Misgolas wayorum, Wishart, 2006

Wishart, Graham, 2006, Trapdoor Spiders of the Genus Misgolas (Mygalomorphae: Idiopidae) in the Sydney Region, Australia, With Notes on Synonymies Attributed to M. rapax, Records of the Australian Museum 58 (1), pp. 1-18 : 14

Misgolas wayorum n.sp.

Figs. 8A–D , 12C

Material examined. HOLOTYPE Ƌ, AM KS50047 , Woolooware, NSW (34°03'S 151°09'E). 6 July, 1997, Mrs Heather Sercombe.

Diagnosis. In male: Small brown spider, carapace length c. 5.5; rd surface of metatarsi IV without spines; venter entirely pale ( Fig. 8D ). Embolus of bulb ( Fig. 8B,C ) narrow and sinuous, with pd distal apophysis; rl flange with 4 folds. Conformation of palp as figured ( Fig. 8A ). Female unknown.

Description

Male holotype ( Fig. 8A–D ). Size. Carapace length 5.51, width 4.26. Abdomen length 4.69, width 3.24. Colour. Chelicerae dark brown. Carapace brown, ocular area almost black, narrow bilateral dark band along caput arch. Legs dark brown with weak dark lateral smudges. Abdomen pallid; d surface with longitudinal dark band, 5 or 6 transverse bilateral bands; venter not patterned. Carapace. Edge fringed with black bristles, many encroach onto posterior half of post foveal surface. Line of 10 anteriorly inclined dark bristles on length of caput arch. Group of 5 anteriorly inclined bristles between PME; 4 large posteriorly inclined and a few small bristles on clypeus. Weakly chitinized area with some setae extends onto pleural membrane below clypeus. Fovea width 0.99, slightly recurved. Eyes. Raised on low tubercle; anterior width 0.95, posterior width 0.87, length 0.46, width/length ratio 2.06. Line joining posterior edge of ALE bisects AME. Posterior row straight. Chelicerae. Rastellum single row of 5(4) long strong spines. Intercheliceral tumescence clearly visible. Fang groove with 5(6) large promarginal teeth and 7(7) small retromarginal/intermediate row teeth. Fang keels not smooth. Labium. Bulbous, length 0.56, width 0.82. Labiosternal suture broad narrowing medially. Maxillae c. 20(16) antero-ental small, pointed cuspules most surmount- ed by fine hair. Sternum. Length 2.87, width 2.10. Sigilla all small, round, sub-marginal. Legs. Tibia I with apical bifid apophysis; both processes with 2(2) spines.

Palp I II III IV Femur 2.76 5.40 4.67 3.62 (5.28) Patella 1.28 2.64 2.33 1.84 (2.58) Tibia 2.73 4.23 3.56 2.27 (4.85) Metatarsus — 3.81 3.44 3.07 (4.60) Tarsus 1.18 2.39 2.27 2.15 (2.70) Total 7.95 18.47 16.27 12.95 (20.01)

Palp ( Fig. 8A ). Cymbium with many anteriorly inclined peg shaped spines distributed over distal half of d surface. RTA narrow, finger-like, covered with d and rd short fusiform spines which continue along rv edge of excavation becoming progressively longer and attenuate. DTA absent. TEM contiguous with RTA. Tibial excavation pv surface textured extending onto pallid TEM. Bulb ( Fig. 8B,C ). Embolus narrow and sinuous with pd distal apophysis; rl embolic flange, narrow with c. 5 folds, margin slightly convexly curved. Scopula . Weak on tarsi I, tarsi II, and distal 1 ⁄ 6 of metatarsi I; sparse on tarsi III. Trichobothria. Palp: tarsi 6, tibia pd3 rd4. Leg I: tarsi 9, metatarsi 9, tibia pd5 rd4. Leg II: tarsi 9, metatarsi 9, tibia pd4 rd4. Leg III: Tarsi 8, metatarsi 7, tibia pd4 rd3. Leg IV: tarsi (8), metatarsi (10), tibia pd(5) rd(5). Leg spination. Leg I: metatarsi v013; tibia v0112. Leg II: tarsi row of 14 small spines along rv edge of scopula; metatarsi v02113; tibia v0112. Leg III: tarsi v27; metatarsi v6, d00120; tibia v0112, rd0011; patella pd2. Leg IV: tarsi v(22), metatarsi v(10). Abdomen. Cover of fine hairs; broad d band of long setae reducing in size and extending laterally to venter.

Etymology. The species is named in recognition of the Way family ofYowie Bay, and collectors of many spider specimens.

Distribution and natural history ( Fig. 12C ). This spider is known only from the type location. It was found wandering in a house on the corner of Dolan’s and Caringbah Roads at Woolooware a suburb of Sydney situated on a peninsular between Botany Bay and Port Hacking. The area has been urbanized for some fifty years yet the type specimen is the only known example of the species. The burrow is unknown.

Figures

Fig. 8. Misgolas wayorum n.sp. (A–D) Ƌ, holotype AM KS50047.

Fig. 12. Species distribution of Misgolas species in the Sydney region (eastern Australia) based on material examined. Key to symbols for maps (A) and (B): O Misgolas gracilis; A M. melancholicus; Z M. villosus. Map (C): • M. beni; Z M. cliffi; Δ M. lynabra; M. maculosus; O M. michaeli; * M. rodi; A M. trangi; * M. wayorum.