Djeboa ferruginea K. Viets, 1914

Pešić, Vladimir, Cook, David, Gerecke, Reinhard & Smit, Harry, 2013, The water mite family Mideopsidae (Acari: Hydrachnidia): a contribution to the diversity in the Afrotropical region and taxonomic changes above species level, Zootaxa 3720 (1), pp. 1-75 : 35-38

Djeboa ferruginea K. Viets, 1914

( Figs. 20A–F , 39G–I )

Djeboa multidentata ferruginea K. Viets 1914: 219 . Mideopsis (Djeboa) ferruginea Cook 1966: 233 .

Material examined: Type series: SMF, Cameroon; lectotype female, here designated, K. Viets 43194, “ Kamerun, Manoka b. Duala, Bach, 4.1.1912, Damköhler leg. 1296”; paralectotype female: same site and date, “1300”.

New records: Côte d’Ivoire: River N’zi near Ouokokro (O), drift night, 27.i.1977 Statzner 1/3/0 (mounted); ibid., drift day, 10.i.1978 0/1/0 Statzner (mounted); River N’zi near Fetekro (F), drift night, 12.vii.1977 Statzner 0/ 1/0 (mounted); River N’zi near Bocanda (B), drift night, 14.iii.1977 Statzner 0/1/0 (mounted); ibid., drift night, 11.i.1978 Statzner 0/2/0 (mounted). Ghana: Akaa Falls, 6˚ 10.516 N, 0˚ 11.723 W, 9.iii.2011 Smit 3/2/0 (2/2/0 mounted); Fuller Falls, 8˚ 04.975 N, 1˚ 47.842 W, 6.iii.2011 Smit 1/0/0; Ankasa River, Ankasa NP, 5º 13.011 N, 2º 39.126 W, 60 m asl., 13.ii.2013 Smit 1/0/0 (mounted); Kulugu River, upstream, 6º 51.223 N, 0º 25.141 W, 410 m asl., 20.ii.2013 Smit 1/3/0; tributary of Oguntwe, Ankasa NP, 5º 16.563 N, 2º 38.733 W, 78 m asl., 14.ii.2013 Smit 0/ 1/0; Ankasa Exploration Base stream, Ankasa NP, 5º 16.413 N, 2º 38.810 W, 81 m asl., 14.ii.2013 Smit 1/6/0; Ankasa Exploration Base trail stream, Ankasa NP, 5º 16.415 N, 2º 38.751 W, 80 m asl., 14.ii.2013 Smit 1/0/0; Ankasa Exploration Base trail stream, upstream, Ankasa NP, 5º 16.376 N, 2º 38.655 W, 94 m asl., 14.ii.2013 Smit 1/ 0/0; Plunge pool, Tsatsudo Falls, 7º 07.390 N, 0º 23.365 E, 179 m asl., 22.ii.2013 Smit 0/4/0.

General features: Dorsal shield oval (L/W ratio 1.1), with medial depression ( Figs. 39G–I ); muscle scars with moderately pronounced thickenings, located anterior and posterior to the postocularia; central portion of dorsal shield light blue; gnathosomal bay of a modified Y-shape (gradually narrowing in posterior half, intermediate between typically Y- or V-shape); tips of Cx-I ending posterior to frontal margin; medial margin of Cx-IV reduced to a median angle; Cx-III and -IV with numerous longitudinal striae. Palp comparatively short and stocky ( Fig. 20D ): P-1 without a dorsal seta; P-2 inflated with convexly bowed dorsal margin; P-3 proximally as high as long; P-4 equally narrowing from base to tip. Legs: I-L ( Fig. 20E ) with I-L-6 L/H ratio 2.5, ventral margin strongly protruding; IV-L: Fig. 20F .

Discussion: The combination of a comparatively short and stocky palp with P-1 lacking dorsal seta and P-3 proximally as high as long, and Cx-III/IV with numerous longitudinal striae separates D. ferruginea from all other members of the genus.

Distribution: Cameroon (K. Viets 1914), Liberia (Cook 1966), Zimbabwe (K.O.Viets 1970), Côte d’Ivoire (first record), Ghana (first record).

Figures

FIGURE 20 A – F. Djeboa ferruginea K. Viets, 1914 (C = male, A – B, D – F = female: A = dorsal shield; B – C = idiosoma, ventral view; D = palp; E = I-L- 3 - 6; F = IV-L.

FIGURE 39 A – L. Photographs of dorsal shield. A – B. Djeboa granatica sp. nov.: A— holotype male; B — paratype male. C – D. Djeboa dinosaurophila sp. nov.: C— female holotype; D— female paratype. E – F. Djeboa harrisoni (K. O. Viets, 1970): E — female holotype (SMF 53066); F — paratype male (SMF 53068). G – I. Djeboa ferruginea K. Viets, 1914: G — female lectotype (SMF 43194); H— female, Ouokoukro, Côte d’ivoire; I— female, Akaa Falls, Ghana. J – L. Djeboa rotundata K. Viets, 1914: J — female (SMF 43200); K — female (SMF 43201); L — male lectotype (SMF 43199).