Molecular and morphological characterisation of new species in the trapdoor spider genus Aname (Araneae: Mygalomorphae: Nemesiidae) from the Pilbara bioregion of Western Australia
Harvey, Frances S. B.
Framenau, Volker W.
Wojcieszek, Janine M.
Rix, Michael G.
Harvey, Mark S.
Zootaxa
2012
3383
15
38
Arachnida
Nemesiidae
Aname
Animalia
Araneae
Arthropoda
species
marae
Figs 8, 9, 43 -51
Type material. AUSTRALIA: Western Australia: holotypemale, Tom Price powerlines, 4 kmNW. of Tom Price, 22°41 '10"S, 117°44 '56"E, 6 September 2009, dug from burrow, D. Kamien( WAM T98424 DNA). Paratypes. 3 males, same data as holotype except 5 September 2009, dug from burrow, D. Kamien( WAM T98427 DNA, T 112543, T 112544); 3 males, same data except 22°40 '56"S, 117°45 '06"E, 5 September 2009, dug from burrow, D. Kamien( WAM T98428, T98432 DNA, T98435 DNA). Other material examined. AUSTRALIA: Western Australia: 2 males, Tom Price powerlines, 5 kmNW. of Tom Price, 22°40 '36"S, 117°44 '19"E, 4 September 2008, dug from burrow, D. Kamien( WAM T98423 DNA, T98425 DNA); 2 males, Tom Price powerlines, 6.1 kmNW. of Tom Price, 22°40 '08"S, 117°44 '53"E, 4 September 2009, dug from burrow, D. Kamien( WAM T98430 DNA, T 112542); 1 male, Tom Price powerlines, 8 kmNW. of Tom Price, 22°39 '17"S, 117°42 '59"E, 6 September 2009, dug from burrow, D. Kamien( WAM T98436 DNA); 5 males, same data except 22°39 '28"S, 117°43 '01"E, 6 September 2009, dug from burrow, D. Kamien( WAM T98426 DNA, T98429 DNA, T98431 DNA, T98433 DNA, T98434 DNA).
Etymology. This species is named for Mara Blosfelds, the senior author'smother.
Diagnosis. Males of A. maraeresemble A. barrema Raven, 1985, A. distincta Raven, 1985, A. inimica Raven, 1985and A. ellenaein the shape of the bulb which tapers gradually to the embolus (Figs 50, 51), but differ in the shape of the embolus which is broadly flattened at the base (Fig. 51). In addition, A. maraemales lack the retrolateral patch of short setae on the pedipalpal tibia (Figs 50, 51) that are characteristic for A. ellenae(Figs 41, 42) and also have fewer maxillary cuspules (< 100 incomparison to> 100) which do not extend to the maxillary heel (Fig. 47). Females of A. maraeare unknown.
Description. Adult male (based on holotype WAMT 98424): medium-sized nemesiid spider (total length 13.4). Colour: carapace reddish-brown with somewhat darker cephalic region (Fig. 43), eye region dark brown (Fig. 46); sternum light brown, darker towards margins, sigilla light brown and labium brown (Fig. 45); abdomen dorsally dark greyish-brown (Fig. 44), ventrally light brown; chelicerae very dark brown; pedipalp segments uniformly brown (Fig. 50); leg I dark reddish-brown with metatarsi and tarsi brown (Fig. 48), legs II-IV brown. Carapace: 7.2 long, 5.6 wide; eye group (Fig. 46) 1.4 wide, 0.7 long; fovea slightly procurved (Fig. 43). Sternum and labium: 4.4 long, 2.7 wide; 2 pairs of very indistinct elongated sigilla in posterior half (Fig. 45); labium wider than long, slightly indented anteriorly (Fig. 47). Maxillae: with <100 pin-like cuspules, not extending to heel (Fig. 47). Chelicerae: without rastellum, promargin with 11 irregularly sized teeth, retromargin with 3 small teeth proximally. Abdomen: 6.7 long, 3.7 wide (Fig. 44). Four spinnerets, terminal segment of posterior lateral spinnerets digitiform. Pedipalp: length of femur 3.8, patella 2.2, tibia 2.5, tarsus 1.7. Femur with 1 disto-prolateral spine, patella with 2 prolateral spines. Tibia with 2 long ventral spines, and 4 disto-prolateral; with distinct disto-ventral depression without setae (accommodates bulb and embolus) (Fig. 50); tarsus terminally blunt (Fig. 51); bulb