Artoria aculeata, Do Prado & Baptista & Framenau, 2024
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publication ID |
https://doi.org/ 10.11646/zootaxa.5547.1.1 |
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publication LSID |
lsid:zoobank.org:pub:2089C3EC-8FBB-43E6-A6C5-9E6B6AD512D6 |
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persistent identifier |
https://treatment.plazi.org/id/5B248979-0D38-B774-8ED3-F967FBB6FE60 |
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treatment provided by |
Plazi |
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scientific name |
Artoria aculeata |
| status |
sp. nov. |
Artoria aculeata sp. nov.
Figs 2–4 View FIGURE 2 View FIGURE 3 View FIGURE 4
urn:lsid:zoobank.org:act:34F83A5E-810F-4255-9B41-2F0F1101EFA5
Type material. Holotype male, West Cape Riche , ca. 12 km S of Wellstead, Western Australia, AUSTRALIA, 34º39’28’’S, 118º41’29’’E, 4 November 2008, M. L. Moir, I. Kelly, beating vegetation, site 4 ( WAM T77366 About WAM ). GoogleMaps
Other material examined (8 males and 5 females in 8 records). AUSTRALIA: South Australia : 1 female, Baird Bay , 33º9’S, 134º22’E ( WAM T55258 About WAM ) GoogleMaps ; 1 female, same data ( WAM T62311 About WAM ) GoogleMaps ; 3 males, Kangaroo Island , 2.5 km SSE American River, 35º47’58’’S, 137º47’03’’E ( SAM NN13513–5 View Materials ) GoogleMaps ; 1 male, Kangaroo Island, Nepean Bay 35º42’S, 137º37’E ( SAM NN13190 View Materials ) GoogleMaps ; 2 males, St Francis Island, Eyre Peninsula , 32º31’S, 133º18’E ( SAM NN13435–6 View Materials ) GoogleMaps . Western Australia: 1 female, Conspicuous Cliff , 35º03’S, 116º50’E ( WAM T55257 About WAM ) GoogleMaps ; 1 male, 10 km E of Hopetoun , 33º56’S, 120º15’E ( WAM T53729 About WAM ) GoogleMaps ; 1 female, Two Peoples Bay , 34°56’18.19”S, 118°10’48.46”S ( WAM T162525 About WAM ) ; 1 female, same data ( HBI N32472-2 ) .
Etymology. The specific epithet “ aculeata ” is a Latin adjective meaning ‘spiny’ and refers to the acute angles of this species’ tegular apophysis in the male pedipalp and the spiniform projection at the retrolateral part of its dorsal lobe.
Diagnosis. Males and females of A. aculeata sp. nov. resemble those of A. impedita ( Simon, 1909) . The male pedipalp of both species bears a very broad tegular apophysis with a projecting ventral lobe and a dorsal lobe shaped as a keel, curved retrolaterally and with a retrolateral spiniform projection, in addition to a reduced embolic division ( Figs 2C–E View FIGURE 2 , 15C–E View FIGURE 15 ). However, the tegular apophysis of A. aculeata sp. nov. has a triangular ventral lobe in ventral view, with poorly sclerotized retrolateral margin and assuming a triangular acute shape with continuous margins in retrolateral view ( Fig. 2C, D View FIGURE 2 ), while in A. impedita it appears as a stalk in ventral view, and as a more pronounced projection with two acute tips in retrolateral view ( Fig. 15C, D View FIGURE 15 ). In addition, the dorsal lobe of the tegular apophysis of A. aculeata sp. nov. has a smooth distal margin ( Fig. 2C, D View FIGURE 2 ), not serrated as in A. impedita ( Fig. 15C, D View FIGURE 15 ). Considering the female genitalia, both species have a scape-like process originating from the median septum ( Figs 3C View FIGURE 3 , 15C View FIGURE 15 ); however, this process is much shorter in A. aculeata sp. nov. and little projecting, the margins of the atrium are better delimited and contrasting with the membranous areas of the median septum ( Fig. 3C View FIGURE 3 ), whilst the scape-like process in A. impedita is longer (folding over itself) and its surroundings merge with the poorly delimited margins of the atrium ( Fig. 16C, D View FIGURE 16 ).
Description. Male (holotype, WAM T77366).
