Trapdoor Spiders of the Genus Misgolas (Mygalomorphae: Idiopidae) from Eastern New South Wales, With Notes on Genetic Variation Author Wishart, Graham Author Rowell, David M. text Records of the Australian Museum 2008 2008-06-25 60 1 45 86 http://dx.doi.org/10.3853/j.0067-1975.60.2008.1495 journal article 10.3853/j.0067-1975.60.2008.1495 2201-4349 5240070 Misgolas yorkmainae n.sp. Figs 7A–J , 24A Type material . HOLOTYPE ? , AM KS38616 , Kerewong State Forest , nr Lorne , ( 31°36'S 152°34'E ), 15 July 1979 , pit fall trap field No. 1600, D. Milledge . PARATYPES ?? : AM KS1553 , Kerewong SF, nr Lorne , site 108, Kendall Forest Management Area , subtropical rainforest ( 31°36'S 152°34'E ), 28 May 1978 , pit fall trap field No. 1167, D. Milledge . AM KS5419 , Kerewong SF, nr Lorne , site 108(2), ( 31°36'S 152°34'E ), 15 July 1979 , pit fall trap field No. 1597, D. Milledge . AM KS50020 , Lorne SF, nr Lorne , site 86(3), 31°35'S 152°37'E , 15 July 1979 , pit fall trap field No. 1593, D. Milledge . AM KS86230 , all details as for paratype AM KS5419 . All type specimens brittle & easily damaged, possibly first preserved in formalin . Selection of other material examined . ?? , AM KS38615 , Bulga State Forest , Bobbin Fire Trail , 100 m from Padmans Road ( 31°37'S 152°10'E ), 620 m , 4 Feb.–9 Apr. 1993 , pit fall trap site 57BM, M. Gray , G. Cassis . AM KS48653 , data as for AM KS38615 . AM KS38657 , Mt. Boss State Forest , 17 1040, North Plateau Rd. at Plateau Beech Picnic Area . Small gully near picnic area end of Plateau Rd. ( 31°10'S 152°19'E ), 4 Feb.–9 Apr. 1993 , pit fall trap site 32BG, M. Gray , G. Cassis. AM KS38661 , Mt. Boss State Forest , 17 1120, North Plateau Rd. about 1.5 km by track from Plateau Beech Picnic Area ( 31°10'S 152°19'E ), 4 Feb.–9 Apr. 1993 , pit fall trap site 32BM, M. Gray , G. Cassis . Diagnosis . In male: large dark tan spiders, carapace length c. 8.3–9.1; retrodorsal surface of metatarsi IV with at least 2 spines ( Fig. 7I ); venter entirely pallid ( Fig. 7J ). Bilateral rows of small spines adjacent to scopula on tarsi I and II; bilateral small clusters of spines near distal edges metatarsi I and II ( Fig. 7E–H ). Palpal bulb ( Fig. 7B,C ) embolic flange with c. 10 minute folds; embolus with prolateral bend near tip, apophysis absent. Retrolateral tibial apophysis abruptly swollen midway, distal tibial apophysis massive, cymbium spines strong, attenuate, sub erect ( Fig. 7A,D ). Female not known. Description Male holotype ( Fig. 7A–J ). Size . Carapace length 8.82, width 7.35. Abdomen length 7.64, width 5.00. Colour . In alcohol limbs and carapace dark tan; dark brown smudges absent from lateral limb surfaces. Abdomen dorsum dark brown with 6 pallid transverse chevrons. Sparse fine pallid hairs most concentrated on carapace near perimeter & extending onto coxae.Venter entirely pallid. Carapace . Edge fringed with many long black bristles which extend onto a raised post foveal surface. Line of c. 9 (some rubbed off) median bristles on caput arch. Group of 6 bristles between PME, 7 bristles on clypeus. Area below clypeus on pleuron membrane not chitinous, without setae. Fovea width 1.43, deep, slightly procurved, edges recurved; posterior wall centrally divided by two pitted intrusions. Eyes . Raised on mound. Area