elongated, globular, tapering into short embolus (Figs 50, 51), embolus ca. 0.8 long, curved and flattened at base, straight and tapering distally (Figs 50, 51). Legs: femur I with 2 dorsal spines and 2 disto-prolateral spines, patella with 2 prolateral spines, metatarsi and tarsi without spines; tarsi and apical half of metatarsi of leg I and II ventrally with entire dense scopulae, tarsi of legs III and IV with divided very weak scopulae. Tibia I with large spur and megaspine, metatarsi incrassate (Fig. 49). Tarsi, metatarsi and tibiae with numerous dorsal trichobothria of variable length. Paired tarsal claws of legs with two rows of 8-12 teeth each; third tarsal claw reduced and very small. Leg measurements: length of legs IV>I>II>III. Leg I: femur 5.8, patella 3.5, tibia 4.1, metatarsus 4.2, tarsus 2.5, total = 20.1. Dorsal proximal width of patella I = 1.2, tibial index = 0.16, leg I formula = 2.79. Leg II: femur 5.2, patella 2.8, tibia 3.6, metatarsus 3.8, tarsus 2.3, total = 17.7. Dorsal proximal width of patella II = 0.9, tibial index = 0.14; leg II formula = 2.46. Leg III: femur 4.4, patella 2.5, tibia 2.7, metatarsus 3.6, tarsus 2.1, total = 15.3. Dorsal proximal width of patella III = 1.0, tibial index = 0.19; leg III formula = 2.13. Leg IV: femur 5.8, patella 3.0, tibia 4.2, metatarsus 5.0, tarsus 2.5, total = 20.5. Dorsal proximal width of patella IV = 1.1, tibial index = 0.15; leg III formula = 2.85. FIGURES43-51. Aname marae n. sp., holotypemale ( WAMT 98424): 43, carapace, dorsal view; 44, abdomen, dorsal view; 45, cephalothorax, ventral view; 46, eye group; 47, maxillae, labium and anterior region of sternum, ventral view; 48, left leg I, retrolateral view; 49, left tibia and metatarsus I, retrolateral view; 50, left pedipalpal tibia and tarsus, ventral view; 51, same, retrolateral view. Variation: total length 14.6-18.1, carapace 6.1-7.6 long, 4.7-5.8 wide (n = 10). Adult female: unknown.
Distribution. Aname maraehas only been found near the township of Tom Price in the central Pilbara region of Western Australia(Fig. 8).
Remarks. As for A. ellenae(see above), most males of A. maraewere dug from burrows before the beginning of the wet season (in September) and may have waited there for the first seasonal rainfalls before searching for females.
4403522302
2009-09-06
dug from burrow
WAM
D. Kamien
Australia
-22.68611
Tom Price powerlines, 4 km NW. of Tom Price
1
117.748886
20
35
T 98424 DNA
1
1
Western Australia
holotype
923900276
2009-09-05
dug from burrow
WAM
D. Kamien
Australia
-22.68611
Tom Price powerlines, 4 km NW. of Tom Price
1
117.748886
20
35
T98427 DNA, T 112543, T 112544
3
3
Western Australia
paratype
923900281
2009-09-05
dug from burrow
WAM
D. Kamien
Australia
-22.682222
Tom Price powerlines, 4 km NW. of Tom Price
1
117.75166
20
35
T98428, T98432 DNA, T98435 DNA
3
3
Western Australia
Other material
4403522306
2008-09-04
dug from burrow
WAM
D. Kamien
Australia
-22.676666
Tom Price powerlines, 5 km NW. of Tom Price
1
117.73861
20
35
T98423 DNA, T98425 DNA
2
2
Western Australia
Other material
923900282
2009-09-04
dug from burrow
WAM
D. Kamien
Australia
-22.668888
Tom Price powerlines, 6.1 km NW. of Tom Price
1
117.748055
20
35
T98430 DNA, T 112542
2
2
Western Australia
Other material
923900277
2009-09-06
dug from burrow
WAM
D. Kamien
Australia
-22.654722
Tom Price powerlines, 8 km NW. of Tom Price
1
117.716385
20
35
T98436 DNA
1
1
Western Australia
Other material
923900279
2009-09-06
dug from burrow
WAM
D. Kamien
Australia
-22.657778
Tom Price powerlines, 8 km NW. of Tom Price
1
117.71694
20
35
T98426 DNA, T98429 DNA, T98431 DNA, T98433 DNA, T98434 DNA
5
5
Western Australia
Other material