Orchestina crypta, Henrard & Jocqué, 2012

Henrard, Arnaud & Jocqué, Rudy, 2012, 3284, Zootaxa 3284, pp. 1-104 : 40-45

Orchestina crypta new species

Figures 171–205, 607

TYPE: Holotype Male : Democratic Republic of the Congo, Luki Forest Reserve, -5.65000°, 13.06666°, old secondary forest, canopy, Sept. 22, 2007, De Bakker D., Michiels J.P. ( MRAC 228966 PBI _OON 33550).

ETYMOLOGY: Altough the species is well defined morphologically, it was first recognized and separated from O. communis of the same locality after molecular analysis of COI, hence its name.

DIAGNOSIS: The male of O. crypta is recognized by the very large bulbus ( Figs. 180–182), an embolus with small, dorsal, fin-shaped denticle ( Figs. 183, 199) and tibia I sinuous with a group of ventrobasal spines ( Figs. 174, 175, 202). The female can be recognized by the shape of the internal genitalia ( Fig. 184, 185) visible as a pyriform structure with two small protrusions pointing forward.

Note: The male of Orchestina foa Saaristo & van Harten, 2002 (material examined: MZT AA 3.005, paratypes ♂ ♀) also shares a sinuous tibia I with O. crypta but differs in lacking the ventral spines, and also in having a subocular structure between the PME and four symmetric, leaf shaped setae on the labium (the latter two characters cited here were not noticed by Saaristo & van Harten (2002)). The female of O. foa is clearly distinguished by the n-like sclerite in front of the epigastric sulcus (sensu Saaristo & van Harten, 2002, Ri3 sensu Burger et al., 2010).

MALE (PBI_OON 33550). Total length 1.18. CEPHALOTHORAX: Carapace ( Figs. 171–173, 175) yellowbrown, broadly oval in dorsal view (CW/CL ≈ 0.82), pars cephalica strongly elevated in lateral view, anteriorly narrowed to between 0.5 and 0.75 times its maximum width. Clypeus vertical in lateral view. Eyes ALE-PME touching, PME circular; PLE-PME separated by less than PME radius. Sternum longer than wide, yellow-brown, anterior margin unmodified, posterior margin extending posteriorly beyond anterior edges of coxae IV as single extension, with tiny dark sepia spots forming radiating dark stripes departing from anterior half of sternum; setae abundant, evenly scattered. Mouthparts: Chelicerae, endites and labium yellow. Chelicerae ( Fig. 193) straight; retromargin without teeth; setae with group of three strong, converging setae on distal part of each paturon. Labium ( Figs. 190, 191) triangular, anterior margin not indented at middle, same as sternum in sclerotization, with 6 or more setae on anterior margin, middle ones in raised sockets; with group of four needle like subdistal setae, central area with two pairs of flattened, leaf shaped setae and with a single small flattened seta in the centre. Endites ( Figs. 189, 190, 192) serrula absent, same as sternum in sclerotization, medially depressed and ridged along margin; anteromedian part constricted with extremity shaped as flattened paddle-like, roughly triangular plate. ABDO- MEN: ovoid; dorsum soft portions yellow-brown, with gray netlike pattern, with pale median chevron. Book lung covers small, round, with scaly texture ( Fig. 194). Pedicel unmodified. Epigastric area with transverse, frontal row of short setae. Spinnerets: ALS with four spigots, PMS with one spigot, PLS with two spigots. LEGS: yellow; patella plus tibia I longer than carapace (TL/CL ≈ 1,37), tibia I ( Figs. 174, 175, 202, 203) sinuous in lateral view, proximal part ventrally with group of 5 spines, distal part dorsally provided with unique pore visible with SEM; tarsi ( Fig. 204) bearing carpeted setae below claws. Tarsal organ ( Figs. 204, 205) pear shaped; palpal tarsal organ ( Fig. 201) situated on swelling delimited by prolateral groove, eye shaped, with three sensilla, with conical bulge near retrolateral margin. GENITALIA: Epigastric region ( Figs. 195, 196) with sperm pore small, narrow, slit-like, situated in front of anterior spiracles. Palp ( Figs. 180–183, 197–200) proximal segments yellow; with distal, slen- der part slightly curved, finely serrated; patella without prolateral row of ridges, attached to tibia sub-basally; tibia slightly more than two times as wide as femur; cymbium yellow, without distal patch of setae, setae densest on prolateral side; bulb yellow, stout, piriform, as wide as tibia; embolus dark, short, tapered, at angle of about 130° with long axis of bulbus; provided halfway with dorsal, triangular, fin-shaped denticle.

