Namea dahmsi Raven 1984
Creators: name: Rix, Michael G.
name: Wilson, Jeremy D.
name: Harvey, Mark S.
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Nemesiidae
Namea
Namea dahmsi

description: Namea dahmsi Raven, 1984
(Figs 7, 11, 13, 21 a–c)
Namea dahmsi Raven, 1984: 24, figs 17, 20, 40, 50, 62, 90, 99, 110. Rix et al., 2020: 707, figs 2, 3, 81–86, 90–102.
Type material. AUSTRALIA: Queensland: male holotype, Calamvale, Brisbane, February 1978, E. Dahms (QMB S800). Paratypes: 1 female (allotype), same data as holotype except March 1973 (QMB S801); 1 male, Mount Nebo, 14 May 1980, G. Snell (QMB S804); 1 male, same data except 23 January 1979, B. Barbey (QMB S803).
Select material examined. Australia: Queensland: 1 female, Clear Mountain Conservation Park, Clear Mountain, off Clear Mountain Road, 27°18’04”S, 152°52’44”E, hand collected from burrow, open forest, 218 m, 6 February 2019, M. Rix, J. Wilson (QMB S111381 DNA); 1 male, Clear Mountain, 20 km NW. of central Brisbane, 22 January 2009, D. Brown (QMB S88018); 1 male, Enoggera Reservoir, site 3, 27°27’S, 152°55’E, pitfall trap, rainforest, 100 m, 27 January–15 March 2000, G. Monteith, J. Holt (QMB S63050); 1 female, Mount Elliot Road, E. of Flinders Peak Conservation Park, 27°49’21”S, 152°50’32”E, hand collected from burrow, riparian creek line, 142 m, 15 May 2019, M. Rix, J. Wilson (QMB S111481 DNA).
Diagnosis. Males of Namea dahmsi can be distinguished from those of all other described congeners except N. callemonda Raven, 1984 by the morphology of the embolus, which is short and positioned terminally on the palpal bulb (Fig. 21b; see also Rix et al. 2020, figs 100–102). Males can be further distinguished from those of N. callemonda by the much shorter tibial macroseta v1 (Fig. 21a; cf. Rix et al. 2020, fig. 160), and by the presence of multiple proximal and/or medial macrosetae on the retroventral margin of the palpal tibia (Fig. 21b; cf. Rix et al. 2020, figs 161, 162).
Females are similar to those of N. callemonda and N. salanitri in having short receptacula (Fig. 21c), but can be distinguished by the inwardly-directed spermathecae (Fig. 21c; cf. Fig. 20c; see also Raven 1984, fig. 99) and the absence of epigastric lobes (Fig. 21c; cf. Fig. 20c).
Distribution. Namea dahmsi is a widespread species in south-eastern Queensland, where it has been recorded from open forest and dry rainforest habitats, in both lowland and upland areas (Rix et al. 2020). On the D’Aguilar Range it is known from Mount Nebo (Fig. 2) and Enoggera Reservoir, and has also been collected nearby at Clear Mountain.
Remarks. This species is unusual in being one of the few Namea species recorded from more open dry sclerophyll forest, although it is also known from dry rainforest and riparian habitats, and is generally rare and sparsely distributed throughout its range. The spiders are large and strongly built, with females and juveniles characterised by a dark body colouration, reflective gold carapace setae, and honey-red legs (Fig. 7). Males appear to be active throughout the year.
description: Published as part of Rix, Michael G., Wilson, Jeremy D. & Harvey, Mark S., 2020, The open-holed trapdoor spiders (Mygalomorphae: Anamidae: Namea) of Australia's D'Aguilar Range: revealing an unexpected subtropical hotspot of rainforest diversity, pp. 71-91 in Zootaxa 4861 (1) on pages 84-85, DOI: 10.11646/zootaxa.4861.1.5, http://zenodo.org/record/4414567