Macroctenus vandenspiegeli, Henrard & Jocqué, 2017

MACROCTENUS VANDENSPIEGELI View in CoL SP. NOV. ( FIGS 21A – C, 22A – E View Figure 22 , 23A – E View Figure 23 )

http://zoobank.org/ urn:lsid:zoobank.org:act:C3A7B56A-5D09-4D04-A1D6-1FCA862BEEB4

Type material

Holotype, male: GUINEA: Mt. Nimba, Cavally river, 07 ° 40 0 N, 8 ° 26 0 W, 587 m asl, 23.II.2012, hand collecting at night, in cave, Van den Spiegel D., Henrard A., Allard C., Bimou P. & Sidibe M. ( DNA-N16 , MRAC 238909 View Materials ). GoogleMaps

Paraype: 1 ♀: GUINEA: Mt. Nimba, Seringbara, Kpeleyi Forest , 07 ° 39 0 N, 8 ° 26 0 W, 601 m asl, 21.II.2012, hand collecting, in cave, Van den Spiegel D., Henrard A., Allard C., Bimou P. & Sidibe M. ( DNA-N11 , MRAC 238908 View Materials ) GoogleMaps .

Etymology

The species name is a patronym in honour of Didier Van den Spiegel who headed the Mt. Nimba expeditions and collected many specimens of Ctenidae during the 2008, 2010 and 2011 field work.

Diagnosis

The male of Macroctenus vandenspiegeli sp. nov. shares the long ventral pilosity of the palp ( Figs 21A, B, 22A – E View Figure 22 ) with M. kingsleyi , but in the latter the RTA is sharper and has a double tooth at the inferior tip ( Fig. S6F, G View Figure 6 ), its MA is narrower in the middle than at the base ( Fig. S6H View Figure 6 ), whereas it is wider in the middle than at the base in M. vandenspiegeli ; the female is characterized by the epigyne ( Figs 21C, 23C View Figure 23 ) with a subcircular MS and the almost straight bluntly tipped LP. In M. kingsleyi , the MS is wider than long ( Fig. S6B, E View Figure 6 ), whereas it is as wide as long and almost perfectly circular in M. vandenspiegeli .

Description

Male (holotype). Total length 30.4. Carapace 15.9 long and 12.1 wide. Clypeus 0.72 high. Eye diameters: AME 0.69, ALE 0.30, PME 0.75, PLE 0.66. Coloration in ethanol ( Fig. 23A, B View Figure 23 ): carapace dark reddish brown, darker in eye region and on radiating striae, with dense golden pilosity; chelicerae black, mouthparts dark brown, sternum medium brown; legs: Fe, P and T uniform reddish brown, Mt and t black; abdomen dorsum pale to reddish brown with faint pale median stripe in anterior half; sides and venter medium brown, venter with two rows of small reddish apodemes. Carapace broad; eyes fairly small, clypeus relatively high. Chelicerae with three promarginal teeth, median larger; four retromarginal teeth, proximal distant from the remaining three, basal smallest; intermarginal denticles present. Leg measurements (second pair of legs missing): I: femur 17.9/ patella 7.2/ tibia 17.5/ metatarsus 16.0/ tarsus 5.7/ total 64.3; III: 14.2/ 6.1/ 11.8/ 13.9/ 4.1/ 50.0; IV: 19.2/ 6.1/ 16.0/ 21.4/ 4.7/ 67.4. Leg formula 41(2?)3. Leg spination: femur I pl1-1-1-1 d1-1-1 rl1-1-1-1, II pl1-1-1-1 d1- 1-1 rl1-1-1-1, III pl1-1-1-1 d1-1-1 rl1-1-1-1, IV pl1-1-1-1 d1-1-1 rl1-1-1-1; patella I pl1 rl1, II pl1 rl1, III pl1 rl1, IV pl1 rl1; tibia I v2-2-2-2 pl1-1 d1-1-1 rl1-1-1-1, II v2- 2-2-2 pl1-1 d1-1-1 rl1-1-1, III v2-2-2 pl1-1 d1-1-1 rl1-1, IV v2-2-2 pl1-1 d1-1-1 rl1-1; metatarsus I v2-2-1 pl1-1-1 rl1-1-1, II v2-2-1 pl1-1-1 rl1-1-1, III v2-2-2 pl1-1-1 d1-1 rl1-1-1, IV v2-2-2-1 pl1-1-1 d1-1-1 rl1-1-1; Mt IV not modified. Palp ( Figs 21A, B, 22A – E View Figure 22 ): tibia fairly short, ventrally with dense, long pale hair cover, with three spines; RTA dorsolateral, short, conical, with blunt tip pointing outward and small triangular ventral projection; cymbium with dense hair cover in distal part; with retrolateral concavity delimited by small dorsal and ventral swellings. MA ampullate; twice as long as wide. Embolus with broad base; flat distal part slightly widened at tip.

Female (paratype, DNA-N11, MRAC 238908). Total length 33.9. Carapace 16.3 long and 13.5 wide. Clypeus 1.25 high. Eye diameters: AME 0.69, ALE 0.46, PME 0.75, PLE 0.69. Coloration in ethanol: very similar to male. Chelicerae with three promarginal teeth, median larger; four retromarginal teeth, proximal tooth distant from the remaining three, basal smallest; intermarginal denticles present. Leg measurements (first legs missing): II: femur 14.2/ patella 7.8/ tibia 14.5/ metatarsus 14.8/ tarsus 3.7/ total 55.0; III: 12.6/ 6.4/ 11.4/ 13.2/ 3.8/ 47.4; IV: 16.8/ 6.1/ 13.8/ 18.2/ 5.5/ 60.4. Leg formula 4(1?)23. Leg spination: femur I pl1-1-1-1 d1-1-1 rl1-1-1-1, II pl1-1-1-1 d1-1-1 rl1-1-1-1, III pl1-1-1-1 d1-1-1 rl1-1-1-1, IV pl1- 1-1-1 d1-1-1 rl1-1-1-1; patella I pl1 rl1, II pl1 rl1, III pl1 rl1, IV pl1 rl1; tibia I v2-2-2-2 pl1-1 d1-1-1 rl1-1, II v2-2-2-2 pl1-1 d1-1 rl1-1-1, III v2-2-2 pl1-1 d1-1-1 rl1-1, IV v2-2-2 pl1-1 d1-1-1 rl1-1; metatarsus I v2-2- 2-2 pl1-1 d1-1 rl1-1-1, II v2-2 pl1 rl1, III v2-2-2 pl1- 1-1 d1-1 rl1-1-1, IV v2-1-1-2-1 pl1-1-1 d1-1-1 rl1-1-1; Mt IV not modified. Epigyne ( Figs 21C, 23C View Figure 23 ): MS with central plate almost perfectly round, slightly wider than long; narrow connections with rectangular anterior part and broad posterior transverse band. LS with bulky, straight and blunt LP. Vulva ( Fig. 23D, E View Figure 23 ) with large spermathecae close together, with two conspicuous atria .

Distribution

Only know from Mt. Nimba in Guinea.