Perictenus molecula, Henrard & Jocqué, 2017

PERICTENUS MOLECULA View in CoL SP. NOV. ( FIGS 28A, B View Figure 28 , 29A – C, 30A – C, 31A – D View Figure 31 )

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Type material

Holotype, male: GUINEA: Mt. Nimba, Cavally river, 7 ° 40 0 N, 8 ° 26 0 W, 587 m asl, 23.II.2012, hand collecting at night, near the river, Van den Spiegel D., Henrard A., Allard C., Bimou P. & Sidibe M. (DNA- N37, MRAC 238944 View Materials ). GoogleMaps

Paratypes: GUINEA: 2 ♀: Mt. Nimba , near campsite SMFG, near City 2, 7 ° 42 0 N, 8 ° 24 0 W, 552 m asl, 08.III.2012, hand collecting at night in natural cave, on the ground near the rock, Van den Spiegel D., Henrard A., Allard C., Bimou P. & Sidibe M. ( DNA-N25 , MRAC 238953 View Materials ) GoogleMaps ; 1 ♂: Mt. Nimba, Fouenyi Forest , 7 ° 37 0 N, 8 ° 28 0 W, 601 m asl, 1.III.2012, sieving litter, Van den Spiegel D., Henrard A., Allard C., Bimou P. & Sidibe M. ( MRAC 238755 View Materials ) GoogleMaps ; 1 ♂: Mt. Nimba, Seringbara, Isro Forest , 7 ° 38 0 N, 8 ° 27 0 W, 593 m asl, 24.II.2012, sieving, soil litter, Van den Spiegel D., Henrard A., Allard C., Bimou P. & Sidibe M. ( MRAC 238906 View Materials ) GoogleMaps ; 1 ♂: Mt. Nimba, Nounouyi Savannah , near Nounouyi River , 7 ° 41 0 N, 8 ° 26 0 W, 568 m asl, 20.II.2012, hand collecting, near the river, Van den Spiegel D., Henrard A., Allard C., Bimou P. & Sidibe M. ( MRAC 238942 View Materials ) GoogleMaps ; 1 ♀: Mt. Nimba, Heyetouna Forest , 7 ° 39 0 N, 8 ° 19 0 W, 687 m asl, 18.III.2012, sieving, soil litter, Van den Spiegel D., Henrard A., Allard C., Bimou P. & Sidibe M. ( MRAC 238952 View Materials ) GoogleMaps ; 1 ♀: Mt. Nimba , near campsite SMFG, near City 2, 7 ° 42 0 N, 8 ° 24 0 W, 552 m asl, 3.II.2012, hand collecting in front of natural cave at night, Van den Spiegel D., Henrard A., Allard C., Bimou P. & Sidibe M. ( MRAC 238954 View Materials ) GoogleMaps ; 1 ♂: Mt. Nimba, Gba valley, 7 ° 41 0 N, 8 ° 24 0 W, 630 m asl, 31.I.2012, primary forest, hand collecting, Van den Spiegel D., Henrard A., Allard C., Bimou P. & Sidibe M. ( MRAC 241325 View Materials ) GoogleMaps .

Etymology

The species name is a noun in apposition referring to the fact that males and females were matched because of molecular data.

Diagnosis

Males of Perictenus molecula are recognized by the palp ( Figs 29A, B, 30A – C) with a basal retrolateral extension of the cymbium, the very short, blunt RTA originating near the base of the tibia, the embolus with a small dorsal appendage, and the almost rounded MA. The female is recognized by the broad oval epigyne ( Figs 29C, 31A – D View Figure 31 ), conspicuously constricted in front, with large, ampullate spermathecae close together.