FEMALE (PBI_OON 33687). As in male except as noted. Total length 1.36. CEPHALOTHORAX ( Figs. 176– 179): Carapace ovoid in dorsal view (CW/CL ≈ 0.74). Mouthparts: Labium posterior corner stongly sclerotized. ABDOMEN: without long posterior extension, rounded posteriorly; dorsum soft portions with pale median chevron. Pedicel tube short. Spinnerets: ALS with five spigots. LEGS: patella plus tibia I near as long as carapace (TL/CL ≈ 1.05). GENITALIA ( Figs. 184–188). Ventral view: with bulb-shaped structure, slightly narrowed towards the back, provided with two short, ventral horns (Pr) in frontal part. Dorsal view: ARe probably fused at base with AUS, expanded and curved posteriorly; structure clearly n-shaped in lateral view showing ventral horns pointing forward; dorsolateral extensions (Ex) narrow proximally, spatulate distally; posterior receptaculum absent.

MATERIAL EXAMINED: DEMOCRATIC REPUBLIC OF THE CONGO: Kongo Central (formerly Bas- Congo ): Luki Biosphere (Nature) Reserve, Old secondary forest, canopy, -5.65000°, 13.06666°, Sept. 21, 2007, De Bakker D., Michiels J.P., 3♂ 12♀ ( MRAC 228781 PBI _OON 33288) ; as previous, Sept. 22, 2007, as previous, 1♂ paratype ( MRAC 228986 PBI _OON 33549) ; as previous, 1♂ paratype ( MRAC 228975 PBI _OON 33559) ; as previous, 1♂ paratype ( MRAC 228983 PBI _OON 33560) ; as previous, 1 ♀ paratype ( MRAC 228982 PBI _OON 33561) ; as previous, Sept. 22, 2007, 1♂ paratype ( MRAC 228978 PBI _OON 33562) ; as previous, 1♀ paratype

( MRAC 228985 PBI _OON 33563); as previous, 1♂ paratype ( MRAC 237141 PBI _OON 33564); as previous, Sept. 23, 2007, 2♂ 3♀ paratypes ( MRAC 228980 PBI _OON 33647); as previous, Dec. 01, 2007, 1♀ paratype ( MRAC 228993 PBI _OON 33679); as previous, Sept. 28, 2007, 6♀ paratypes ( MRAC 228992 PBI _OON 33680); as previous, Sept. 28, 2007, 4♂ paratypes ( MRAC 228991 PBI _OON 33681); as previous, Sept. 28, 2007, 1♂ paratypes ( MRAC 237140 PBI _OON 33446); as previous, Sept. 24, 2007, 6♂ 6♀ paratypes ( MRAC 228990 PBI _OON 33682); as previous, Sept. 25, 2007, 3♂ 3♀ paratypes ( MRAC 228989 PBI _OON 33683); as previous, Sept. 27, 2007, 1♂ paratype ( MRAC 228988 PBI _OON 33684); as previous, Sept. 27, 2007, 1♀ paratype ( MRAC 228987 PBI _OON 33686); as previous, Oct. 04, 2007, 1♀ paratype ( MRAC 228984 PBI _OON 33687); as previous, Sep. 19, 2007, 1♂ paratype ( MRAC 228981 PBI _OON 33688); as previous, Sep. 20, 2007, 2♂ 2♀ paratypes ( MRAC 228979 PBI _OON 33690); as previous, Sep. 26, 2007, 2♂ 2♀ paratypes ( MRAC 228977 PBI _OON 33691); as previous, Sep. 22, 2007, 15 ♂ 6 ♀ paratypes ( MRAC 228967 PBI _OON 33693) .

DISTRIBUTION: Only known from the Luki Biosphere Reserve in the western part of the Democratic Republic of the Congo ( Fig. 607).