Machuella turcica, Baran, Şule & Ayyildiz, Nusret, 2007

Baran, Şule & Ayyildiz, Nusret, 2007, Two new species of soil mites (Acari, Oribatida, Oppiidae and Machuellidae) from Turkey, Zootaxa 1445, pp. 57-64 : 58

Machuella turcica sp. nov.

( Fig. 1 )

Material examined. Holotype: female, Karayazı, Geyikli, Erzurum, Turkey, 39°.42' N, 42°.09'E, 8 June 2000, from moss on rock. Holotype preserved in 70% ethanol, at the Acarology Laboratory of Atatürk University, Erzurum, Turkey.

Description. Holotype. Length 213, width 100.

Prodorsum ( Fig. 1 A). Rostrum gradually narrowing anteriorly, pointed at tip and undivided. Rostral (ro) and lamellar (le) setae arising laterally and close to each other, widely separated from the interlamellar (in) setae. Rostral setae do not reach the rostral tip. All prodorsal setae short (ro 7 Μm; le 10 Μm; in 5Μm) and smooth. A transverse chitinous band lies across the rostrum at some distance behind tip, rostral setae are situated on this band. A pair of light spots is located between the bothridia. Interlamellar setae are situated at the top of interbothridial tubercles. Sensillus with a clavate head without cilia, and a pointed tip.

Notogaster ( Fig. 1 A). Oval shaped, anterior border convex, decurrent lines from dorsosejugal margin absent. Notogaster with ten pairs of setae: setae long, fine, smooth, six anterior pairs straight and four posterior pairs curved. A few muscular insertions present postero-laterally.

Ve n te r ( Fig. 1 B). Epimeral setae long, directed toward centre of epimeral region; forming a basket, with a thick layer of secretion. Insertion points of epimeral setae visible through the secretion. Posterior margin of epimeral region with five pairs of long setae. Five pairs of genital setae present; insertion points of setae g4 and g5 visible, setae g3 longer than g2 and g1. Anal opening oval,slightly larger than the genital opening. One pair of aggenital, two pairs of anal and three pairs of adanal setae present. Setae ad 3 in adanal position. Lyrifissures iad in para-anal position.

Etymology. The species name is derived from the country, Turkey, in which it was found.

Notes. The new species differs from the other species of the genus by lacking a decurrent line or lines from the dorsosejugal margin of the notogaster, and the notogastral setae are not inserted in a row ( Hammer, 1961a, b, 1973). Subías & Arillo (1993) and Subías (2004) established the synonymy of some species of Machuella , and the existing species may be separated as follows.

Figures

FIGURE 1. Machuella turcica sp. nov. A. Dorsum, B. Venter, C. Lateral aspect (scale bar 50 μm).