Total length, 4.17. Carapace, length 2.26, width 1.64, reddish-brown, with paler broad median longitudinal band and narrow lateral marginal bands, and dark brown broad lateral bands ( Fig. 2A View FIGURE 2 ). Sternum, yellowish brown ( Fig. 2B View FIGURE 2 ). Eyes, diameter of AME: 0.09; ALE: 0.09; PME: 0.25; PLE: 0.20, anterior eye row slightly procurved, distance between AME–AME almost twice AME–ALE. Chelicerae, pale brown, darker on their margins, with streaked dark grey patch on their distal half, two retromarginal teeth, subequal, and three promarginal teeth, median largest. Labium, dark brown, with pale anterior rim ( Fig. 2B View FIGURE 2 ). Legs, background colour yellowish-brown, with spaced ringed dark brown stains throughout ( Fig. 2A, B View FIGURE 2 ). Opisthosoma, length 1.87, width 1.32. Dorsum mostly dark grey, with a pale-brown cardiac mark almost half as long as opisthosoma, a large V-shaped patch of irregular reddish-brown spots from the sides of the cardiac mark converging to the posterior margin of the opisthosoma ( Fig. 2A View FIGURE 2 ), two lateral rows of three paired, pale-yellow spots; one pair close to the posterior margin, another close to the posterior tip of cardiac mark, and the third close to the posterior margin. Venter dark yellow scattered with dark grey spots ( Fig. 2B View FIGURE 2 ).
Pedipalp ( Fig. 2C–E View FIGURE 2 ), tibia rectangular in ventral view, cymbium free tip about one third as long as the whole cymbium in ventral view; subtegulum heavily sclerotized, medium-sized. Tegular apophysis large, very broad, with a ventral triangular and concave lobe, ending in a very acute tip pointed transversally to the frontal plane of the tegulum and with its dorsal margin connected to a dorsal lobe, which bears a rounded, keeled retrolateral expansion with a large proximal spine. Basoembolic apophysis wider than long, triangular, small, and heavily sclerotized. Embolus semi-circular, flat and large, tapering from its middle to its truncated apex. Terminal apophysis very thin and mostly covered by the flat embolus in ventral view.
Female (WAM T162525).
Total length, 5.58. Carapace, length 2.76, width 2.02, with a large reddish-brown longitudinal median band, narrowing posteriorly, two brown lateral bands and two pale brown marginal bands ( Fig. 3A View FIGURE 3 ). Eyes, diameter of AME 0.09, ALE 0.08, PME 0.26, PLE 0.22, anterior eye row procurved, evenly spaced. Chelicerae, reddish-brown, darker on their margins, with streaked dark grey patch on its distal half, three retromarginal teeth, subequal, and three promarginal teeth, median largest. Labium, Posterior half dark brown, anterior half pale ( Fig. 3B View FIGURE 3 ). Legs, background colour yellow, reddish-brown on the patellae, and distal and proximal margins; femur, tibia and metatarsus, ringed dark grey stains throughout ( Fig. 3A, B View FIGURE 3 ). Opisthosoma, length 3.09, width 2.22. Dorsum mostly dark grey, with a reddish-brown cardiac mark reaching half as long as opisthosoma, two reddish-brown irregular patches, one on each side of the cardiac mark, two longitudinal rows of spaced pale orange dots throughout their length, a pale irregular patch on the anterior margin of the dorsum and two spaced pairs of pale patches in the last third ( Fig. 3A View FIGURE 3 ). Venter mostly dark grey, suffused with pale spots laterally and with two median longitudinal rows of pale spots ( Fig. 3B View FIGURE 3 ).
Epigyne, wider than long, atrium round. Median septum sub-triangular with a rounded scape-like process in its anterior ⅔ surrounded by a membranous and rugged area which gradually merges with the margins of the atrium and inner margins of the lateral lobes. Lateral lobes semi-circular, robust, with their posterior parts projected mesally transverse to epigastric furrow, with acute tips far apart from each other ( Fig. 3C View FIGURE 3 ). Spermathecal heads globular, around one diameter apart; spermathecal stalks long, twice as long as spermathecal diameter, attached mesally, bent ectally, then ventrally to the copulatory openings laterally at the posterior third of epigyne ( Fig. 3D View FIGURE 3 ).
Variation. Body length: Males (n=5): 3.88–4.17; Females (n=5): 5.07–6.46.
Remarks. In the illustrated male pedipalp ( Fig. 2C, D View FIGURE 2 ), the tegular apophysis was moved ventrally for a clearer view of its dorsal lobe. In natural position, the dorsal lobe hides behind the tegulum in ventral view. Males and females of A. aculeata sp. nov. have so far not been found together. We matched these based on the similarity of both sexes with A. impedita , the overlapping range of both sexes and the apparent similar habitat preference for coastal woodlands.
Life history and habitat preferences. Mature males of A. aculeata sp. nov. have so far been found in October and November, females in June, July and October suggesting a winter to late spring reproductive period. Artoria aculeata sp. nov. seems to prefer coastal woodland habitats.
Distribution. Coastal records in south-western Western and South Australia ( Fig. 4 View FIGURE 4 ).
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.