Audifia semigranosa Simon, 1895

Rodrigues, Everton Nei Lopes, 2024, On the little-known comb-footed spider genus Audifia Keyserling, 1884 (Araneae, Theridiidae), Zootaxa 5453 (4), pp. 595-600 : 596-598

publication ID

https://doi.org/ 10.11646/zootaxa.5453.4.10

publication LSID

lsid:zoobank.org:pub:B623B12D-31AC-4329-AF30-A57B8D00C010

DOI

https://doi.org/10.5281/zenodo.11240591

persistent identifier

https://treatment.plazi.org/id/1D1187FF-A04E-914B-2AAF-AC82FECCF901

treatment provided by

Plazi

scientific name

Audifia semigranosa Simon, 1895
status

 

Audifia semigranosa Simon, 1895 View in CoL

Figs. 1–9 View FIGURES 1–6 View FIGURES 7, 8 View FIGURE 9

Audifia semigranosa Simon, 1894: 526 View in CoL , figs 533–535 (nomen nudum).

Audifia semigranosa Simon, 1895: 132 View in CoL (Female holotype from Tefé , Amazonas, Brazil, deposited in the Muséum National d’Historie Naturelle, Paris, not examined).

Audifia semigranosa Levi, 1963: 125 View in CoL , figs 5–6.

Diagnosis. The genus Audifia is close to Dipoena and Euryopis , but males differ by the median apophysis very developed, originating retrolaterally on the tegulum and extends dorsally through the palp ( Figs 1–4 View FIGURES 1–6 ), while is positioned prolaterally in Dipoena (see Agnarsson et al., 2007, figs 4–7: D. melanogaster type species) and the median apophysis attached to tegulum in Euryopis (see Agnarsson et al., 2007, figs 8–11: E. flavomaculata type species); also differ by the presence of a sclerotized apophysis on the median apophysis ( Figs 1–3 View FIGURES 1–6 ), absent in Dipoena and Euryopis and by the presence of pedicel very long ( Figs 5, 6 View FIGURES 1–6 ), while is short in Dipoena and Euryopis . Females of Audifia semigranosa resemble to Audifia laevithorax (see Levi 1963, figs 1, 2) by the presence of two pairs of spermathecae, but differ by the shape of spermathecae, elongated ( Figs 7, 8 View FIGURES 7, 8 ), while circular in A. laevithorax ; the copulatory opening is large and anterior ( Figs 7, 8 View FIGURES 7, 8 ), while is small and posterior, near of epigastric furrow in A. laevithorax ; second pair of spermathecae distant to each other ( Fig. 8 View FIGURES 7, 8 ), while closer to each other in A. laevithorax (see Levi, 1963, fig. 1).

Description. Male from Resende, RJ, Brazil (IBSP 28734). Total length 2.96. Carapace ( Fig. 5 View FIGURES 1–6 ) length 1.56, width 0.98, height 0.46. Clypeus height 0.52. Sternum length 0.57, width 0.46. Abdomen length 1.3, width 0.93, height 0.88. Leg formula I/IV/II/III; segment length (I/II/III/IV): femora 1.09/0.88/0.72/0.98; patellae+tibiae 1.19/0.83/0.72/1.14; metatarsi+tarsi 1.19/0.93/0.88/1.14; total 3.47/2.64/2.32/3.26. Circular carapace yellow brown, pronounced eye region, but not high in median and posterior area ( Fig. 6 View FIGURES 1–6 ). Dorsal grooves on carapace well pronounced. Chelicerae small, lighter than carapace. Eyes with black margins, AME larger than the others. Eye diameter and interdistances: AME 0.10, PME 0.06, ALE 0.07, PLE 0.06, AME–AME 0.10, AME–ALE 0.04, PME– PME 0.08, PME–PLE 0.10. Sternum darker than the carapace, with blackened edges. Legs long and thin. Coxae pale yellow, other articles yellow with dark longitudinal stripe. Pedicel long and sclerotized, ant-like. Pedicel with longitudinal blackish bands, in lateral view with small bulge ( Figs 5, 6 View FIGURES 1–6 ). Abdomen dorsally oval ( Fig. 5 View FIGURES 1–6 ), darker. Colulus with a pair of setae. Spinnerets pale yellow. Cymbium oval in dorsal view, embolus sclerotized and hooked, conductor in the expanded palp is possible to be visualized, membranous, Theridiidae tegular apophysis distally is hooked and embedded in the tegulum, median apophysis is very developed ( Fig. 1 View FIGURES 1–6 ), hooked, and sclerotized with an apophysis ( Figs 2, 3 View FIGURES 1–6 ). Subtegulum membranous and tegulum globular ( Fig. 4 View FIGURES 1–6 ). Tegulum and subtegulum can be seen on the expanded palp ( Fig. 4 View FIGURES 1–6 ).

