Mago acutidens Simon 1900
Creators: name: Patello, Thyago J. C.
name: Ruiz, Gustavo R. S.
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Salticidae
Mago
Mago acutidens

description: Mago acutidens Simon, 1900
Figs 9, 12, 15, 23–26, 44
Mago acutidens Simon, 1900: 56 (Male lectotype and paralectotypes designated by Galiano from Cametá [2.25°S 49.60°W], Pará (or Tefé, Amazonas; both localities in original lable), Brazil, E. Simon, deposited in the MNHN 7577, examined); Caporiacco, 1948: 697, fig. 119; Galiano, 1963: 387, pl. XXVI, figs 6–9; Platnick, 2014.
Diagnosis. Within the group, this species seems to be closely related to M. jurutiensis sp. nov. by having median projections on both the prolateral and retrolateral sides of the embolus, but can be identified by the less developed apophyses (Fig. 23). Females of both these species have large, oblique copulation openings about twice the width of the copulation ducts (Figs 25–26, 28–29), but it is difficult to tell them apart. So far, the two species have not been found living at the same locality.
Description. Male. See Galiano (1963: 387, pl. XXVI, fig. 6–9).
Female. See Caporiacco (1948: 697, fig. 119).
Note. The median prolateral projection on the embolus of the lectotype of M. acutidens (Fig. 23) seems to have been ignored in the redescription (see Galiano, 1963, pl. XXVI, fig. 9). Caporiacco (1948: 697) mentions he had only three females from Guyana. At the time, the male-female match was established only by comparison of these females with Simon’s original description of the male. We were not able to examine the specimens used by Caporiacco in his description, but the illustration of the epigyne given (Caporiacco, 1948, fig. 119) does not match exactly with the external reproductive structure of the female of this species (Fig. 25). However, Caporiacco is known for having given poor descriptions and especially bad drawings that had little similarity to the structures he was illustrating (see Ruiz & Brescovit, 2005; Ruiz et al., 2007; Ruiz & Brescovit, 2008). Beacause of the homogeneity in body shape and coloration within the acutidens group of Mago, we will not present descriptive information for the female other than the illustrations of the epigyne.
Additional material examined. BRASIL, Roraima: Uraricoera (Ilha de Maracá) [3.42°N 61.66°W], 13m 11f, 12.III–10.XII.1987, A.A. Lise (INPA 2873–2880, 2882–2885); 7m, 17f, 8j, 31.I–19.II.1992, A.A. Lise (MCTP 1938); Acre: Senador Guiomard (Reserva Extrativista de Catuaba) [10.07°S 67.63°W], 1m, 2003, E.F. Morato (IBSP 161457); Amazonas: São Paulo de Olivença (Paranã Sakaia, Palmares, 3.45°S 68.783333°W), 1m, 11.IX.2003, F.N.A.A. Rego et al. (IBSP 98215); Santo Antônio do Içá (Lago Chicotuba/Paranã Canini, Presidente Vargas, 3.172778°S 68.030833°W), 1m, 15.IX.2003, F.N.A.A. Rego et al. (IBSP 98202); Jutaí (Lago Comprido, São Raimundo, 2.416944°S 66.896944°W), 2m, 17.IX.2003, F.N.A.A. Rego et al. (IBSP 98206, 98199); Tefé (Guariba-Solimões, São Jõao do Catuá, 3.663889°S 64.17°W), 2m 1f, 22–23.IX.2003, F.N.A.A. Rego et al. (IBSP 98208, 98234); (Paranã do Guariba, São João do Catuá, 3.635°S 64.185833°W), 2m 1f, 23.IX.2003, F.N.A.A. Rego et al. (IBSP 98203, 98237); Coari (Ilha da Botija, Trocaris, 3.913889°S 62.833333°W), 2m 2f, 25.IX.2003, F.N.A.A. Rego et al. (IBSP 98200, 98205, 98232, 98233); Codajás (Lago Cuxúara, Urucurizinho, 3.971944°S 61.96°W), 1f, 26.IX.2003, F.N.A.A. Rego et al. (IBSP 98239); (Lago do Poção, Urucurizinho, 3.983889°S 61.958889°W), 2m 1f, 