Misgolas baehrae, 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 : 74-75

publication ID	https://doi.org/ 10.3853/j.0067-1975.60.2008.1495
persistent identifier	https://treatment.plazi.org/id/CE27C928-FF95-5908-FE96-FAD4925DFEAA
treatment provided by	Felipe
scientific name	Misgolas baehrae
status	sp. nov.

Treatment

Misgolas baehrae View in CoL n.sp.

Figs 18A–J View Fig , 24D View Fig

Type material. HOLOTYPE?, AM KS48642 , Chichester State Forest 300, Karuah River Crossing , Karuah River Road (32°06'S 151°42'E), 4 Feb.–9 Apr. 1993, pit fall trap site 35AG, M. Gray, G. Cassis GoogleMaps . PARATYPES ??, AM KS86224 , Chichester SF, 1.8 km north of ford on Karuah River Road (32°04'S 151°43'E), 4 Feb.–9 Apr. 1993, pit fall trap site 35 GoogleMaps AM, M. Gray, G. Cassis . AM KS86225 , Chichester SF (NA), on Mountain Road, 0.2 km south of junction with Kunungra Road (32°08'S 151°44'E), 4 Feb.–9 Apr. 1993, pit fall trap site 35CR, M. Gray, G. Cassis GoogleMaps . AM KS86226 , Chichester SF ( RM), 100 m north of trig. tower on Berrico Road (32°09'S 151°28'E), 4 Feb.–9 Apr. 1993, pit fall trap site 36CR, M. Gray, G. Cassis GoogleMaps .

Other material examined. The specimens AM KS36701 (32°08'S 151°26'E), AM KS36703 (32°09'S 151°27'E), AM KS36711 (32°09'S 151°29'E), AM KS36712 (32°09'S 151°29'E) and AM KS38601 (32°10'S 151°28'E) collected c GoogleMaps .

25 km west of type locality. Specimen AM KS86213 ( Bulga State Forest , Homewoods Rd, 2.8 km west of Knodingbul Rd [31°37'S 152°07'E], 690 m, 4 Feb.–9 Apr. 1993, pit fall trap site 57CR, M. Gray, G. Cassis) collected c. 90 km Nor Nor West of type locality GoogleMaps .

Diagnosis. In male: small sized tan spiders, carapace length c. 4.2–5.1; retrodorsal surface of metatarsi IV usually with two spines ( Fig. 18I View Fig ); venter pallid with dark brown pattern as figured ( Fig. 18J View Fig ). Palpal bulb retrolateral embolic flange with c. 6–7 fine folds; embolus straight, apophysis absent ( Fig. 18B,C View Fig ). Distal half of retroventral edge of tibial excavation to end of distal tibial apophysis suspends continuous brush of longer spines. Distal tibial apophysis straight horizontal. Cymbium bearing c. 14–20 long d attenuate spines projecting forward, almost horizontal ( Fig. 18A,D View Fig ). Conformation of palp as figured ( Fig. 18A View Fig ). Female not known.

Description

Male holotype ( Fig. 18A–J View Fig ). Size. Carapace length 5.03, width 3.97. Abdomen length 4.61, width 2.64. Colour. In alcohol all limbs and carapace medium tan; faint bilateral dark brown smudges on tibia, patella and femur of anterior limbs. Abdomen dorsum pallid densely mottled with dark brown; “chevrons” absent. Venter grey, apparently deteriorated, pattern not seen (discernible on paratype AM KS86224 as figured [ Fig. 18J View Fig ]). Carapace. Edge fringed with black bristles some extending onto post foveal surface. Line of c. 10 small bristles (some rubbed off) on caput arch. Group of four bristles between PME; group of 4 bristles on clypeus. Area extending onto pleuron below clypeus without setae. Fovea width 0.83, straight, deep, edges recurved, posterior wall centrally divided by pitted intrusion. Eyes. Raised on mound. Posterior half of ocular area adjacent to eyes black. Widths of anterior and posterior rows c. equal, 0.90 & 0.89 respectively. Eye group length 0.58, width/length ratio 1.55. Line joining posterior edges of ALE bisects AME. Posterior row straight in front, procurved behind. Chelicerae. Rastellum row of 6(5) spines; c. 5(5) smaller spines behind. Intercheliceral tumescence small, pallid. Fang groove with 7(7) promarginal teeth and 7(7) smaller retromarginal/intermediate row teeth. Labium. Bulbous, length 0.51, width 0.87. Labio-sternal suture broad, undivided. Maxillae c. 20(17) blunt cigar shaped anteroental cuspules. Sternum. Length 2.65, width 1.98. Sigilla all round; anterior pairs close to margin, posterior pair half diameter from margin. Legs. Tibia I with distal bifid apophysis; distal process with 2(2) short pointed spines, proximal process with 2(2) short blunt spines.

palp I II III IV femur 2.64 4.73 4.24 3.68 4.85 patella 1.18 2.27 2.15 1.78 2.33 tibia 2.61 3.44 3.19 2.27 4.61 metatarsus — 3.62 3.13 2.94 4.42 tarsus 1.18 2.27 2.09 1.90 2.45 total 7.61 16.33 14.80 12.57 18.66

Palp ( Fig. 18A View Fig ). Cymbium with c. 7(8) large and 7(8) smaller attenuate spines projecting forward from anterior half of d surface. RTA covered with short pointed d spines which continue around and onto rv edge of tibial excavation; c. midway on rv edge spines become longer and continue to end of straight horizontal DTA forming an extended brush. TEM prominent, pallid, adjacent to RTA, TET on pl surface. Bulb. ( Fig. 18B,C View Fig ) Embolic rl flange with c. 7 folds, margin distally sharply convexly curved under embolus as if twisted. Embolus straight, apophysis absent. Scopula. Complete on tarsi I, weak and complete on tarsi II, weak & incomplete on metatarsi I and II, absent on legs III and IV. Trichobothria. Palp: tarsi 7, tibia pd 4, rd 5. Leg I: tarsi 10, metatarsi 9, tibia pd 6, rd 6. Leg II: tarsi 9, metatarsi 9, tibia pd 5, rd 5. Leg III: tarsi 9, metatarsi 6, tibia pd 5, rd 5. Leg IV: tarsi 10, metatarsi 11, tibia pd 6, rd 6. Leg spination. Leg I ( Fig. 18E,F View Fig ): tarsi rv line of 4 small spines adjacent scopula; metatarsi pv distal group of 3, rv distal group of 5; tibia v 0122. Leg II ( Fig. 18G,H View Fig ): tarsi bilateral rows small spines adjacent scopula pv 6, rv 9; metatarsi v 14; tibia v 0123. Leg III: tarsi v 18; metatarsi v 11, d 02220; tibia v 0113, pl 0110, rl 00110; patella pd 3. Leg IV ( Fig. 18I View Fig ): tarsi v 18; metatarsi v 14, rd 0010010; tibia v 6, rd 01010. Abdomen. Dorsum with c. 27 long brown bristles in a broad median band; smaller bristles evenly scattered with underlying small bristles and hairs. Venter with cover of small bristles.

Etymology. The species is named in recognition of arachnologist, Dr Barbara Baehr, at the Queensland Museum, Brisbane, Australia.

Distribution and natural history ( Fig. 24D View Fig ). This spider is known only from the Chichester and Bulga State Forests, localities c. 90 km apart. The burrow is unknown.