Ambohima zoky, Griswold & Wood & Carmichael, 2012, Griswold & Wood & Carmichael, 2012

Griswold, Charles E., Wood, Hannah Marie & Carmichael, Anthea D., 2012, The lace web spiders (Araneae, Phyxelididae) of Madagascar: phylogeny, biogeography and taxonomy, Zoological Journal of the Linnean Society 164 (4), pp. 728-810: 795-796

publication ID

http://doi.org/ 10.1111/j.1096-3642.2011.00779.x

persistent identifier

http://treatment.plazi.org/id/97784765-6971-FFBA-0543-73A3B916FE9E

treatment provided by

Marcus

scientific name

Ambohima zoky
status

SP. NOV.

AMBOHIMA ZOKY   SP. NOV.

( FIGS 6D View Figure 6 , 7G View Figure 7 , 16A–E View Figure 16 , 25A–F View Figure 25 , 33D–F View Figure 33 , 36A, E View Figure 36 , 37A, E View Figure 37 , 43M–O View Figure 43 , 57 View Figure 57 )

Types: Holotype male ( CASENT9017018) from 7 km SE Antsiranana, Antsiranana Province, Madagascar, collected 17 August 1992 by Vince and Barbara Roth, deposited in CASC.  

Etymology: The specific name is from the Malagasy word for big one; a noun in apposition.

Diagnosis: Male with palp as in Figures 16A–C View Figure 16 and 25A–F View Figure 25 , embolic base convex, reservoir course across embolic base sinuate, embolus base narrow, width about equal to embolic loop, narrower than width of exposed conductor between embolic base and proximal turn of embolus. Female vulva as in Figures 16E View Figure 16 , 33E View Figure 33 and 37A, E View Figure 37 , spermathecal base simple, apex a tight corkscrew coil.

Male (Holotype): Total length 8.13. Markings as in Figure 6D View Figure 6 . Cephalothorax and legs pale yellowbrown, abdomen grey-brown, dorsum with anterior light longitudinal mark. Carapace 3.36 long, 2.54 wide; thoracic fovea 0.53 long, length 0.15 times that of carapace; clypeus 0.17 high; ocular area 0.50 long, 1.03 wide; ratio of eyes AM/AL/PM/PL, 1.10:1.40:1.00:1.10, diameter of PM 0.20. Chelicerae 1.33 long, slender, smooth, pro- and retromargins of fang furrow with five teeth. Sternum 1.84 long, 1.53 wide; labium 0.74 long, 0.58 wide; palpal coxa 1.19 long, 0.47 wide. Legs elongate, femur I length 2.42 times carapace length; metatarsi I and II prolateral concavity and clasping spines as in Figure 43M–O View Figure 43 , segments cylindrical basad of concavity. Leg measurements (femur + patella + tibia + metatarsus + tarsus = [total]): I: 8.11 + 1.69 + 8.44 + 7.88 + 3.19 = [29.31]; II: 6.50 + 1.56 + 6.25 + 5.94 + 2.50 = [22.75]; III: 5.50 + 1.25 + 4.56 + 5.00 + 2.13 = [18.44]; IV: 7.19 + 1.56 + 6.50 + 7.06 + 2.50 = [24.81]; palp: 1.69 + 0.56 + 0.81 + (absent) + 1.44 = [4.50]. Palp as in Figures 16A–C View Figure 16 and 25A–F View Figure 25 ; femur with probasal row of five thorn-like setae; tibia with dorsal blade (DTA) broad apically, prolateral hook (PTA) long, tapering to acute point; cymbium length 1.40 times width; palpal bulb length 1.45 times width, embolic base convex, reservoir course across embolic base sinuate, embolus base narrow, width about equal to embolic loop, narrower than width of exposed conductor between embolic base and proximal turn of embolus.

Female (Montagne d’Ambre, CASENT9020320): Total length 9.70. Markings as in Figure 7G View Figure 7 . Carapace 4.30 long, 2.90 wide; thoracic fovea length 0.14 times that of carapace; clypeus 0.32 high; ocular area 0.53 long, 1.36 wide; ratio of eyes AM/AL/PM/PL, 1.40:3.40:1.06:1.00, diameter of PM 0.16. Chelicerae 1.82 long, robust, smooth, pro- and retromargins of fang furrow with seven teeth. Sternum 2.16 long, 1.76 wide; labium 0.86 long, 0.76 wide; palpal coxa 1.40 long, 0.68 wide. Femur I length 1.40 times carapace length. Palpal femur with row of three anterobasal thorns. Calamistrum origin at 0.45 from metatarsus base, length 0.45 that of segment. Leg measurements (femur + patella + tibia + metatarsus + tarsus = [total]): I: 6.00 + 1.65 + 5.45 + 5.10 + 2.50 = [20.70]; II: 4.90 + 1.50 + 3.90 + 3.75 + 1.95 = [16.00]; III: 4.00 + 1.25 + 2.90 + 3.20 + 1.60 = [12.95]; IV: 5.15 + 1.45 + 4.40 + 4.30 + 1.85 = [17.15]; palp: 1.70 + 0.70 + 1.00 + (absent) + 1.90 = [5.30]. Epigynum as in Figure 36A View Figure 36 ; vulva as in Figure 37A View Figure 37 , spermathecal base simple, apical coil of spermatheca makes two open spirals.

Variation (N = 5): Total length 8.00–10.80; carapace length 1.38–1.48 times width, height 0.30–0.45 times width; PER width 2.41–2.62 times OAL; OQP 1.08– 1.15 times OQA; clypeal height 1.53–2.13 times AM diameter; cheliceral length 5.41–6.77 times clypeal height; promargin of fang furrow with 6–7 teeth, retromargin of fang furrow with 5–7 teeth; sternum length 1.21–1.26 times width; femur I length 1.40– 1.51 times carapace length; metatarsus I length 1.19–1.33 times carapace length; epigyna as in Figures 16D View Figure 16 , 33D View Figure 33 and 36A, E View Figure 36 , vulvae is in Figures 16E View Figure 16 , 33E, F View Figure 33 and 37A, E View Figure 37 .

Natural history: Unknown. Distribution: Known only from far northern Madagascar ( Fig. 57 View Figure 57 ).

Material examined: MADAGASCAR: Antsiranana Prov. Montagne d’Ambre , 12°30′57.6″S, 49°11′04.8″E GoogleMaps   ,

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Phyxelididae

Genus

Ambohima