Namea nebo, Rix & Wilson & Harvey, 2020

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, Zootaxa 4861 (1), pp. 71-91: 88-90

publication ID

https://doi.org/10.11646/zootaxa.4861.1.5

publication LSID

lsid:zoobank.org:pub:44321429-80FA-45AC-90D6-E3E13C961BFC

DOI

http://doi.org/10.5281/zenodo.4414562

persistent identifier

http://treatment.plazi.org/id/4213049D-94A4-41B9-8014-8335C2C77F6F

taxon LSID

lsid:zoobank.org:act:4213049D-94A4-41B9-8014-8335C2C77F6F

treatment provided by

Plazi

scientific name

Namea nebo
status

sp. nov.

Namea nebo   sp. nov.

( Figs 13 View FIGURE 13 , 16a, b View FIGURES 14–21 , 68–80 View FIGURES 68–77 View FIGURES 78-80 )

http://zoobank.org/?lsid= urn:lsid:zoobank.org:act:4213049D-94A4-41B9-8014-8335C2C77F6F

Namea sp   . ‘Nebo’ Rix et al., 2020: 683 View Cited Treatment , 686, figs 2, 3.

Type material. AUSTRALIA: Queensland: male holotype, Mount Nebo, D’Aguilar National Park, Boombana section, site 1, 27°24’06”S, 152°47’24”E, pitfall trap, rainforest, 440 m, 1–30 August 2004, QM Party ( QMB S65274 View Materials DNA) GoogleMaps   . Paratypes: 3 males, same data as holotype except 30 June–1 August 2004 ( QMB S67171 View Materials ) GoogleMaps   .

Diagnosis. Males of Namea nebo   can be distinguished from those of all other described congeners except N. bunya   and N. nigritarsus   by the following combination of four characters: embolus long, reflexed and whip like ( Figs 78–80 View FIGURES 78-80 ); retroventral margin of palpal tibia with single, isolated, proximal macroseta ( Figs 71, 72 View FIGURES 68–77 ); tibia I with prolateral (p) macrosetae ( Figs 75, 77 View FIGURES 68–77 ); and macroseta v1 on tibia I short, not reaching beyond ventro-distal margin of tibia I ( Fig. 77 View FIGURES 68–77 ). Males can be further distinguished from those of N. bunya   by the longer macroseta v1 on tibia I ( Fig. 77 View FIGURES 68–77 ; cf. Rix et al. 2020, fig. 121); and from those of N. nigritarsus   by the heart-shaped palpal bulb ( Figs 78–80 View FIGURES 78-80 ; cf. Figs 65–67 View FIGURES 65–67 ), the more strongly concave ventro-distal excavation anterior to macroseta v1 ( Fig. 77 View FIGURES 68–77 ; cf. Fig. 64 View FIGURES 55–64 ), and the covering of downy, reflective setae on the carapace ( Figs 68, 70 View FIGURES 68–77 ; cf. Figs 55, 57 View FIGURES 55–64 ).

Females are unknown.

Description (male holotype): Total length 14.3. Carapace 5.7 long, 4.4 wide. Abdomen 5.9 long, 3.3 wide. Carapace ( Fig. 68 View FIGURES 68–77 ) dark chocolate-brown, covered with reflective downy setae ( Fig. 70 View FIGURES 68–77 ); lateral margins with fringe of anteriorly curved, porrect black setae, longest posteriorly; fovea straight. Eye group ( Fig. 71 View FIGURES 68–77 ) rectangular, twice as wide as long, PLE–PLE/ALE–ALE ratio 1.0; AME separated by less than their own diameter; PME separated by 3.4 X their own diameter; PME and PLE almost contiguous. Maxillae each with field of ca. 40–50 cuspules confined to heel and inner proximal corner ( Fig. 72 View FIGURES 68–77 ); labium without cuspules. Abdomen ( Figs 69, 74 View FIGURES 68–77 ) elongate-oval, dark grey-brown with course pale beige-brown marbled pattern dorsally, and pale beige-brown ventrally with finer dark brown mottling, the latter concentrated slightly anterior to spinnerets; covered with short, fine setae. Legs ( Figs 68, 75–77 View FIGURES 68–77 ) dark tan-brown, with light scopulae on tarsi I–II and distal half of metatarsi I–II; tibia I with 3 prodorsal, 3 prolateral, 4 proventral, 4 ventral, and 1 (small) retrolateral macrosetae; macroseta v1 not reaching beyond ventrodistal margin of tibia I ( Fig. 77 View FIGURES 68–77 ). Leg I: femur 4.4, patella 2.7, tibia 3.4, metatarsus 3.9, tarsus 2.6, total length 17.0. Leg I femur–tarsus/carapace length ratio 3.0. Pedipalpal tibia ( Figs 78–80 View FIGURES 78-80 ) 2.6 X longer than wide, with isolated, proximal retroventral macroseta, 1 retrodistal macroseta, 1 dorsal macroseta, 1 prodistal macroseta, 1 proventral macroseta, and 1 prolateral macroseta. Cymbium ( Figs 78–80 View FIGURES 78-80 ) setose, distally cleft in retrolateral view, with distal scopula. Bulb ( Figs 78–80 View FIGURES 78-80 ) heart-shaped, with long, whip-like, reflexed embolus arising from prolateral base of bulb.

Etymology. The specific epithet is a noun in apposition, in reference to the type locality of this species.

Distribution. Namea nebo   is endemic to the D’Aguilar Range, where it is known only from rainforest at Mount Nebo ( Fig. 2 View FIGURES 1–3 ).

Remarks. This extremely rare species has only ever been collected at a single location within the Boombana section of D’Aguilar National Park. Nothing is known of its biology or life history, other than that males appear to be active in winter (July to August).

QMB

Queensland Museum, Brisbane

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Nemesiidae

Genus

Namea

Loc

Namea nebo

Rix, Michael G., Wilson, Jeremy D. & Harvey, Mark S. 2020
2020