immediately adjacent to eyes black; anterior width 1.56, posterior width 1.48, length 0.96, width/length ratio 1.63. Line joining posterior edges of ALE transects anterior third of AME. Posterior row recurved in front and behind. Chelicerae . Rastellum row of 6(6) strong spines, few smaller spines retreat along pd edges. Intercheliceral tumescence not examined. Fang groove with 9(8) promarginal teeth & 12(12) smaller retromarginal/intermediate row teeth. Labium . Bulbous, raised, length 0.87, width 1.05. Labio-sternal suture broad, medially divided. Maxillae c. 4–5 (4–5) anteroental basally thickened setae in lieu of developed cuspules. Sternum . Length 4.97, width 3.75. Sigilla, anterior pairs small, round, posterior pair larger, ovate, all their own diameter from margin. Legs . Tibia I with distal bifid apophysis; both processes “stump-like” with 2(2) short blunt spines. palp I II III IV femur 4.78 8.53 8.04 6.88 8.63 patella 2.21 4.41 4.11 3.32 4.11 tibia 4.35 6.276.14 4.35 7.84 metatarsus — 6.96 6.32 5.89 8.13 tarsus 2.03 3.52 3.44 3.44 4.05 total 13.37 29.69 28.05 23.88 32.76 Palp ( Fig. 7A,D ). Cymbium with 37(33) strong, attenuate, sub-erect spines covering anterior half of d surface. RTA abruptly swollen midway, d and rd surfaces covered with short pointed spines; rv edge of tibial excavation and straight massive DTA suspends brush of longer spines. TEM prominent, pallid, adjacent to RTA; TET not seen. Bulb . ( Fig. 7B,C ). Embolic rl flange with c. 10 minute folds, margin distally sharply convex curved under embolus as if twisted; embolus with pl bend near tip, apophysis absent. Scopula . Complete on tarsi I and II; small remnants on metatarsi I and II; absent on legs III and IV. Trichobothria . Palp: tarsi 11, tibia pd 6, rd 6. Leg I: tarsi 13, metatarsi 12, tibia pd 6, rd 6. Leg II: tarsi 12, metatarsi 11, tibia pd 7, rd 7. Leg III: tarsi 12, metatarsi 12, tibia pd 7, rd 7. Leg IV: tarsi 12, metatarsi 13, tibia pd 9, rd 8. Leg spination . Leg I ( Fig. 7E,F ): tarsi bilateral rows small spines adjacent to scopula pv 12, rv 16; metatarsi apical pv cluster of 12, rv band of 18; tibia pv 011223. Leg II ( Fig. 7G,H ): tarsi bilateral rows small spines adjacent to scopula pv 16, rv 23; metatarsi pv 011cluster of 9, rv band of 11 including apical cluster of 8, pd 010; tibia v 0111112. Leg III: tarsi v 62; metatarsi v 21, pd 011110, rd 010110; tibia pl 0110, rl 0110; patella pd 2. Leg IV ( Fig. 7I ): tarsi v 48; metatarsi v 25, rd 001010; tibia v 8, rl 01110. Abdomen . Dorsum covered with long brown bristles and underlying fine pallid hairs. Venter covered by short brown bristles. Fig. 7. Misgolas yorkmainae n.sp. A–J ? , holotype AM KS38616. ( A ), right palp retrolateral. ( B,C ), right bulb: B , dorsal; C , prolateral. ( D ), left cymbium dorsal. ( E,F ), right tarsus and metatarsus I: E , prolateral; F , retrolateral. ( G,H ), right tarsus and metatarsus II: G , prolateral; H , retrolateral. ( I ), right tarsus and metatarsus IV retrolateral. ( J ), venter. Etymology . The species is named in recognition of Dr Barbara York Main, doyenne of Australian trapdoor spiders. Distribution and natural history . ( Fig. 24A ) This species is known only from the type locality, the Kerewong State Forest, near the town of Lorne, N.S.W. The burrow is unknown.