Description

Male ( holotype). Total length 11.7. Carapace 6.2 long and 5.2 wide. Clypeus 0.30 high. Eye diameters: AME 0.23, ALE 0.22, PME 0.26, PLE 0.34. Coloration ( Fig. 28A View Figure 28 ): carapace medium brown with slightly paler diamond-shaped area, faintly delimited by dark stripes, just behind eyes; with fairly thick cover of silvery setae near PME and on sides. Chelicerae dark brown, with paler brown stripes near base; sternum reddish brown, slightly darker along margin, with dark setae. Abdomen: dorsum black with reddish brown central band in anterior half, flanked by two shorter lateral bands, followed by three faint reddish brown chevrons; four reddish apodemes; sides cream with numerous short dark stripes; venter dark grey with four rows of apodemes each surrounded by small cream spot. Spinnerets yellow. Chelicerae with three promarginal teeth, median slightly larger; four retromarginal subequal teeth; without intermarginal denticles. Leg measurements: I: femur 5.5/ patella 2.6/ tibia 4.8/ metatarsus 5.0/ tarsus 2.1/ total 20.0; II: 5.1/ 2.4/ 4.3/ 4.6/ 1.8/ 18.2; III: 4.5/ 2.1/ 3.5/ 4.2/ 1.4/ 15.7; IV: 5.7/ 2.1/ 4.8/4.5/ 2.6/19.7. Leg formula 1423. Leg spination: femur I pl1-1-1 d1-1-1 rl1-1-1, II pl1-1-1-1 d1-1-1 rl1-1-1, III pl1-1-1-1 d1-1-1 rl1-1-1-1, IV pl1-1-1 d1-1-1 rl1-1; patella I pl1 rl1, II pl1 rl1, III pl1 rl1, IV pl1 rl1; tibia I v2-2-2-2-2 pl1-1 d1 rl1-1, II v2-2-2-2 pl1 d1 rl1-1, III v2-2-2 pl1-1 d1-1-1 rl1-1, IV v2-2-2 pl1-1 d1-1-1 rl1-1; metatarsus I v1-2-2 pl1-1-1 rl1-1-1, II v2-2-2 pl1-1-1 rl1-1-1, III v2-2-2 pl1-1-1-1 d1-2 rl1-1- 1, IV v2-2-2-2 pl1-1 d1-2 rl1-1-1; Mt IV unmodified; scopulae on t and Mt I and II on t III and IV. Palp ( Figs 29A, B, 30A – C): tibia with one large dorsal and one large ventral seta; RTA short, blunt, originating near posterior margin; distal margin of tibia with retrolateral incision and large, rounded, ventral projection fitting basal concavity of cymbium; cymbium short, curved, with large conical extension near base, pointing laterad; distal tegular membrane triangular; embolus flat, curved, with small retrolateral blunt appendage pointing dorsally. MA subcircular with posterior margin slightly concave, distal margin with dorsal lip.

Female ( paratype, together with holotype). Total length 13.1. Carapace 6.5 long and 5.3 wide. Clypeus 0.36 high. Eye diameters: AME 0.28, ALE 0.23, PME 0.30, PLE 0.34. Coloration ( Fig. 28B View Figure 28 ) as in male but pattern less well pronounced, particularly on abdomen: dorsal pattern faint without chevrons, venter grey with poorly delimited spots; chelicerae uniform dark brown; legs: uniform pale brown at base to dark brown at extremity. Chelicerae with three promarginal teeth, median larger; four retromarginal subequal teeth; without intermarginal denticles. Leg measurements: I: femur 4.5/ patella 2.5/ tibia 3.8/ metatarsus 3.7/ tarsus 1.4/ total 15.9; II: 4.4/ 2.3/ 3.3/ 2.3/ 1.21/ 14.6; III: 3.9/ 2.0/ 2.8/ 2.9/ 1.1/ 12.5; IV: 5.0/ 2.1/ 4.1/ 5.3/ 1.8/ 18.3. Leg formula 4123. Leg spination: femur I pl1-1 d1-1, II pl1-1 d1-1-1 rl1-1, III pl1-1-1 d1-1-1 rl1-1-1, IV pl1-1 d1-1-1; patella I, II none, III pl1 rl1, IV pl1 rl1; tibia I v2-2-2-2-2, II v2- 2-2-2-2, III v2-2-2 pl1-1 d1-1 rl1-1, IV v2-2-2 pl1-1 d1-1 rl1-1; metatarsus I v2-2-2, II v2-2-2, III v2-2-2 pl1-1-1 rl1-1-1, IV v2-1-2-2 pl1-1-1 rl1-1-1; Mt IV unmodified; scopulae on t, Mt and distal half of T I, on Mt and t II and on t III and IV. Epigyne ( Figs 29C, 31A, B View Figure 31 ) with broad plate, conspicuously constricted in front, with rounded sides; with pale yellow centre and broad dark sides; LP situated behind posterior margin of MS, strongly curved inwards, with sharp tip. Vulva ( Fig. 31C, D View Figure 31 ) with copulatory ducts very short; spermathecae large, ampullate, oblique, almost touching anteriorly.

Distribution

Only know from Mt. Nimba in Guinea.