Austrohahnia catleyi, Rubio, Gonzalo D., Lo-Man-Hung, Nancy F. & Iuri, Hernán A., 2014

Rubio, Gonzalo D., Lo-Man-Hung, Nancy F. & Iuri, Hernán A., 2014, A revision of the Neotropical genus Austrohahnia Mello-Leitão (Araneae, Hahniidae), Zootaxa 3894 (1), pp. 106-116 : 111-113

publication ID

https://dx.doi.org/10.11646/zootaxa.3894.1.8

publication LSID

lsid:zoobank.org:pub:9354539F-3114-4E14-B218-A1869ED50E12

DOI

https://doi.org/10.5281/zenodo.6130697

persistent identifier

https://treatment.plazi.org/id/85BB141E-7414-442C-87B8-4BA07245BBA7

taxon LSID

lsid:zoobank.org:act:85BB141E-7414-442C-87B8-4BA07245BBA7

treatment provided by

Plazi

scientific name

Austrohahnia catleyi
status

new species

Austrohahnia catleyi new species

Figs 2 View FIGURES 2 A – I ; 3 G–I; 4 E–H; 5

Type material. Holotype ♀ (MACN-Ar 30196) from Yunka Suma, S 27.38565 °, W 65.982473 °, 1745 m asl, Catamarca, Argentina, 19.II. 2013, G.D. Rubio, H.A. Iuri, A. Ojanguren, A. Porta & R. Adilardi leg. Paratypes: 3 ♂, 3 ♀, 1 immature, with same data as for holotype (MACN-Ar 30192–30195).

Other material examined. ARGENTINA: Salta: 1 ♀, Tala, S 26.109433 °, W 65.286339 °, 2000 m asl, 14.IX. 1898, F. Silvestri leg. (MACN-Ar 3728).

Etymology. The specific name is a patronymic in honour of Kefyn M. Catley (Western Carolina University), who studied Hahniidae in our region and independently reached similar conclusions about Austrohahnia .

Diagnosis. Female of A. catleyi new species differs from other Austrohahnia by the differently arrangement of copulatory duct: middle stretch of copulatory duct only converge (first converge and then diverge in A. melloleitaoi , and parallel in A. praestans ), and secondary receptacle further apart of copulatory opening ( Figs 3 H, I View FIGURES 3 A – I ); males of A. catleyi new species can be easily distinguished by the AME half the size of ALE (those of other Austrohahnia spp. with equally sized anterior eyes). Moreover, this species differ by the presence of dorsal chevrons on the abdomen ( Figs 2 A, C View FIGURES 2 A – I ; 4 E–H).

Description. Female holotype ( Figs 2 A, B, H, I View FIGURES 2 A – I ; 3 G–I; 4 E, F). Total length 3.84. Carapace 1.75 long, 1.26 wide; abdomen 2.34 long, 1.70 wide. Eye sizes and interdistances: AME 0.08, ALE 0.11, PME 0.10, PLE 0.10. AME–AME 0.04, ALE–ALE 0.19, PME–PME 0.07, PLE–PLE 0.32, AME–PME 0.08, ALE–PLE 0.02. Clypeus height 0.17, clypeus height at AME 0.25. Chelicerae with weak stridulatory files laterally; three promarginal and three retromarginal teeth. Sternum slightly wider than long. Leg measurements: I 4.51 (1.27, 1.47, 1.02, 0.75); II 4.38 (1.25, 1.42, 1.01, 0.70); III 4.36 (1.25, 1.34, 1.10, 0.67); IV 5.54 (1.55, 1.72, 1.47, 0.80). Carapace dark brown, slightly lighter near the edges, edges black. Sternum dark brown, somewhat lighter in the middle. Abdomen with pale yellow chevrons dorsally along the abdomen ( Figs 2 A View FIGURES 2 A – I , 4 E, F View FIGURES 4 A – H ); ventrally brown with lighter irregular spots ( Fig. 2 B View FIGURES 2 A – I ). Legs pale yellow with dark brown rings. Epigyne with two somewhat spherical copulatory opening, located in medium atrium ( Figs 2 H View FIGURES 2 A – I ; 3 G); middle stretch of copulatory duct converging toward the middle ( Fig. 3 H View FIGURES 3 A – I ). The secondary receptacle not close to copulatory opening ( Fig. 3 I View FIGURES 3 A – I ). Variation (n = 5): total length 3.14 –4.00, mean 3.62; one female from Salta has slightly shorter middle stretch of copulatory duct.

Male paratype (MACN-Ar 30194) ( Figs 2 C–G View FIGURES 2 A – I ; 4 G, H). Total length 2.75. Carapace 1.40 long, 1.10 wide; abdomen 1.45 long, 1.04 wide. Eye sizes and interdistances: AME 0.05, ALE 0.10, PME 0.09, PLE 0.08. AME–AME 0.04, ALE–ALE 0.16, PME–PME 0.07, PLE–PLE 0.27, AME–PME 0.07, ALE–PLE 0.02. Clypeus height 0.14, clypeus height at AME 0.22. Chelicerae, sternum and abdomen as in female. Leg measurements: I 4.27 (1.15, 1.35, 1.00, 0.77); II 4.17 (1.15, 1.30, 1.00, 0.72); III 4.04 (1.05, 1.25, 1.05, 0.69); IV 4.98 (1.25, 1.56, 1.35, 0.82). Femora uniformly dark brown (in nature looking metallic; figure 4 G, H). Other characters as in female. Palp ( Figs 2 E–G View FIGURES 2 A – I ): patellar apophysis without granulated edge; copulatory bulb and embolus with the configuration of the genus ( Figs 2 F, G View FIGURES 2 A – I ). Variation (n = 3): total length 2.40–2.76, mean 2.64.

Natural history ( Figs 4 E–H View FIGURES 4 A – H ). Austrohahnia catleyi new species inhabits litter of alder forests ( Alnus acuminata Kunth ) in Northwestern Argentina to over 1700 m altitude, where it builds small horizontal sheet-webs with a retreat. These spiders are very fast and hide rapidly at the slightest disturbance, so they are hard to find among the dry leaves on the ground. Some males were observed wandering on the female webs, approaching slowly towards the retreat.

Distribution ( Fig. 5 View FIGURE 5 ). Northwestern Argentina: Salta, Catamarca.

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Hahniidae

Genus

Austrohahnia