Djeboa ghanaensis Pešić & Smit, 2013

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 : 38

Djeboa ghanaensis Pešić & Smit sp. nov.

( Figs. 21A–D , 37H )

Type series: Holotype female, dissected and slide mounted, Ghana, Ankasa River, Ankasa NP, 5º 13.011 N, 2º 39.126 W, 13.ii.2013 Smit.

Diagnosis: Dorsal shield oval (L/W ratio 1.2), with medial depression ( Fig. 37H ); muscle scars anterior and posterior to the postocularia with weakly pronounced thickenings, second pair of muscle scars shifted to the edge of dorsal depression ( Figs. 21A ); gnathosomal bay V-shaped; tips of Cx-I ending posterior to frontal margin; medial margins of Cx-IV not reduced to a median angle and well separated from each other, posterior margin of Cx-IV directed posterolaterally; one pair of longitudinal striae on Cx-IV. Palp ( Fig. 21D ): P-1 without a dorsal seta; P-2 strongly inflated, in proximal part with strongly protruding dorsal margin forming an acute angle, ventral margin S-shaped, distally convex; P-3 higher proximally than distally, ventral margin concave, dorsal margin strongly convex; P-4 basally thickened. Legs: I-L ( Fig. 21C ) with I-L-6 L/H ratio 2.2, ventral and dorsal margins distally strongly diverging; IV-L too foreshortened to illustrate, but similar to D. expansipalpis (see Fig. 19F ); swimming setae numbers: III-L-5, 5; IV-L-4, 3; IV-L-5, 5.

Description:

Female (holotype): Idiosoma (ventral view: Fig. 21B ) L/W 397/359. Dorsal shield ( Figs. 21A , 37H ) L/W 364/ 303, ratio 1.2; gnathosomal bay L 66. Gonopore L/W 65/68, ratio 0.96. Palp: total L 156; L/H, L/H ratio: P-1, 17/ 23, 0.74; P-2, 42/37, 1.1; P-3, 42/26, 1.58; P-4, 43/19, 2.3; P-5, 12/8, 1.5; chelicera total L 72; gnathosoma vL 64. Legs: dL of I-L-4-6: 37, 46, 62; I-L-6 H 28, I-L-6 L/H ratio 2.2.

Male: Unknown.

Etymology: Named after the country where the type locality is located.

Discussion: See below under Djeboa gledhilli sp. nov.

Distribution: Ghana, known only from the type locality ( Fig. 45D ).

Figures

FIGURE 21 A – D. Djeboa ghanaensis sp. nov., female: A = dorsal shield; B = idiosoma, ventral view; C = I-L- 4 - 6; D = palp.

FIGURE 37 A – L. Photographs of dorsal shield. A – B. Djeboa amendano sp. nov.: A — holotype male; B — paratype female. C. Djeboa curtipalpis sp. nov., holotype male. D. Djeboa depressa sp. nov., holotype male. E. Djeboa compressa K. Viets, 1914, female lectotype (SMF 43190). F. Djeboa expansipalpis (Cook, 1966), female, Tinbé, Côte d’Ivoire. G. Djeboa gledhilli. sp. nov., holotype male. H. Djeboa ghanaensis sp. nov., holotype male. I – J. Djeboa angulipalpis sp. nov.: I — holotype male; J — paratype female. K – L. Djeboa mandena sp. nov.: K— holotype male; L — paratype female.

FIGURE 19 A – F. Djeboa expansipalpis (Cook, 1966) (B = male, A, C – E = female): A = dorsal shield; B – C = idiosoma, ventral view; D = palp; E = I-L; F = IV-L.

FIGURE 45 A – D. Photographs of selected sampling localities. A. Madagascar, Joffreville (M. d’Ambre, Antsiranana), Maison Rousettes, river with small cascade and pool. Home of Djeboa amethystica sp. nov.; B. Madagascar, Ionilahy (Fianarantsoa), lake Ranovory. Home of Djeboa amendano sp. nov.; C. Ghana, Kyabobo NP, Kue River. Locus typicus of Djeboa wondergemi sp. nov.; D. Ghana, Ankasa NP, Ankasa River. Locus typicus of Djeboa ghanaensis sp. nov. and home of Djeboa ferruginea K. Viets, 1914 and D. unimaculata (Cook. 1966). Photos. A – B Gerecke, C – D Smit.