Oribotritia breviseta, Niedbała & Starý, 2014

Niedbała, Wojciech & Starý, Josef, 2014, New species of the superfamily Euphthiracaroidea (Acari: Oribatida) from Madagascar and Tanzania, Journal of Natural History 49 (27), pp. 1689-1702 : 1690-1692

Oribotritia breviseta sp. nov.

( Figure 1 )

Material examined

Holotype and six paratypes deposited at DATE from the locus typicus: MAG-008, Madagascar, Andasibe National Park , 12 April 2011, 18°56 ′ 2.5 ″ S, 48°25 ′ 12.2 ″ E, 951 m asl, sifting sample of residues under Pandanus sp., Winkler apparatus extraction, leg. P. Baňař and R. S. Rahanitriniaina, 12 paratypes deposited in DATE from the locality: MAG-058, Madagascar, Andasibe National Park , 9 April 2011, edge of Parc d’ Orchidées, sifting sample of forest litter, Winkler apparatus extraction, leg. P. Baňař, L.S. Rahanitriniaina, 20 paratypes deposited at DATE and 15 paratypes at ISB from the locality: MAG-060, Madagascar, Andasibe National Park , 11 April 2011, 18°56 ′ 50.5 ″ S, 48°25 ′ 22.6 ″ E, 948 m asl, sifting sample of forest litter in stream ravine without water, Winkler apparatus extraction, leg. P. Baňař, five paratypes deposited at NHMG from the locality: MAG-063, Madagascar, Andasibe National Park , 12 April 2011, 18°56 ′ 50.6 ″ S, 48°25 ′ 22.2 ″ E, 944 m asl, sifting sample of forest litter, Winkler apparatus extraction, leg., L.S. Rahanitriniaina: two paratypes deposited at NHMG from the locality: MAG-066, Madagascar, Andasibe National Park, 12 April 2011, 18°56 ′ 24.8 ″ S, 48°25 ′ 12.1 ″ E, 947 m asl, sifting sample of forest litter, Winkler apparatus extraction, leg., L.S. Rahanitriniaina.

Measurements of holotype

Prodorsum: length 429, width 353, height 116, sensillus 101, length of prodorsal setae: intelamellar (in) 40, lamellar (le) 96, rostral (ro) 56; notogaster: length 818, width 626, height 545, length of notogastral setae: c 1 35, c 3 63, h 1 and p 1 28, p 3 53; genital and aggenital plates 207 × 116, anal and adanal plates 454 × 96.

Description

Large species, body colour light to dark brown. Integument densely punctate.

Prodorsum with weak median crista and two pairs of parallel, distinct lateral carinae, sensilli short needle-like, and smooth. Prodorsal setae simple, interlamellar (in) and lamellar (le) setae erect, rostral setae (ro) needle-like, smooth, exobothridial setae (ex) vestigial.

Notogastral setae very short (c 1 / c 1 – d 1 = 0.2), all needle-like except filiform setae c 3 and p 3; oblique arrangement of setae c 1 – 3 very strange, setae c 1 situated very far from anterior margin of notogaster, setae c 2 in medium distance and setae c 3 in short distance from notogastral margin. Opening of opisthosomal gland and arrangement of lyrifissures and vestigial setae typical for genus.

Ventral region. Setae h of mentum considerably longer than distance between them. Anogenital cleft trv rather short. Nine pairs of genital and two pairs of short aggenital setae present. Anal plate without setae and three pairs of adanal setae present. Adanal setae ad 3 situated at level between anal setae an 2 and an 3, anal setae an 1 situated at level between adanal setae ad 1 and ad 2 setae considerably longer than between ad 2 and ad 3; lyrifissures iad situated laterally posteriorly of adanal setae ad 2.

Chaetome of legs (without tarsi): I: 1-4-5(2)-5(1), II:1-4-4(1)-3(1), III: 3-2-3(1)- 3(1), IV: 3-2-2(1)-3(1); tarsi heterotridactylous.

Etymology

The name of the new species ‘ brevis ’ is Latin for ‘short’ and refers to the length of notogastral setae.

Comparison

The new species is easy distinguishable from the related species by the presence of short notogastral setae and the oblique arrangement of notogastral setae c 1 – 3.

Figures

Figure 1. Oribotritia breviseta sp. nov., holotype: (A) prodorsum, lateral view; (B) prodorsum, dorsal view; (C) opisthosoma, lateral view; (D) mentum of subcapitulum; (E) ventral plates, right side; (F) trochanter and femur of leg I.