Female from Resende, RJ, Brazil (IBSP 28734). Total length 3.06. Carapace length 1.56, width 0.83, height 0.46. Clypeus height 0.26. Sternum length 0.78, width 0.46. Abdomen length 1.5, width 1.19, height 0.78. Leg formula I/IV/II/III; segment length (I/II/III/IV): femora 1.04/0.83/0.62/0.98; patellae+tibiae 1.09/0.83/0.72/1.04; metatarsi+tarsi 1.14/0.88/0.83/1.14; total 3.27/2.54/2.17/3.16. Elongated carapace, dark red-brown, darker than male. Chelicerae small, lighter than carapace. Ocular region not pronounced. Eyes with black margins, AME larger than the others. Eye diameter and interdistances: AME 0.10, PME 0.06, ALE 0.07, PLE 0.06, AME–AME 0.10, AME–ALE 0.04, PME–PME 0.08, PME–PLE 0.12. Sternum with blackened edges. Legs long and thin. Coxae pale yellow, other articles yellow with dark-brown longitudinal stripe. Pedicel long and sclerotized, dark red brown with longitudinal blackish bands. Abdomen dorsally oval, dark brown. Colulus with a pair of setae. Spinnerets dark olive-green. Epigynum with a slightly sclerotized plate, longer than wider ( Fig. 7 View FIGURES 7, 8 ); with a wide copulatory opening anteriorly on the plate ( Figs 7, 8 View FIGURES 7, 8 ). Internal genitalia with two pairs of oval spermathecae ( Fig. 8 View FIGURES 7, 8 ), copulatory ducts long and the short and uncoiled fertilization ducts at the base of the first pair of spermathecae ( Fig. 8 View FIGURES 7, 8 ).

Remarks. Males and females were collected at the same locality.

Material examined. Brazil. Rio de Janeiro: Resende, Parque Nacional do Itatiaia (22°23’S; 44°43’W), H. F. Japyassú GoogleMaps , 08.VI.2001, 1 female ( MCN 34013 ) ; 1 female ( IBSP 28721 View Materials ) ; 1 male, 1 female ( IBSP 28734 View Materials ) .

Distribution. Brazil (Amazonas and Rio de Janeiro). Previously known from state of Amazonas (type-locality). Herein newly recorded from states of Rio de Janeiro, Brazil ( Fig. 9 View FIGURE 9 ).

Natural history. There is no information about the biology of the species. They appear to be quite rare spiders, since in the Biota-Fapesp project material few individuals were collected, and they are almost absent in Brazilian spider collections.

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Theridiidae

Genus

Audifia

Loc

Audifia semigranosa Simon, 1895

Rodrigues, Everton Nei Lopes 2024
2024
Loc

Audifia semigranosa

Levi, H. W. 1963: 125
1963
Loc

Audifia semigranosa

Simon, E. 1895: 132
1895
Loc

Audifia semigranosa

Simon, E. 1894: 526
1894
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