eómentum of infracapitulum, Fóright part of ventral side, Góopisthosoma, lateral view, Hótrochanter and femur of leg I.