Djeboa compressa 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 : 25

Djeboa compressa K. Viets, 1914

( Figs. 12A–F , 37E )

Djeboa multidentata compressa K. Viets 1914: 220 . Mideopsis (Djeboa) compressa Cook 1966: 231 .

Material examined: Type series: SMF, Cameroon; lectotype, here designated, K. Viets 43190, “ Kamerun, Manoka b. Duala, Bach, 11.11.1911, Damköhler leg. 1270”; paralectotype female, K. Viets 43191, same data as holotype, “1271”.

General features: Dorsal shield oval (L/W ratio 1.1), with medial depression; muscle scars anterior and posterior to postocularia with moderately pronounced thickenings, second pair of muscle scars located well within the dorsal depression; central portion of dorsal shield purple ( Fig. 37E ); gnathosomal bay V-shaped; tips of Cx-I not reaching frontal margin; medial margins of Cx-IV reduced to a median angle, approaching to each other, posterior margin of Cx-IV extending almost directly laterally. Palp ( Fig. 12D ): P-1 with a dorsal seta; P-2 inflated, with straight ventral and convexly bowed dorsal margin; P-3 ventral margin concave, dorsal margin usually with a pronounced indentation slightly distal to middle of the segment; P-4 slender, basally thickened, from here to anterior tip narrowed. Legs: I-L ( Fig. 12E ) with I-L-6 L/H ratio 2.7, distally thickened; IV-L: Fig. 12F .

Discussion: Along with D. expansipalpis and D. gledhilli sp. nov., both from Côte d’Ivoire, and D. globulipalpis sp. nov. from South Africa, D. compressa forms a species group characterized by the V-shaped gnathosomal bay and P-4 much longer than high.

Distribution: Cameroon (Viets 1914), Liberia (Cook 1966).

Figures

FIGURE 12 A – F. Djeboa compressa K. Viets, 1914 (B, F – E = male, A, C – D = female): A = dorsal shield; B – C = idiosoma, ventral view; D = palp; E = I-L; F = IV-L.

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.