Opopaea betioky, 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 : 82-85

Opopaea betioky , new species

Figures 21, 32, 419–451; map 3

TYPES: Male holotype and female allotype from Toliara province: 26.19 km ENE Betioky, RS Beza Mahafaly, 23 ° 39918.20S, 44 ° 37958.80E, 147 m, pitfalls, gallery forest, 18 January 2009, D.Andriamalala C. Griswold, G. Hormiga, A. Saucedo, N. Scharff and H. Wood (CASC. PBI_OON 35228).

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

DIAGNOSIS: Males of O. betioky can most easily be distinguished from those of other Opopaea species by the posterodistal margin of their cymbiobulbus, which is thin, flattened, and sharp like a blade, and which continues toward the tip into a short, straight, forward-pointing sclerotized extension (figs. 435–436, 439–440). Females of O. betioky can be recognized by a thin and divided scutal ridge, sclerotized, and bearing medially a small parmula, whose base is more or less round and whose tip is more or less cylindrical (figs. 421, 441, 442).

DESCRIPTION: Male (holotype) (PBI_ OON 35228). Small to medium-sized species. Total length 1.43. Color: yellowish orange to yellowish brown. Carapace: pars cephalica not elevated posteriorly with one row of two sets of two denticles and a hair (figs. 432, 433), carapace anteriorly narrowed to about one third its maximum width. Carapace anterolateral corners without sclerotized triangular extension. Clypeus low, not rebordered. Chilum absent. Eyes medium sized. ALE largest. ALE oval, PME and PLE circular; PME darkened compared to other eyes, posterior eye row straight viewed from above, slightly procurved from front; ALE separated by almost 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 smooth and hairy, without pits, shape of posterior part between coxae IV more or less wide and hexagonal (fig. 434). Area between coxae III unmodified, without lumps; setae abundant, dark, needlelike, evenly distributed, originating from surface, without hair tufts (figs. 431–434). Palp cymbiobulbus shorter than patella, posteri- or margin with two protuberances, one large and proximal and one small, sharp, and distal. Palpal femora inserted almost medially to patella. Fenestra round, located at one third of the palp, top of fenestra not raised, area before fenestra more or less round and sclerotized toward the tip (figs. 419–420, 435–436, 439–440, 443–451).

Female (allotype) (PBI_OON 35228). Total length 1.57. Yellowish orange to yellowish brown, abdomen oval, and not flattened laterally toward posterior end, opercula large

but not darkened (figs. 421, 441, 442). Postgynum depression very short, narrow, and not sclerotized (figs. 421, 422–430).

MEASUREMENTS: Male (holotype) ( PBI _ OON 35228). TL: 1.43 ; CL: 0.61; CW: 0.49; CH: 0.24; AL: 0.87; AW: 0.54; ALE: 0.07; PME: 0.06; PLE: 0.06; EGW: 0.20; ALE- ALE: 0.03; ALE-PLE: 0.01; PME-PME: 0; PLE-PME: 0; CBL: 0.18; CBW: 0.07; CBL/ PTL: 0.78; FI: 0.11.

Female (allotype) ( PBI _OON 35228). TL: 1.57 ; CL: 0.61; CW: 0.47; CH: 0.25; AL: 0.95; AW: 0.60; ALE: 0.06; PME: 0.05; PLE: 0.05; EGW: 0.17; ALE-ALE: 0.03; ALE-PLE: 0; PME-PME: 0; PLE-PME: 0.01; EFL: 0.14; LAL: 0.06; PGI (LAL/EFL): 0.43; PDL/ LAL: 0.66; PDW/EFL: 0.43.

VARIATION: Male: TL: 1.33–1.43; CL: 0.61–0.61; CW: 0.47–0.49; AL: 0.77–0.87; AW: 0.48–0.54.

Female: TL: 1.44–1.57; CL: 0.61–0.63; CW: 0.47–0.49; AL: 0.87–0.95; AW: 0.58–0.60.

NATURAL HISTORY: O. betioky was mostly found in gallery forest, tropical deciduous forest from 147–159 m elevations.

DISTRIBUTION: O. betioky was mostly found in the south and southwestern regions of Madagascar in the provinces of Toliara and Mahajanga (Beza Mahafaly, Ankarafantsika) (map 3).

OTHER MATERIAL EXAMINED: MADA- GASCAR: Toliara: 26.19 km ENE Betioky, RS Beza Mahafaly, 23 ° 39918.20S, 44 ° 37958.80E, 147 m, winklers, gallery forest, 18 January 2009, D. Andriamalala, C. Griswold, G. Hormiga, A. Saucedo, N. Scharff and H. Wood (CASC PBI_OON 35242) 1♀. (CASC PBI_OON 35228), 18, 3♀ (CASC. PBI_OON 35226), 18, 1♀ (AMNH PBI_OON 35200), 1♀ (CASC PBI_OON 00035230), 1♀ (CASC PBI_OON 35201), 1♀ (CASC PBI_OON 34354), 1♀. Mahajanga: 28.87 km SSE Marovoay, PN Ankarafantsika, 16 ° 199100S, 46 ° 48925.10E, 159 m, pitfalls, secondary tropical deciduous forest, 26 January 2009, D. Andriamalala, C. Griswold, G. Hormiga, A. Saucedo, N. Scharff and H. Wood (CASC PBI_OON 35225), 1♀.