Anachipteria deficiens Grandjean, 1932

Bayartogtokh, B. & Ryabinin, N. A., 2012, The Soil Mite Family Achipteriidae (Acari: Oribatida) In Mongolia And The Russian Far East, Acarologia 52 (2), pp. 135-156 : 142-145

Anachipteria deficiens Grandjean, 1932

( Figs. 4 and 5 )

Anachipteria deficiens: Grandjean, 1932: 301 , figs. 5- 7; Kunst, 1971: 572, fig. 138; Krivolutsky, 1975: 335, fig. 846; Subías, 2004: 168; Weigmann, 2006: 355 , fig. 188A-D; Bayartogtokh, 2007: 358, fig. 284; 2010: fig. 84A, B.

Diagnosis — With character states of Anachipteria (see Balogh and Balogh, 1992 and Weigmann, 2006 for generic diagnosis); total length 510 – 620 µm, dorsal and ventral plates with minute granular cerotegument; lamellae fused medially, but lamellar cusps well separated from each other, with large lateral dens; sensillus with fusiform head, smooth; notogastral porose areas large, round to oval in shape; coxisternal setal formula 3-1-3-2; tutorium narrow, slightly widening anteriorly in long cusp pointed distally; pedotectum I without anterior tooth.

sum and anterior part of notogaster.

Measurements — Body length: 570 – 620 (596) µm, length of notogaster 472 – 526 (494) µm, width of notogaster 416 – 462 (435) µm.

Integument — Body color dark brown, strongly sclerotized species with minute microtubercles on posterior part of notogaster, exobothridial and lenticular regions. Granular cerotegument clearly evident on subcapitular mentum, at base of prodorsum and ventral plate.

Dorsal aspect — Rostrum triangular in both dorsal and ventral views, but pointed and curved ventrally in lateral view. Rostral seta long, barbed, curving medially, and extending well beyond tip of rostrum. Lamellae fused medially, with large cusp; lateral dens of cusp large, pointed distally. Lamellar seta shorter than ro, moderately thick, but smooth, inserted medially on ventral side of lamellar cusp ( Figs. 4B and 5C ). Interlamellar seta long, fairly thick, barbed, extending anteriorly beyond tip of lamella. Exobothridial seta minute, hardly discernable. Sensillus with slightly expanded fusiform head about half total length, smooth ( Figs. 4A and 5C ). Notogaster slightly longer than wide, ratio 1.1:1, robust in lateral view; anterior margin subtriangular, posterior margin broadly rounded. Lenticular region weakly visible and lacking true lenticulus. Notogastral setae short, thin, smooth. Porose areas round to oval in shape, Aa largest, A3 smallest; lyrifissures not evident ( Fig. 4A ). Lateral edge of pteromorph smooth, without striations.

Lateral aspect — Tutorium narrow, appearing pointed in dorsal aspect, but slightly widening anteriorly in distinct cusp pointed distally. Genal tooth sharply pointed distally, with genal notch extending posterior to insertion of seta ro. Pedotectum I well developed, fully covering acetabulum I; pedotectum II small, ear-shaped, covering less than a quarter of acetabulum II.

Ventral aspect — Subcapitular mentum with granular cerotegument; setae h, m and a medium long, smooth. Capitular angle of coxisternum projecting as sharp tooth. Chelicera chelate-dentate. Axillary saccule absent from base of palp. Epimeral setae medium long, thin, apparently smooth, formula 3-1-3-2, seta 4c not evident. Six pairs of genital, one pair of aggenital, two pairs of anal and three pairs of adanal setae thin, smooth. Lyrifissure iad adjacent and parallel to anal aperture ( Fig. 5B ).

Legs — Each tarsus with large empodial claw and thin, longer lateral claws serrated dorsally. Formula of setation, including famulus: I (1-5-3-4-20), II (1-5-3-4-15), III (2-3-1-3-15), IV (1-2-2-3-12), formula of solenidia I (1-2-2), II (1-1-2), III (1-1-0), IV (0-1-0). Setation of legs I and IV as shown in figures 4C and 5B.

Material examined — Two specimens (females): Northern slope of the Mt. Shiliin Bogd , District Dariganga, Province Suhbaatar, soils under sweetbrier, 45 o 28’N, 114 o 35’E, 1687 m a.s.l., 02 June 2003 , soils under grasses; 14 specimens (six females and eight males): Basin river Minj Gol, District Batshireet, Province Khentii, Mongolia, lichens growing on the bark and twigs of larch trees in a cool temperate larch forest ( Larix sibiricus Ledebour, 1833 ), 49 o 15’N, 108 o 40’E, 1420 m. a.s.l., 27 July 2002, Col. B. Bayartogtokh.

Remarks — The character states of specimens examined here accord well with those studied by Kunst (1971) and Weigmann (2006) from Europe, and some supplementary characteristics are provided here.

Figures

FIGURE 4: Anachipteria deficiens Grandjean, 1932: A – Dorsal view of idiosoma, legs omitted; B – Lamellar cusps; C – Leg I, left, antiaxial view.

FIGURE 5: Anachipteria deficiens Grandjean, 1932: A – Leg IV, left, antiaxial view; B – Ventral view of idiosoma, legs omitted; C – Prodor-