Djeboa amendano 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 amendano

description: Djeboa amendano Pešić, Cook & Gerecke sp. nov.
(Figs. 2A–F, 37A–B)
Type series: Holotype male, dissected and slide mounted, Madagascar 0 76, Fort Dauphin (Tulear), Mandena (QMM area), pond at right border of River Amendano, 10 m asl., 21.6 ˚C, 0.211 mS/cm 13.ix.2001, Gerecke & Goldschmidt. Paratypes: same data as holotype 0/1/0 (dissected and slide mounted); Madagascar 0 79, Fort Dauphin (Tulear), Mandena (QMM area), swamp with Sphagnum at left border of River Amendano (1 km downstream road bridge), 10 m asl., 21.4 ˚C, 0.290 mS/cm 13.ix.2001, Gerecke & Goldschmidt 1/1/0 (dissected and slide mounted); Madagascar 0 77, Fort Dauphin (Tulear), Mandena (QMM area), ditch at right border of River Amendano, 10 m asl., 23.4 ˚C, 0.158 mS/cm 13.ix.2001, Gerecke & Goldschmidt 1/2/0 (slide mounted); Madagascar 226, Ionilahy (Fianarantsoa), lake Ranovory below village, 211 m asl., 21°43'49.8'' S, 047°36'58.6'' E, 31.8 ˚C, 22.iv.2011, Gerecke 1/3/0 (1/1/0 slide mounted, 0/2/0 and one egg from the slide-mounted female in pure ethanol).
Diagnosis: Dorsal shield oval (L/W ratio 1.1), without a medial depression; muscle scars not pronounced, visible only as lightly whitish areas (Fig. 37B); colour of dorsal shield blue green, well visible on mounted specimens; gnathosomal bay Y-shaped; tips of Cx-I ending posterior to frontal margin; coxae with a series of longitudinal striae (three to four pairs on Cx-IV). Palp (Fig. 2D): P-1 with a dorsal seta; P-2 with straight ventral and convexly bowed dorsal margin; P-3 proximally with an inflation, distally straight, maximum height proximally; P-4 slender and curved, ventral margin concave. Legs: I-L (Fig. 2E) with I-L-6 L/H ratio 2.8–2.9, basally narrowed, distally thickened; IV-L: Fig. 2F; swimming setae numbers: III-L-4, 4–6; III-L-5, 5–6; IV-L-4, 5–6; IV-L-5, 6–7.
Description:
Male (holotype): Idiosoma (ventral view: Fig. 2B) L/W 534/530. Dorsal shield (Fig. 37A) L/W 447/406, ratio 1.1; gnathosomal bay L 98. Gonopore L/W 76/19. Palp: total L 190–196; L/H, L/H ratio: P-1, 22-23/24-26, 0/89- 0.92; P-2, 51-52/41-42, 1.23-1.25; P-3, 43-46/25-26, 1.65-1.82; P-4, 60/18, 3.3; P-5, 14-15/8, 1.8-1.95; chelicera total L 106; gnathosoma vL 112. Legs: dL of I-L: 47, 57, 68, 65, 80, 109; I-L-6 H 38, I-L-6 L/H ratio 2.9; dL of IV- L: 77, 90, 79, 115, 125, 134.
Female (from Madagascar 0 76, in parentheses from Madagascar 079): Idiosoma (ventral view: Fig. 2C) L/W 578 (597)/ 610 (633). Dorsal shield (Figs. 2A, 37B) L/W 505 (538)/464 (472), ratio 1.1 (1.14); gnathosomal bay L 102 (102). Gonopore L/W 119 (115)/96 (98), ratio 1.24 (1.17); egg maximum diameter 137. Palp: total L 199–202 (204); L/H, L/H ratio: P-1, 23/25, 0.93 (23/27, 0.85); P-2, 54/43, 1.25 (56/46, 1.2); P-3, 46-48/29, 1.58–1.64 (48/ 29, 1.6); P-4, 62/21-22, 2.9-3.0 (62/19, 3.3); P-5, 14-15/8-9, 1.7-2.0 (15/8, 1.9); chelicera total L 115 (114); gnathosoma vL 106 (116). Legs: dL of I-L: 46 (52), 57 (68), 51 (62), 57 (60), 73 (77), 102 (96); I-L-6 H 36 (39), I- L-6 L/H ratio 2.8 (2.5); dL of IV-L: 78, 85 (95), 75 (82), 106 (112), 131 (131), 123 (139).
Etymology: Named after river where it was collected.
Discussion: Djeboa amendano sp. nov. is characterized by a dorsal shield without a medial depression, and muscle scars visible only as a lightly whitish areas. It is similar to Djeboa curtipalpis sp. nov. from Ghana (see the latter for further discussion).
Distribution: Madagascar.
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 11-13, DOI: 10.11646/zootaxa.3720.1.1, http://zenodo.org/record/285029