Namea gloriosa, 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 : 78

Namea gloriosa sp. nov.

( Figs 14a, b , 22–34 )

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Namea cucurbita Raven, 1984: 22 (in part; cited paratype specimen QMB S799 from Mt Tenison Woods).

Type material. AUSTRALIA: Queensland: male holotype, Mount Glorious , malaise trap, rainforest, 10 Au-gust–13 November 1983, A. Hiller ( QMB S10269 ) . Paratype: 1 male, Tenison Woods Mountain [sic “Mt Tenison Woods”], pitfall trap, 26 June–18 November 1978, G. & S. Monteith ( QMB S799 ) .

Diagnosis. Males of Namea gloriosa can be distinguished from those of all other described congeners except N. cucurbita by the size of the isolated, proximal retroventral macroseta on the palpal tibia, which is unusually long (i.e. clearly longer than the length of the palpal bulb) ( Fig. 32 ). Males can be further distinguished from those of N. cucurbita by the shorter embolus ( Fig. 34 ; cf. Rix et al. 2020, fig. 41) and the more slender profile of tibia I ( Fig. 31 ; cf. Rix et al. 2020, fig. 38).

Females are unknown.

Description (male holotype): Total length 19.9. Carapace 7.7 long, 6.1 wide. Abdomen 8.5 long, 4.4 wide. Carapace ( Fig. 22 ) dark chocolate-brown, covered with reflective downy setae ( Fig. 24 ); lateral margins with fringe of anteriorly curved, porrect black setae, longest posteriorly; fovea straight. Eye group ( Fig. 25 ) rectangular, twice as wide as long, PLE–PLE/ALE–ALE ratio 1.0; AME separated by less than their own diameter; PME separated by 4.1 X their own diameter; PME and PLE almost contiguous. Maxillae each with field of ca. 70 cuspules confined to heel and inner proximal corner ( Fig. 26 ); labium without cuspules. Abdomen ( Figs 23, 28 ) elongate-oval, dark brown with course pale beige-brown marbled pattern dorsally, and pale beige-brown ventrally with finer dark brown mottling; covered with short, fine setae. Legs ( Figs 22, 29–31 ) dark brown, with light scopulae on tarsi I–IV and distal half of metatarsi I–II; tibia I with 3 prodorsal, 2 proventral, 3 ventral and 1 retrolateral macrosetae; macroseta v1 large, reaching beyond ventro-distal margin of tibia I ( Fig. 31 ). Leg I: femur ca. 5.7 [damaged], patella 4.0, tibia 4.6, metatarsus 4.7, tarsus 3.1, total length ca. 22.1. Leg I femur–tar-sus/carapace length ratio ca. 2.9. Pedipalpal tibia ( Figs 32–34 ) 2.5 X longer than wide, with isolated, proximal retroventral macroseta (which is longer than length of palpal bulb), 1 retrodistal macroseta, 1 prodistal macroseta, and 2 proventral macrosetae. Cymbium ( Figs 32–34 ) setose, with distal scopula. Bulb ( Figs 32–34 ) sub-spherical, with long, whip-like, reflexed embolus arising from retroventral base of bulb.

Etymology. The specific epithet is derived from the Latin gloriosus (adjective: ‘glorious’, ‘full of glory’), in reference to the type locality of this species.

Distribution. Namea gloriosa is endemic to the D’Aguilar Range, where it is known only from rainforest at Mount Glorious and Tenison Woods Mountain ( Fig. 2 ).

Remarks. This species is extremely rare, and currently known from only two male specimens. Nothing is known of its biology or life history, other than that the two known male specimens were collected wandering in search of females in winter or spring.

Figures

FIGURES 14–21. Comparative morphology of Namea from the D’Aguilar Range (south-eastern Queensland); each figure for each species depicts (a) the male tibia I in standardised prolateral view, (b) the male pedipalp in retrolateral view, +/- (c) the female cleared genitalia in dorsal view (if known): 14, N. gloriosa sp. nov. (QMB S10269); 15, N. nigritarsus sp. nov. (QMB S111534); 16, N. nebo sp. nov. (QMB S65274); 17, N. excavans Raven, 1984 (QMB S813); 18, N. brisbanensis Raven, 1984 (QMB S767 [male], S111397 [female]); 19, N.gowardae sp. nov.(QMB S774 [male], S111377 [female]); 20, N. salanitri Raven, 1984 (QMB S1166 [male], S111396 [female; with epigastric lobes highlighted*); 21, N. dahmsi Raven, 1984 (QMB S88018 [male tibia I], S800 [male pedipalp], S111481 [female; note bent right spermathecal fundus]). Tibial macrosetae are coloured and labelled according to their relative position (dark blue, prodorsal [pd]; red, prolateral [p] or proventral [pv]; dark grey, ventral [v]; light blue, retroventral [rv]).

FIGURES 22–31. Namea gloriosa sp. nov., male holotype (QMB S10269) from Mount Glorious (south-eastern Queensland), somatic morphology: 22–23, carapace and abdomen, dorsal view; 24, cephalothorax, lateral view; 25, eyes, dorsal view; 26, mouthparts, ventral view; 27–28, cephalothorax and abdomen, ventral view; 29, leg I, prolateral view; 30, leg I tibia, retrolateral view; 31, leg I tibia, profile in standardised prolateral view, showing relative position of macrosetae (pd, prodorsal; pv, proventral; v, ventral); note the broken seta (*) at position v2. Scale bars = 3.0 mm.

FIGURES 32–34. Namea gloriosa sp. nov., male holotype (QMB S10269) from Mount Glorious (south-eastern Queensland), pedipalp: 32, retrolateral view; 33, retroventral view; 34, prolateral view. Scale bar = 3.0 mm.

FIGURES 1–3. The D’Aguilar Range of south-eastern Queensland: 1, elevational heat map showing upland areas surrounding Brisbane, and the relative position of the D’Aguilar Range; 2, topographic map of the D’Aguilar Range (in shaded relief), with major localities highlighted; 3, typical habitat for Namea on rainforest bank at Mount Glorious (Maiala section). Image 3 copyright Queensland Museum (used with permission).