Opopaea namoroka, Daniela & Andriamalala & D.C. & Hormiga & D.C., 2013

Daniela, Andriamalala, D. C., Hormiga, Gustavo & D. C., 2013, Systematics Of The Goblin Spider Genus Opopaea (Araneae, Oonopidae) In Madagascar, Bulletin of the American Museum of Natural History 2013 (380), pp. 1-156 : 118-120

Opopaea namoroka , new species

Figures 10, 16, 20, 41, 47, 70, 683–714; map 4

TYPES: Male holotype and female allotype from Mahajanga: Park National Namoroka, 17.8 km 329 ° WNW Vilanandro, 16 ° 229360S, 45 ° 199360E, 100 m, EF19 sifted litter (leaf mold, rotten wood), tropical dry forest, 8–12 November 2002, Fisher and Griswold et al. (CASC PBI_OON 3774).

ETYMOLOGY: The species epithet is a name in apposition taken from the type locality.

DIAGNOSIS: Males of O. namoroka can be distinguished from those of other Opopaea species by the very thin and elongated cymbiobulbus, half the width of the patella, curving downward with a very large posteroproximal protuberance with a very large and elongated fenestra, a short and round anterior part bearing a sclerotized and compact extension whose tip folds on one side (figs. 683, 684, 699, 700, 703, 704, 707–714). Females of O. namoroka can be recognized by the medially thick scutal ridge that bears a short sclerotized bulge and by the more or less round parmula, very small, above scutal ridge (figs. 150, 722, 723).

DESCRIPTION: Male (holotype) (PBI_ OON 3774). Small species. Total length 1.02. Color: yellowish orange. Carapace: pars cephalica elevated with two widely separated humps each bearing two denticles (figs. 696, 697), carapace anteriorly narrowed to less than one third its maximum width. Carapace anterolateral corners without sclerotized triangular extension. Clypeus low, not rebordered. Chilum absent. Eyes medium sized to small. PME largest. ALE, PME, and PLE oval; PME darkened compared to other eyes, posterior eye row straight viewed from above, straight from front; ALE separated by their radius, ALE-PLE separated by less than ALE radius, PME touching throughout most of their length, PLE-PME separated by less than PME radius. Sternum longer than wide with radial furrows between coxae, surface without pits, shape of posterior part between coxae IV narrow, hexagonal (fig. 698), not constricted. Lateral margins of area between coxae III unmodified, without lumps, setae sparse, dark, needlelike, and densest laterally, originating from surface, without hair tufts (figs. 695–698). Cymbiobulbus elongated with posterior margin straight and with two posterior protuberances, a large smooth proximal one and a tiny, barely visible sclerotized distal one. Palpal femora half the size of palpal patella and inserted in the middle of the patella. Palpal fenestra large and elliptical, located at one third the length of the palpal tip; fenestra top flat, area before fenestra slightly elevat- ed (figs. 683, 684, 699, 700, 703, 704, 707– 714).

Female (allotype) (PBI_OON 3774). Total length 1.52. Abdomen round, not flattened. Postgynum depression arclike, more or less short, narrow and barely visible dorsally but with a median sclerotized ridge ventrally (figs. 685, 705, 706).

MEASUREMENTS: Male (holotype) (PBI_ OON 3774) TL: 1.02; CL: 0.54; CW: 0.46; CH: 0.22; AL: 0.76; AW: 0.51; ALE: 0.06; PME: 0.07; PLE: 0.07; EGW: 0.19; ALE- ALE: 0.03; ALE-PLE: 0.01; PME-PME: 0; PME-PLE: 0.01; CBL: 0.19; CBW: 0.07; CBL/PTL: 0.70; FI: 0.12.

Female (allotype) ( PBI _ OON 3774 ) TL: 1.52 ; CL: 0.64; CW: 0.49; CH: 0.25; AL: 0.9;

752. Epigynum, dorsal view. Scale bars: 0.1 mm.

AW: 0.68; ALE: 0.07; PME: 0.07; PLE: 0.06; EGW: 0.19; ALE-ALE: 0.04; ALE-PLE: 0.01; PME-PME: 0; PME-PLE: 0.02; EFL: 0.14; LAL: 0.06; PGI (LAL/EFL): 0.43; PDL/LAL: 0.50; PDW/EFL: 0.36.

VARIATION: Male: TL: 1.02–1.04; CL: 0.54– 0.60; CW: 0.46–0.48; AL: 0.76–0.86; AW: 0.51–0.68.

Female: TL: 1.40–1.52; CL: 0.54–0.64; CW: 0.46–0.50; AL: 0.86–0.9; AW: 0.74–0.76.

NATURAL HISTORY: O. namoroka was mostly collected in tropical dry forest at low elevation.

DISTRIBUTION: O. namoroka was found in northwestern Madagascar in the province of Mahajanga (Park National Namoroka, Androngonibe) (map 4).

OTHER MATERIAL EXAMINED: MAD- AGASCAR: Antananarivo: Tsimbazaza, S18.93036 °, E47.52693 °, general collecting, November 1946, C.J. Millot (PBI_OON 34310), 18, 5♀ (PBI_OON 34307), 1♀ (PBI_OON 34308), 1♀ (PBI_OON 35119), 18, 4♀. Ambohimanga, S20 ° 529, E 47 ° 369, general collecting, December 1946, C.J. Millot (PBI_OON 35121), 1♀. Mahajanga: Park National Namoroka, 17.8 km 329 °

WNW Vilanandro, 16 ° 229360S, 45 ° 199360E, 100 m, EF19 sifted litter (leaf mold, rotten wood), tropical dry forest, 8–12 November 2002, Fisher and Griswold, et al. (CASC PBI_OON 3774), 18, 4♀.