Depressorotunda (Depressorotunda) malaya KONTSCHÁN, 2010

Kontschán, J. & Starý, J., 2012, New Uropodina Species And Records From Malaysia (Acari: Mesostigmata), Acta Zoologica Academiae Scientiarum Hungaricae 58 (2), pp. 177-192 : 189-190

Depressorotunda (Depressorotunda) malaya KONTSCHÁN, 2010

Material examined. One female and two males. MAY–044, West Malaysia , Batu Caves, 30.XII.2010, rain forest on lime-stone bedrock, GPS 03°14’50“N, 101°41’17“E, wet site with rich brushwood, sample of leaf litter, leg. J. FARSKÁ (one male in ISB, one male and female in HNHM). Distribution : Malaysia .

Depressorotunda (Depressorotunda) batuensis sp. n.

( Figs 28–30 )

Material examined. Holotype . female, MAY–044, West Malaysia, Batu Caves, 30.XII.2010, rain forest on lime-stone bedrock, GPS 03°14’50“N, 101°41’17“E, wet site with rich brushwood, sample of leaf litter, leg. J. FARSKÁ (in HNHM). Paratypes , two males (in ISB) , one male (in NHMG) , one male (in HNHM), locality and date same as in holotype .

Description. Female. Length of idiosoma 340 µm, width 280 µm (n = 1). Shape circular, posterior margin rounded.

Dorsal idiosoma ( Fig. 28 ). Marginal and dorsal shields fused. Dorsal setae smooth, needle-like, ca. 28–32 µm long. Surface of dorsal idiosoma smooth.

Ventral idiosoma ( Fig. 29 ). Sternal and ventral shields without sculptural pattern. Sternal setae smooth, short (ca. 4–5 µm) and needle-like. St1 at level of anterior margin of genital shield, St2 and St3 at level of posterior margin of coxae II, St4 at level of posterior margin of coxae III. All sternal setae smooth and needle-like. Sternal shield with two pairs of lyrifissures, first pair of them near to St1, second pair near posterior corners of genital shield. Ventral setae V 1, V 2 and V 3 placed on margin of ventral cavity, V 1 marginally pilose (ca. 75 µm), V 2 (ca. 55 µm) and V 3 (ca. 50 µm) smooth and needle-like. V 4 sitauted near posterior margin of ventral cavity, smooth and short (ca. 8 µm) and placed in ventral cavity, near posterior edges of genital shield. One pair of lyrifissures situated near insertions of V 2 and V 3. Stigmata situated between coxae II and III. Peritremes hook-shaped. Genital shield linguliform, its surface smooth. Tritosternum and gnathosoma not clearly visible (covered by coxae I).

Legs. Leg I with ambulacral prolongation.

Male. Length of idiosoma 330–340 µm, width 270–280 µm (n = 4). Shape circular, posterior margin rounded. Dorsal idiosoma. Ornamentation and chaetotaxy of dorsal shield as for female. Ventral idisoma. Four pairs of sternal setae situated anterior to genital shield, these setae smooth, needle-like, St1 and St2 short (ca. 4–5 µm), St1 placed near anterior margin of sterna shield, St2 at level of posterior margin of coxae II, St3 and St4 long (ca. 25–27 µm) and situated anteriorly to genital opening ( Fig. 30 ). Surface of sternal shield smooth. Surface of ventral shield and shape and size of ventral setae similar to that of female. Genital shield circular, placed between coxae IV.

Etymology.The name of the new species refers to the Batu cave where the new species was found.

KEY TO THE DEPRESSOROTUNDA (DEPRESSOROTUNDA) SPECIES

1 Genital shield of female, sternal shield of male ornamented by oval pits D. (D.) alveolata KONTSCHÁN et STARÝ, 2011

– Genital shield of female and sternal shield of male without ornamentation 2

2 All ventral setae smooth 3

– One of ventral setae marginally pilose D. (D.) batuensis sp. n.

3 Peritreme R-shaped, posteriormost dorsal setae conspicuously longer than those with anterior position D. (D.) seticaudata KONTSCHÁN, 2010

– Peritreme hook-shaped, most of dorsal setae equal in length 4

4 V3 as long as V2 and V4 5

– V3 two times longer than V2 and V4 D. (D.) mirifica KONTSCHÁN, 2010

5 Male ventral cavity conspicuously enlarged, reaching sternal region, with genital shield in medial part; most of dorsal setae with distal pilosity D. (D.) malayana KONTSCHÁN, 2010

– Male ventral cavity smaller, not reaching sternal region, genital shield situated outside of cavity; most of dorsal setae smooth D. (D.) thailandica KONTSCHÁN, 2010

Figures

Figs 28–30. Depressorotunda (Depressorotunda) batuensis sp. n.: 28 female, holotype, dorsal view, 29 = ventral view, 30 = intercoxal region of male