Misgolas campbelli, 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 : 55-57

publication ID	https://doi.org/ 10.3853/j.0067-1975.60.2008.1495
persistent identifier	https://treatment.plazi.org/id/CE27C928-FF82-591A-FC52-FB7595CEFB1A
treatment provided by	Felipe
scientific name	Misgolas campbelli
status	sp. nov.

Treatment

Misgolas campbelli View in CoL n.sp.

Figs 6A–I View Fig , 24A View Fig

Type material. HOLOTYPE?, AM KS44302 ,”Tuglo”, 48 km north of Singleton , N.S.W. (32°15'S 151°20'E), Jan. 1977, collector not known GoogleMaps . PARATYPE?, AM KS36599 , other details as for holotype .

Diagnosis. In male: medium sized brown spider, carapace length c. 7–7.4, retrodorsal surface of metatarsus IV without spines; venter pale with even distribution of small dark brown maculations as figured ( Fig. 6D View Fig ). Small spines in bilateral rows adjacent to scopula of tarsi I, if present, weak and to a maximum of 6 per row ( Fig. 6E,F View Fig ); tarsi II with bilateral rows small spines adjacent to scopula margins ( Fig. 6G,H View Fig ). Bilateral clusters of spines (2–17 spines per cluster) adjacent to distal edges of metatarsi I and II ( Fig. 6E–H View Fig ). Palpal bulb ( Fig. 6B,C View Fig ) with retrolateral embolic flange with 4 prominent folds and c. 3 minor folds; embolus tip sinuous from dorsal aspect, appears swollen from lateral aspect by small thin ventral flange suspended from tip. Embolic apophysis prodorsal, acute angled, placed near tip above small flange, best observed from dorsal aspect ( Fig. 6B View Fig ). Conformation of palp as figured ( Fig. 6A View Fig ). Female unknown.

Description

Male holotype ( Fig. 6A–I View Fig ). Size. Carapace length 7.35, width 6.37. Abdomen length 7.45, width 4.61. Colour. In alcohol chelicerae, carapace and limbs tan, unicolourous. Weak brown bilateral smudges on patella I and II. Abdomen dorsum brown with c. 6 pallid transverse chevrons. Venter pallid with even distribution of small dark brown maculations ( Fig. 6D View Fig ). Carapace. Edge fringed with black bristles which encroach onto posterior quarter of post foveal surface. Evidence of lost setae remains on caput arch and interstrial ridges. Fine setae with golden sheen absent. Remains of 3 bristles between PME; 7 bristles on clypeus. Weakly chitinous area extending onto pleuron membrane below clypeus with 4 pallid weak bristles. Fovea width 1.46, straight; posterior wall centrally divided by large deep pitted intrusion ( Fig. 6I View Fig ). Eyes. Placed on mound; area immediately adjacent to eyes black.Anterior width 1.20, posterior width 1.12, length 0.74, width/length ratio 1.62. Line joining posterior edges of ALE bisects AME. Posterior row straight in front, recurved behind. Chelicerae. Rastellum first row of 7(7) spines, c. 7(7) smaller spines scattered behind. Intercheliceral tumescence and fang groove detail not visible without damaging chelicerae. Labium. Bulbous, length 0.72, width 1.10. Labiosternal suture narrow, continuous. Maxillae c. 35(37) small, pointed, fusiform, anteroental cuspules, none surmounted by a fine hair. Sternum. Length 3.99, width 3.01. Sigilla round, first and second pair submarginal, third pair larger and 1.5 diameters from margin. Legs. Right leg IV missing. Tibia I with distal bifid apophysis; distal process with 2(2) short blunt spines, proximal process with 4(3) short mucronate spines and 1(1) long attenuate basal spine.

palp I II III IV femur 3.99 6.81 6.14 4.61 (6.47) patella 2.09 3.50 3.13 2.52 (3.19) tibia 3.63 4.54 4.18 2.76 (5.65) metatarsus — 5.52 4.67 3.87 (5.59) tarsus 1.82 3.19 2.94 2.39 (3.01) total 11.53 23.56 21.06 16.15 (23.91)

Palp ( Fig. 6A View Fig ). Cymbium with long, skewer-like, light brown, weak sub-erect spines distributed on distal half of d surface. RTA not swollen, not digitate; covered with d and rd short blunt spines which continue and become pointed on rv edge of tibial excavation; c. 13 longer pointed spines suspended from short straight DTA. TEM misshapen pallid, adjacent to RTA. TET indistinct on pl surface of TEM. Bulb. ( Fig. 6B,C View Fig ) Embolic rl flange with 4 prominent and 3 minor folds; margin gently convexly curved. Embolus tip sinuous from d aspect, appearing swollen from lateral aspect by thin flange suspended from tip. Embolic apophysis pd, acute angled, placed near tip above swelling, best observed from d aspect. Scopula. Complete on tarsi I and II; weak and incomplete on metatarsi I and II; absent on legs III and IV. Trichobothria. Palp: tarsi 9, tibia pd 5, rd 6. Leg I: tarsi 12, metatarsi 13, tibia pd 6, rd 6. Leg II: tarsi 11, metatarsi 13, tibia pd 6, rd 6. Leg III: tarsi 11, metatarsi 10, tibia pd 4, rd 5. Leg IV: tarsi 11, metatarsi 12, tibia pd 6, rd 6. Leg spination. Leg I ( Fig. 6E,F View Fig ): tarsi bilateral rows weak small spines adjacent to scopula pv 6, rv 4; metatarsi v 010, pl distal cluster of 17, rl distal cluster of 3; tibia v 012. Leg II ( Fig. 6G,H View Fig ): tarsi bilateral rows small spines adjacent to scopula pv 8, rv 22; metatarsi v 0111110, pl distal cluster of 11, rl distal cluster of 5. Leg III: tarsi v c. 38, metatarsi v c. 20, d 02220, tibia v 0113, pd 0110, rd 0011; patella pd 7. Leg IV (left leg): tarsi v c. 32; metatarsi v c. 14; tibia v 0112. Abdomen. Dorsum with sparse erect bristles and remains of bristles; underlying fine hairs. Venter covered with long weak brown bristles.

Remarks. The species may be confused with other species included in this work that also have the male bulb with a sinuous tip but is separable from them by reference to the position of the small, pd, embolic apophysis.

Etymology. The species is named in recognition of a good friend of GW, J. Bruce Campbell, late of Gerringong, NSW.

Distribution and natural history. ( Fig. 24A View Fig ) This species is known only from the type locality, c. 48 km North of the town of Singleton, N.S.W. The burrow is unknown.