Misgolas paulaskewi, Wishart, 2011

Wishart, Graham, 2011, Trapdoor Spiders of the Genus Misgolas (Mygalomorphae: Idiopidae) in the Illawarra and South Coast Regions of New South Wales, Australia, Records of the Australian Museum 63 (1), pp. 33-51: 43-44

publication ID

http://doi.org/ 10.3853/j.0067-1975.63.2011.1553

persistent identifier

http://treatment.plazi.org/id/823987EB-165E-0C06-62A7-FCC29868FDC9

treatment provided by

Felipe

scientific name

Misgolas paulaskewi
status

n.sp.

Misgolas paulaskewi   n.sp.

Figs 8A–I View Fig , 14C View Fig

Type material. HOLOTYPE ♂, AMS KS22400, 3 km north-west of Quaama near Bega, NSW (36°27'S 149°50'E), 5 Jul. 1992, Lynne Cook [New South Wales, Australia]. GoogleMaps  

Other material examined ♂, AMS KS2736, Bermagui, NSW, 23 km east of type locality (36°25'S 150°04'E), 24 Apr. 1979, M. Stevenson, [New South Wales, Australia] GoogleMaps   .

Diagnosis. In male: medium sized brown spider, carapace length c. 6.7–8.1, retrodorsal surface of metatarsus IV lack spines ( Fig. 8I View Fig ); venter pallid with some dark brown marks as figured ( Fig. 8D View Fig ); elongate bilateral leg blotches on legs I and II along full lengths of metatarsi, tibia and patella ( Fig. 8E–H View Fig ). Spines absent on tarsi I, II and III and ventral surface of tarsi IV. Palpal bulb ( Fig. 8B,C View Fig ) retrolateral embolic flange with c. 7 prominent folds, c. 2 minor folds; embolus with thornlike dorsal apophysis placed c. one third way from embolus tip; tip from dorsal aspect with prolateral bend. Conformation of palp as figured ( Fig. 8A View Fig ). Female not known.

Description

Male holotype ( Fig. 8A–I View Fig ). Size. Carapace length 6.75, width 5.83.Abdomen length 6.45, width 3.93. — Colour. In alcohol carapace, limbs and chelicerae brown. Elongate bilateral leg smudges along full lengths of metatarsi, tibia and patella I and II. Carapace covered with prostrate golden hairs. Abdomen dorsum pallid with dark brown maculations, transverse chevrons not evident. Venter pallid with sparse brown marks as figured ( Fig. 8D View Fig ). — Carapace. Edge fringed with black bristles; few smaller bristles encroach onto posterior fifth of post foveal surface; rows of small bristles adjacent to striae. Row of c. 16 black bristles on caput arch; 9 between PME; 11 on clypeus. Weakly chitinized area on pleuron membrane below clypeus with some fine golden setae. Fovea width 1.28, straight, deep, posterior wall not divided by pitted intrusion. — Eyes. Raised on a mound. Ocular area darker adjacent to eyes. Anterior width 1.23, posterior width 1.05, length 0.72, width/length ratio 1.71. Line joining posterior edges of ALE   tangential to anterior edges of AME. Posterior row straight in front, recurved behind. — Chelicerae. Rastellum front row of 7(6) spines, 6(7) smaller spines behind. Fang groove with 6(9) promarginal teeth and 13(10) smaller retromarginal/ intermediate row teeth. Pallid intercheliceral tumescence each with a dense tuft of distally inclined brown setae near proximal edge. — Labium. Bulbous, length 0.87, width 1.18. Labiosternal suture continuous, narrow midway. — Maxillae c. 44(46) antero-ental short blunt cuspules, none surmounted by a hair. — Sternum. Bulbous, length 3.83, width 3.12. Front and midrow sigilla small, round, one diameter from margin; left posterior sigilla larger c. one diameter from margin, right sigilla divided into two. — Legs. Tibia I with distal bifid apophysis; distal process with 2(2) short compact blunt spines, proximal process with row of 3(3) longer compact curved pointed spines.

Palp I II III IV Femur 4.36 7.12 6.32 5.03 6.82 Patella 1.84 3.32 3.01 3.01 2.95 Tibia 4.18 5.03 4.42 3.07 5.96 Metatarsus — 4.97 4.54 4.24 6.08 Tarsus 1.90 3.13 1.78 2.88 3.43 Total 12.28 23.57 20.07 18.23 25.24

Palp. ( Fig. 8A View Fig ) Distal half of cymbium d surface with many long attenuate anteriorly inclined spines. RTA midway with small rl swelling; d, rd and small rl swelling surfaces covered with pointed spines. Tibial excavation rv edge with 15 short smaller spines adjacent to a suspended brush of c. 20 longer curved pointed spines; 7 spines terminate hooked DTA. TEM pallid, adjacent to RTA, pl surface with indistinct TET. — Bulb. ( Fig. 8B,C View Fig ) Length 2.23; length from embolic apophysis to embolus tip (a) 0.26; length from embolic flange terminus to embolus tip (f) 0.61; a/f ratio 0.42. Embolic rl flange with 7 major folds, 2 minor folds, edge gently curved. Embolus with prominent d thorn-like apophysis placed nearer embolus tip than embolic flange; tip from d aspect with pl bend. — Scopula   . Complete on all tarsi; sparse incomplete on metatarsi I and II; absent on metatarsi III and IV. — Trichobothria. Palp: tarsi 7, tibia pd 5, rd 5. Leg I: tarsi 10, metatarsi 13, tibia pd 7, rd 7. Leg II: tarsi 10, metatarsi 12, tibia pd 6, rd 6. Leg III: tarsi 11, metatarsi 9, tibia pd 5, rd 5. Leg IV: tarsi 10, metatarsi 14, tibia pd 7, rd 7. — Leg spination. Leg I: metatarsi rv 010; tibia rv 01112, pl 010. Leg II: metatarsi rv 0010012; tibia v 0113, pd 001010. Leg III: metatarsi v 013, pl 001110, rl 001110; tibia v 0113, pl 0110, rl 0011; patella pd 6. Leg IV: tarsi pl 0110; metatarsi v 5 scattered; tibia v 0112. — Abdomen. Dorsum with cover small brown hairs and bristles underlying many erect long brown bristles.Venter covered with long weak erect brown bristles.

Etymology. The species is named in recognition of Paul Askew who, while my neighbour, provided valuable field assistance.

Distribution and natural history ( Fig. 14C View Fig ) This species is known from near the village of Quaama, New South Wales, Australia (type locality), and at the seaside town of Bermagui (36°25'S 150°04'E) NSW, 21 km to the east. The burrow is unknown.

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Idiopidae

Genus

Misgolas