Djeboa gledhilli Pesic, Cook & Gerecke, sp. nov.
Creators: name: Pešić, Vladimir
name: Cook, David
name: Gerecke, Reinhard
name: Smit, Harry
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Trombidiformes
Mideopsidae
Djeboa
Djeboa gledhilli

description: Djeboa gledhilli Pešić, Cook & Gerecke sp. nov.
(Figs. 22A–F, 37G)
Type series: Holotype male, dissected and slide mounted, Côte d’Ivoire, River N’zi near Ouokokro (O), drift day, 10.i.1978 Statzner. Paratype: same locality as holotype, drift net, 27.i.1977, 0/1/0 (dissected and slide mounted).
Diagnosis: Dorsal shield oval (L/W ratio 1.1), with medial depression; muscle scars anterior and posterior to the postocularia with strongly pronounced thickenings, second pair of muscle scars shifted to the edge of dorsal depression (Figs. 22A, 37G); colour not recognizable; 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 extending directly laterally; Cx-III and -IV with a series of longitudinal striae (five pairs on Cx-IV). Palp (Figs. 22D–E): 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 slender, basally thickened, from here to anterior tip equally narrowed. Legs: I-L (Fig. 22F) with I-L-6 L/H ratio 2.2-2.3, ventral and dorsal margins distally strongly diverging; IV-L too foreshortened to illustrate, but similar to D. expansipalpis (see Fig. 19F); swimming setae numbers (most of them hidden and cannot be counted): III-L-5, 5; IV-L-5, 4-5.
Description:
Male (holotype): Idiosoma (ventral view: Fig. 22B) L/W 413/372. Dorsal shield (Figs. 22A, 37G) L/W 350/ 312, ratio 1.1; gnathosomal bay L 66. Gonopore L/W 63/14; ejaculatory complex L 138. Palp: total L 138-145; L/ H, L/H ratio: P-1, 15-17/20-28, 0.75-0.8; P-2, 37-39/35, 1.07-1.09; P-3, 36-38/26, 1.38-1.44; P-4, 39-40/15, 2.5- 2.7; P-5, 11/5, 2.3; chelicera total L 80; gnathosoma vL 74. Legs: dL of I-L: 37, 38, 34, 37, 48, 60; I-L-6 H 27, I-L- 6 L/H ratio 2.2.
Female (paratype): Idiosoma (ventral view: Fig. 22C) L/W 413/374. Dorsal shield L/W 361/320, ratio 1.13; gnathosomal bay L 54. Gonopore L/W 66/71, ratio 0.94; egg (n = 1) maximum diameter 111. Palp (Fig. 21A): total L 145; L/H, L/H ratio: P-1, 15/22, 0.72; P-2, 39/36, 1.05; P-3, 39/28, 1.39; P-4, 40/16, 2.5; P-5, 12/6, 2.0; gnathosoma vL 74.
Etymology: Named after Terence Gledhill (UK) in appreciation of his studies on Afrotropical water mites.
Discussion: Djeboa gledhilli sp. nov. belong to the compressa- group of species (see under D. compressa for diagnostic features of this group). In lacking a dorsal seta on P-1 and the strongly protruding dorsal margin of P-2, forming an acute angle in proximal part of segment, Djeboa gledhilli sp. nov. resembles D. ghanaensis sp. nov. from Ghana. The latter has less pronounced dorsal muscle scars, Cx-III/IV with less longitudinal striation, posterior margin of Cx-IV directed posterolaterally and a proportionally much stockier P-4.
Distribution: Côte d’Ivoire.
description: Published as part of 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, pp. 1-75 in Zootaxa 3720 (1) on pages 39-41, DOI: 10.11646/zootaxa.3720.1.1, http://zenodo.org/record/285029