Radfordia mirabilis Bochkov & Abramov

Bochkov, Andre V. & Abramov, Alexei V., 2014, Acariform mites (Acariformes) - permanent symbionts of Hapalomysdelacouri Thomas (Rodentia, Muridae) in Vietnam, ZooKeys 459, pp. 137-145 : 139-142

Taxon classification Animalia Trombidiformes Myobiidae

Radfordia mirabilis Bochkov & Abramov sp. n. Fig. 3

Type material.

Female holotype (ZISP My-T-37, AVB 10-0803-012) and 1 female paratype (ZISP AVB 10-0803-012) from Hapalomys delacouri Thomas ( Rodentia : Muridae ) [skin], VIETNAM: Binh Phuoc Province, Bu Gia Map National Park, 13 km NE Bu Gia Map Village, 540 m a.l.s., 12°11'37"N, 107°12'21"E, 13 January 2010, coll. A.V. Abramov (ZISP 99485). Mites removed by A.V. Bochkov.

Type deposition.

Holotype and single paratype deposited in ZISP.

Description.

Female (holotype, 1 paratype). Body 435 long (410), 245 wide (230). Body 1.8 times longer than wide. Setae vi, ve, d1, and d2 10-12 wide at base; si and se2 about 7 wide at base; c1 and c2 about 5 wide at base, e1, e2, and f2 about 3 wide at base. Apices of setae si reaching level of setal bases d1, apices of setae se reaching level of setal bases c2. Approximate distances between bases of setae: vi–vi 25, si–si 22, c1-c1 17, c1-c2 50, d1-d1 15, d2-d2 50, c1-d1 52, d1-d2 17. Setal bases f1 situated close to e2 than to e1, distance e1-f1 about 50, f1-e2 about 13. Setae f2 situated at lateral margins of idiosoma. Lengths of setae: vi 75 (70), ve 90 (93), si 115 (110), se 87 (85), c1 63 (75), c2 125 (115) - all distinctly longitudinally striated; d1 115 (117) and d2 about 125, membranous, without striae, e1 about 27, e2 about 75, f1 about 60, f2 about 15, h1 about 12, h2 310 (315), ps1 and ps2 about 11, ps3 (hook-like) about 15, g1 about 6, g2 about 8, 1a, 2a 25-28, 3a about 80, and 4a about 75, ag1 and ag3 8-11, ag2 about 12. Setae 3a and 4a slightly thickened. Apical segment of leg I without ventral projection. Setation for legs II-IV (solenidia in parentheses): tarsi 7(1)-6-6, tibiae 6-6-6, genua 7 (1)-6-5, femora 5-3-3, trochanters 3-3-3, coxae 4-2-2.

Etymology.

This epithet refers the unusual external morphology of this species - mirabilis (Latin, wonderful).

Differential diagnosis.

The subgenus Radfordia is separated onto two species groups, " ensifera " (setation of coxae II-IV 3-2-2) and “lancearia” (3-1-2) ( Bochkov and Fain 2003; Bochkov 2009). The new species distinctly differs from all known species of both groups by the setation of coxae II-IV(4-2-2), position of setae f2 on the lateral margins of the opisthosoma (vs. distant from the lateral margins in all other species) and the bases of f1 and e2 which are situated close to each other (vs. distant in all other species). Therefore, we establish for this new species a new species group mirabilis.