Indotritia montkoupensis, Niedbała, Wojciech & Starý, Josef, 2014

Niedbała, Wojciech & Starý, Josef, 2014, New and little known species of ptyctimous mites (Acari, Oribatida) from Cameroon, Zootaxa 3889 (1), pp. 31-57 : 34-36

Indotritia montkoupensis sp. nov.

( Fig. 1A–H )

Measurements of holotype. Prodorsum: length 465, width 379, height 187; prodorsal setae: sensillus 101, interlamellar (in) 40, lamellar (le) 38, rostral (ro) 58, exobothridial (ex) 88; notogaster: length 848, width 626, height 667; notogastral setae: c 1 and ps 1 116, h 1 45; genitoaggenital plate 192×126, anoadanal plate 424×65.

Measurements of paratype I. Prodorsum: length 505, width 242, height 182; notogaster: length 980, width 757, height 747.

Description. Colour light to dark brown. Integumental surface of body punctated. Prodorsum with one pair of lateral carinae. Sensilli long and smooth. Prodorsal setae short, filiform, smooth, rostral setae longer than rather faint interlamellar and lamellar setae, exobothridial setae the longest.

Notogaster with short (c 1/ c 1- d 1=0.3) needleform setae, setae of c row distanced from anterior notogastral border, setae c 1 more, setae c 3 less remote. Lateral opisthosomal glands, lyrifissures and vestigial setae typical to family.

Ventral region. Setae h of subcapitular mentum considerably longer than distance between their insertion points. Palps five segmented with formula of setation: 0-2-0-2-9(1). Epimeral setation formula: 3-0-3-3. Two posterior epimeres with one more setae than usual in the family. Left genital plate with eight setae, right genital plate with nine setae; paratype I with the same number of genital setae; three or four anterior genital setae located in progenital position considerably distanced from other genital setae of central and posterior part of plates; aggenital setae ag 1 vestigial, setae ag 2 short. Two pairs of anal and three pairs of adanal setae present, anal setae located in anterior part of anal plates, adanal setae distributed along the whole adanal plates, distance between them is similar, setae ad 3 positioned between the level of anal setae, all setae minute; big lyrifissures iad situated in anterior part of adanal plate, anteriorly of an 2 setae.

Legs. Chaetome of legs (without tarsi I and II): I: 1-4-5(2)-5(1); II: 1-4-4(1)-5(1); III: 3-2-3(1)-4(1); IV: 3-2- 2(1)-3(1). Anterodorsal part of femur I with strong triangular spine. Tarsi heterotridactylous.

Material examined. Holotype and 15 paratypes are deposited at DATE from locus typicus: South–West Province, Mt. Koup Ecological Reserve, Mt. Koup at Nyasoso, 19–21. V. 2006, about 6 km N of Loum, latitude 04°49'09.18" N, longitude 09°42'27.18" E, altitude 1550 m, submontane foggy forest, litter and soil sifting sample, leg V. Grebennikov, five paratypes are deposited at ISB and one paratype is deposited at NHMG, all ones from the same locality.

Etymology. The specific epithet mountkoupensis refers to the locality of this species—Mont Koup Ecological Reserve.

Comparison. The new species is easily distinguishable from all Afrotropical species of the genus Indotritia by the presence of two pairs of anal setae, short needleform notogastral setae, very long exobothridial setae, aggenital setae ag 1 vestigial, and presence of one pair of lateral prodorsal carinae.

Figures

FIGURE 1 A – H. Indotritia montkoupensis sp. nov. (holotype). A, prodorsum, dorsal view; B, prodorsum, lateral view; C, opisthosoma, lateral view; D, mentum of subcapitulum; E, right genitoaggenital plate; F, left anoadanal plate; G, palp; H, trochanter and femur of leg I.