Selachochernes allodentatus, Mahnert & Ch-, 2011

Mahnert, Volker, 2011, New records of pseudoscorpions from the Juan Fernandez Islands (Chile), with the description of a new genus and three new species of Chernetidae (Arachnida: Pseudoscorpiones)., Revue suisse de Zoologie 118 (1), pp. 17-29 : 21-23

Selachochernes allodentatus sp. n. Figs 1-3

MATERIAL STUDIED: MHNG, holotype 3; Chile, Juan Fernandez Islands , Masatierra, forest above Puerto Ingles, 14.XI.1968, leg. H. Franz (Sa 197-198) .

DESCRIPTION: Cephalothorax 0.86 times longer than broad, granulate (granula small and regular, separated by equivalent of own diameter from each another), eyespots indistinct, 4 anterior and 6 posterior strongly clavate setae. Tergites I/II indistinctly divided, XI undivided, III-X divided, all densely granulate, chaetotaxy of halftergites: 3-3-3-5-5-5-5-5-5-5-10(total number; 2 medial discal setae), IV-X including an anterolateral seta; manducatory process with 3 marginal and 1 discal setae, suboral FIGS 1-3

Selachochernes allodentatus gen. n., sp. n., 3 holotype. (1-2) Left pedipalp. (3) Trichobothrial pattern, with sensillum proximal to st. Scale units 0.1 mm .

seta (see Judson, 1998) very short; pedipalpal coxa coarsely granulate, about 40 setae, coxa I 19, II 24, III 36, IV 42, all setae simple, acute; genital operculum with about 34 setae arranged in a semi-circle, the inner ones long and curved; genital entrance with 2/2 short simple and curved setae. Sternites divided, chaetotaxy of half-sternites III-XI: 6+4 discal setae (no suprastigmal seta)-6+1 suprastigmal seta-8-9-8-6-6-5-2 (2 short median setae); anal cone 2+2 setae. Pleural membrane granulate, intersegmental membrane striate.

Chelicera: 5 smooth setae on hand, fixed finger with 3 retrorse teeth and 3 subapical granula, lamina exterior well developed, movable finger with cone-like subapical tooth, subapical seta not reaching tip of galea, short galea with 4 subapical and apical branchlets; serrula exterior with 16 lamellae, rallum of 4 setae, only distal one dentate.

Pedipalps (Figs 1-2) coarsely granulate, the broadly clavate setae on coarser granula, setae on hand more slender; trochanter with rounded dorsal hump, 1.6 times longer than broad, femur abruptly enlarged, 2.4 times, patella 2.8 times longer than broad, club 2 times longer than broad and 2.5 times longer than pedicel, hand with pedicel 1.9 times longer than broad and as long as finger, chela with pedicel 3.6 times longer than broad; one long stout seta on paraxial face of fixed finger base, another long stout seta on dorsal face of fixed finger near trichobothria est / ist. Fixed finger with 5 spaced acute teeth followed (basal of est) by 9 low, retrorse, densely set teeth, 3 antiaxial accessory teeth (or 3 laterally displaced marginal teeth?), movable finger with 4 high, rounded and 10 low, mostly rounded teeth, no accessory teeth present; venom duct long, nodus ramosus near trichobothrium st. Trichobothria (Fig. 3): movable finger with 3 trichobothria only (probably sb lacking).

Leg I: femur 1.8 times longer than deep, patella 2.7 times longer than deep and 1.4 times longer than femur, tibia 3.7 times and tarsus 5.3 times longer than deep; leg IV: femur+patella 4.0 times longer than deep, tibia 4.9 times and tarsus 5.7 times longer than deep; undivided arolia as long as smooth claws.

MEASUREMENTS (in mm): Body length 1.8; cephalothorax 0.59/0.69; pedipalps: trochanter 0.33/0.21, femur 0.59/0.24, patella 0.51/0.18, hand with pedicel 0.41/0.22, pedicel length 0.06, finger length 0.42, chela length 0.78; leg I: femur 0.19/0.11, patella 0.26/0.10, tibia 0.27/0.07, tarsus 0.28/0.05; leg IV: femur+patella 0.50/0.12, tibia 0.38/0.08, tarsus 0.33/0.06.