27.IX.2003, F.N.A.A. Rego et al. (IBSP 98216, 98217, 98236); Presidente Figueiredo (Hidrelétrica de Balbina, Reserva Biólogica do Uatumã, Ilha da Copa, 1.825389°S 59.430194°W), 1f, 14.VII.2006, R. Saturnino (INPA 868); (Ilha da Serrinha, 1.874°S 59.417694°W), 5m 4f 1j, 15–16.VII.2006, A.B. Bonaldo, A.L. Tourinho & R. Saturnino (INPA 867, 871, 875, 876); (Ilha do U, 1.811111°S 59.658806°W), 1f, 29.VII.2006, R. Saturnino (INPA 0869); (Ilha Santa Luzia, 1.734194°S 59.4415°W), 21.VII.2006, R. Saturnino (INPA 866); (Ilha Massaranduba, 1.784611°S 59.685806°W), 1m, 09.VIII.2006, R. Saturnino (INPA 870); (Ilha Palhal 2, 1.790111°S 59.448806°W), 1m, 19.VII.2006, R. Saturnino (INPA 874); Manaus (Fazenda Esteio, 60 km N Manaus, ZR-3, km 23) [2.39°S 60.03°W], 6m 1f, 16.V.1985 – 26.III.1986, B.C. Klein (INPA 2886, 3096, 3098, 3099, 3100, 3101, 3102); (Reserva da Campina), 2m, 19.X.1973, L.P. Albuquerque (INPA 3117, 4804); 1f, 25.IV.1973, Albuquerque, L.P. (INPA 8795); 2m, 11.VI.1973, L.P. Albuquerque (INPA 3091); (Reserva Ducke) [2.95°S 59.93°W], 1m, 16.III.1974, L.P. Albuquerque (INPA 3093); 1f, 28.V.1973, L.P. Albuquerque (INPA 8796); 1f, 26.VII.1973, Albuquerque, L.P. (INPA 8797); 1f, 13.VIII.1973, L.P. Albuquerque (INPA 3103); 1f, 12.III.1987, L. Aquino (INPA 3111); 1m, 14.X.1991, H. Höfer & T. Gasnier (INPA 4812); Itacoatiara (Matinha, Nossa Senhora do Perpétuo Socorro, 3.153889°S 59.323889°W), 2f, 07.XI.2003, F.N.A.A. Rego et al. (IBSP 98230, 98231); Pará: Santarém (Alter do Chão, São Luiz) [2.515°S 54.953°W], 1f, 02.VII.2007, E. Borari (MPEG 15882); (Alter do Chão, Anísio), 4m 2f, 26.VI.2007, M.L.N. Sirotheau & E. Borari (MPEG 15889, 16025); (Alter do Chão, Mocotó), 2f, 27–30.VI.2007, M.L.N. Sirotheau & B.J.F. Silva (MPEG 15885–15886); (Alter do Chão, São Raimundo), 1m 1f, 11.VII.2007, B.J.F. Silva (MPEG 15881, 16055); (Alter do Chão, Seringa), 3m 2f, 13.VII.2007, M.L.N. Sirotheau & B.J.F. Silva (MPEG 15883, 15887, 15891); Aveiro (Rio Mamuru, Cataueré, 3.413472°S 56.406528°W), 1m, 23.IX.2009, N.F. Lo-Man-Hung (MPEG 15803); Almeirim (Genipapo, Arumanduba, 1.495°S 52.453889°W), 1m, 20.X.2003, F.N.A.A. Rego et al. (IBSP 98201); (Munguba, Arumanduba, 1.48°S 52.441944°W), 1m, 20.X.2003, F.N.A.A. Rego et al. (IBSP 98204); Gurupá (Furinho, São José, 1.203889°S 51.817778°W), 1m, 18.X.2003, F.N.A.A. Rego et al. (IBSP 98207); (São José, 1.196944°S 51.782778°W), 1f, 18.X.2003, F.N.A.A. Rego et al. (IBSP 98235); Melgaço (Floresta Nacional de Caxiuanã) [1.792306°S 51.434028°W], 1m 1f, 11.VIII.1996, A.A. Lise (MCTP 9460); São Félix do Xingu (Parque Nacional da Serra do Pardo, 5.774757°S 52.62813°W), 1m, 27.IV.2012, G.R.S. Ruiz et al. (MPEG 21095); Altamira (Castelo dos Sonhos, 8.214167°S 55.020278°W), 1m 1f, 14.XI.2005, A. Tavares (MPEG 2747, 2756); (8.253333°S 55.015833°W), 1m, 13.XI.2005, J.O. Dias (MPEG 2755); (8.334444°S 55.314611°W), 1m, 10.XI.2005, D.R. Santos-Souza (MPEG 2754); Novo Progresso [7.13°S 55.43°W], 1m, 25.XI.2005, D.F. Candiani (MPEG 2757); (Campo de Provas Brigadeiro Velloso, Serra do Cachimbo, 9.367472°S 55.019972°W), 1m, 03.IV.2004, J.A.P. Barreiros (MPEG 5704).
Distribution. Known from the states of Roraima, Acre, Amazonas and Pará (Brazil) (Fig. 44). Possibly also found in Guyana (Caporiacco, 1948).
description: Published as part of Patello, Thyago J. C. & Ruiz, Gustavo R. S., 2014, Revision of the acutidens group of Mago (Araneae: Salticidae: Amycinae), pp. 443-457 in Zootaxa 3786 (4) on pages 445-446, DOI: 10.11646/zootaxa.3786.4.3, http://zenodo.org/record/250259