Misgolas helensmithae, Wishart & Rowell, 2008

Wishart, Graham & Rowell, David M., 2008, Trapdoor Spiders of the Genus Misgolas (Mygalomorphae: Idiopidae) from Eastern New South Wales, With Notes on Genetic Variation, Records of the Australian Museum 60 (1), pp. 45-86 : 58-60

publication ID	https://doi.org/ 10.3853/j.0067-1975.60.2008.1495
persistent identifier	https://treatment.plazi.org/id/CE27C928-FF85-5919-FC11-F98797F8FAC7
treatment provided by	Felipe
scientific name	Misgolas helensmithae
status	sp. nov.

Treatment

Misgolas helensmithae View in CoL n.sp.

Figs 8A–J View Fig , 24A View Fig

Type material. HOLOTYPE?, AM KS48654 , Bulga State Forest , Homewoods Road, 2.8 km West of Knodingbul Road (31°37'S 152°07'E), 690 m, 4 Feb.–9 Apr. 1993, pit fall trap, site 57CR, M. Gray, G. Cassis GoogleMaps . PARATYPES ??: AM KS38642 , AM KS92875 , AM KS92876 , for all paratypes data as for holotype GoogleMaps .

Diagnosis. In male: medium-large sized dark tan spider, carapace length c. 7.3–8.4; retrodorsal surface of metatarsi IV with spines ( Fig. 8I View Fig ); venter entirely pallid ( Fig. 8J View Fig ). Tarsi I and II with bilateral rows of small spines adjacent to scopula; metatarsi I and II with bilateral distal clusters of spines ( Fig. 8E–H View Fig ). Palpal bulb ( Fig. 8B,C View Fig ) with retrolateral embolic flange with c. 20 minute folds; embolus straight from dorsal aspect, apophysis absent. Retrolateral tibial apophysis digitate; palpal tibia as figured ( Fig. 8A View Fig ). Female not known.

Description

Male holotype ( Fig. 8A–J View Fig ). Size. Carapace length 8.42, width 6.66. Abdomen length 6.63, width 4.42. Colour. In alcohol carapace, chelicerae and limbs dark tan, v surfaces much paler. Dark brown smudges absent on limbs. Sparse cover of prostrate pallid hairs on carapace, absent on limbs. Abdomen dorsum mottled dark brown bearing c. 5 pallid transverse chevrons. Venter entirely pallid. ( Fig. 8J View Fig ). Carapace. Edge fringed with black bristles which encroach onto posterior fifth of post foveal surface. Few small black bristles scattered on caput; line of 6 median bristles on caput arch; 2 bristles between PME, 5 bristles on clypeus; 3 small bristles on weakly chitinous pleuron below clypeus. Fovea width 1.51, gently recurved; posterior wall not pitted. Eyes. Raised on mound. Area immediately adjacent to eyes black excepting between ALE and between PME. Anterior width 1.23, posterior width 1.15, length 0.79, width/length ratio 1.56. Line joining posterior edges of ALE bisects AME. Posterior row straight in front, recurved behind. Chelicerae. Rastellum row of 5(6) spines; few smaller spines receding along anteroental edge of chelicerae. Intercheliceral tumescence distinct, white, not raised, bearing sparse cover of minute brown prostrate setae. Fang groove with 9(18) promarginal teeth and 15(13) smaller retromarginal/intermediate row teeth. Labium. Bulbous, length 0.74, width 1.41. Labio-sternal suture broad, narrowing centrally, divided. Maxillae c. 17(21) anteroental long weak attenuate cuspules. Sternum. Length 4.42, width 3.07. Sigilla all small, round: Anterior pairs submarginal, posterior pair twice diameter from margin. Legs. Tibia I with distal bifid apophysis. Distal process with 1(2) short spine. Proximal process with 3(3) longer spines; 1(1) megaspine rises from d surface of base of proximal process.

Palp I II III IV femur 3.99 7.00 6.69 6.14 7.74 patella 1.84 3.25 3.07 2.82 3.68 tibia 3.80 5.34 5.16 3.87 6.94 metatarsus — 6.08 5.53 5.22 7.18 tarsus 1.66 3.50 3.31 3.13 3.81 total 11.29 25.17 23.76 21.18 29.35 Palp ( Fig. 8A,D View Fig ). Cymbium with c. 32, many broken away, long, attenuate, anteriorly inclined spines distributed over distal third of d surface. RTA digitate centrally slightly swollen, d and rd surfaces covered with squat pointed spines; proximal half of rv edge of tibial excavation suspending c. 23 similar spines; distal half with a sparse brush of c. 15 longer spines terminating at end of short DTA. Small pointed TEM ( Fig. 8A View Fig ) with faint TET adjacent to RTA. Bulb. ( Fig. 8B,C View Fig ) Embolic rl flange with c. 21 minute folds, margin distally sharply convexly curved under embolus as if twisted. Embolus straight from d aspect, apophysis absent. Scopula. Complete on tarsi I and II, sparse distal remnants on metatarsi I and II, absent on legs III and IV. Trichobothria. Palp: tarsi 9, tibia pd 5, rd 5. Leg I: tarsi 10, metatarsi 12, tibia pd 5, rd 5. Leg II: tarsi 11, metatarsi 11, tibia pd 6, rd 6. Leg III: tarsi 12, metatarsi 10, tibia pd 6, rd 7. Leg IV: tarsi 11, metatarsi 15, tibia pd 7, rd 7. Leg spination. Leg I ( Fig. 8E,F View Fig ): tarsi pv line of 9 adjacent scopula margin, rv line of 17 adjacent scopula margin; metatarsi pv distal cluster of 12, rv cluster of 12 on distal three-quarters; tibia v 0101123, pd 01010; patella pd 1. Leg II ( Fig. 8G,H View Fig ): tarsi pv line of 12 adjacent scopula margin, rv line of 14 adjacent scopula margin; metatarsi pv cluster of 9 on distal two-thirds, rv cluster of 14 on distal four-fifths, pd 010; tibia v 011114, pd 011110; patella pd 1. Leg III: tarsi v 25 scattered; metatarsi v 14 scattered, d 002220; tibia v 7 scattered, pl 0110, rl 0110; patella pd 4. Leg IV ( Fig. 8I View Fig ): tarsi v 24 scattered; metatarsi v 13 scattered, rd 001010; tibia v 7 scattered. Abdomen. Median band of c. 12 long bristles on dorsum; sparse cover short brown bristles with underlying prostrate setae. Venter covered with small brown bristles.

Etymology. The species is named in recognition of arachnologist Dr Helen Smith of the Australian Museum, Sydney.

Distribution and natural history. ( Fig. 24A View Fig ) This species is known only from the type locality, the Bulga State Forest, c. 30 km ENE of the town of Comboyne, NSW. The burrow is unknown.