A new species of the Xestoblatta surinamensis group from Amazonia, northern Brazil, with redescriptions of X. amaparica , X. surinamensis and X. vera (Blattodea: Ectobiidae)

Xestoblatta Hebard, 1916 is revisited, with description of X. urucuana sp. nov. from northern Brazil. Additionally the hitherto known species X. amaparica Rocha e Silva Albuquerque & Gurney, 1962, X. surinamensis Bruijning, 1959 and X. vera Rocha e Silva Albuquerque & Fraga, 1975, are redescribed. Information on the genitalia of the males is also provided. All the species are included in the Xestoblatta surinamensis species group and the placement of X. jygautieri Grandcolas, 1992 in this group discussed. To facilitate species identification, we provide a key to the species of the X. surinamensis group, charac terized by the subgenital plate with left style (ventral view) about two to five times larger than right style; right paraproct (dorsal view) with three lobes, one with a spiny projection, and median sclerite slender and lanceolate.

KEY WORDS:
Blattelinae; Dictyoptera; taxonomy

Authorship

Luiz Rafael Silva-da-Silva

Departamento de Entomologia, Museu Nacional, Universidade Federal do Rio de Janeiro. Quinta da Boa Vista, São Cristóvão, 20940-040 Rio de Janeiro, RJ, Brazil. E-mail: profcien@gmail.com, sonialfraga@gmail.comUniversidade Federal do Rio de JaneiroBrazilRio de Janeiro, RJ, BrazilDepartamento de Entomologia, Museu Nacional, Universidade Federal do Rio de Janeiro. Quinta da Boa Vista, São Cristóvão, 20940-040 Rio de Janeiro, RJ, Brazil. E-mail: profcien@gmail.com, sonialfraga@gmail.com

Sonia Maria Lopes

Author contributions:

LRSS and SML participated equally in the preparation of this article.

Competing interests:

The authors have declared that no competing interests exist.

SCIMAGO INSTITUTIONS RANKINGS

Figures

Figures (4)

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Figures 1-12
Xestoblatta urucuana sp. nov., holotype male: (1) habitus, dorsal view, length 18.4 mm; (2) head, ventral view; (3) pronotum, dorsal view; (4) tergal modification of the tergite VII, dorsal view; (5) subgenital plate, ventral view; (6) left style, ventral view; (7) supra anal plate, dorsal view; (8) left paraproct, dorsal view; (9) right paraproct, dorsal view; (10) left phallomere (L3), dorsal view; (11) median esclerite (L2vm), dorsal view; (12) right phallomere (R2), dorsal view. Scale bars: 2 = 2.5 mm, 3-4 = 3.0 mm, 5, 11-12 = 1.5 mm, 6 = 0.15 mm, 7 = 1.8 mm, 8-9 = 0.8 mm, 10 = 0.7 mm.

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Figures 13-23
Xestoblatta amaparica , paratype male: (13) Habitus, dorsal view, length 23 mm; (14) head, ventral view; (15) Pronotum, dorsal view; (16) Tergal modification of the tergite VII, dorsal view; (17) Subgenital plate, ventral view; (18) Supra anal plate, dorsal view; (19) Left paraproct, dorsal view; (20) Right paraproct, dorsal view; (21) Left phallomere (L3), dorsal view; (22) median sclerite (L2vm), dorsal view; (23) Right phallomere (R2), dorsal view. Scale bars: 14, 16 = 2.5 mm, 15 = 3.0 mm, 17-18 = 2.0 mm, 19-20, 22-23 = 1.0 mm, 21 = 0.7 mm.

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Figures 24-34
Xestoblatta surinamensis , paratype male: (24) habitus, dorsal view, length 22.8 mm; (25) head, ventral view; (26) pronotum, dorsal view; (27) tergal modification of the tergite VII, dorsal view; (28) subgenital plate, ventral view; (29) supra anal plate, dorsal view; (30) left paraproct, dorsal view; (31) right paraproct, dorsal view; (32) left phallomere (L3), dorsal view; (33) median sclerite (L2vm), dorsal view; (34) right phallomere (R2), dorsal view. Scale bars: 25 = 7.0 mm, 26 = 2.0 mm, 27 = 3.0 mm, 28 = 1.2 mm, 29 = 1.7 mm, 30, 33 = 1.0 mm, 31 = 0.6 mm, 32 = 0.8 mm, 34 = 1.5 mm.

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Figures 35-47
Xestoblatta vera , paratype male: (35) habitus, dorsal view, length 22.4 mm; (36) head, ventral view; (37) Pronotum, dorsal view; (38) Tergal modification of the tergite VII, dorsal view; (39) Subgenital plate, ventral view; (40) Supra anal plate, dorsal view; (41) Left paraproct, dorsal view; (42) Right paraproct, dorsal view; (43) Left phallomere (L3), dorsal view; (44) Apex of left phallomere, dorsal view; (45) median esclerite (L2vm), dorsal view; (46) Apex of mediam sclerite, Scale Bar:0,4mm; (47) Right phallomere (R2), dorsal view. Scale bars: 36 = 1.5 mm, 37 = 3.5 mm, 38 = 3.0, 39 = 1.3 mm, 40 = 1.5 mm, 41, 45, 47 = 1.0 mm, 42 = 0.5 mm, 43 = 0.5 mm, 44 = 0.3 mm, 46 = 0.4 mm.

Figures 1-12 Xestoblatta urucuana sp. nov., holotype male: (1) habitus, dorsal view, length 18.4 mm; (2) head, ventral view; (3) pronotum, dorsal view; (4) tergal modification of the tergite VII, dorsal view; (5) subgenital plate, ventral view; (6) left style, ventral view; (7) supra anal plate, dorsal view; (8) left paraproct, dorsal view; (9) right paraproct, dorsal view; (10) left phallomere (L3), dorsal view; (11) median esclerite (L2vm), dorsal view; (12) right phallomere (R2), dorsal view. Scale bars: 2 = 2.5 mm, 3-4 = 3.0 mm, 5, 11-12 = 1.5 mm, 6 = 0.15 mm, 7 = 1.8 mm, 8-9 = 0.8 mm, 10 = 0.7 mm.

Figures 13-23 Xestoblatta amaparica , paratype male: (13) Habitus, dorsal view, length 23 mm; (14) head, ventral view; (15) Pronotum, dorsal view; (16) Tergal modification of the tergite VII, dorsal view; (17) Subgenital plate, ventral view; (18) Supra anal plate, dorsal view; (19) Left paraproct, dorsal view; (20) Right paraproct, dorsal view; (21) Left phallomere (L3), dorsal view; (22) median sclerite (L2vm), dorsal view; (23) Right phallomere (R2), dorsal view. Scale bars: 14, 16 = 2.5 mm, 15 = 3.0 mm, 17-18 = 2.0 mm, 19-20, 22-23 = 1.0 mm, 21 = 0.7 mm.

Figures 24-34 Xestoblatta surinamensis , paratype male: (24) habitus, dorsal view, length 22.8 mm; (25) head, ventral view; (26) pronotum, dorsal view; (27) tergal modification of the tergite VII, dorsal view; (28) subgenital plate, ventral view; (29) supra anal plate, dorsal view; (30) left paraproct, dorsal view; (31) right paraproct, dorsal view; (32) left phallomere (L3), dorsal view; (33) median sclerite (L2vm), dorsal view; (34) right phallomere (R2), dorsal view. Scale bars: 25 = 7.0 mm, 26 = 2.0 mm, 27 = 3.0 mm, 28 = 1.2 mm, 29 = 1.7 mm, 30, 33 = 1.0 mm, 31 = 0.6 mm, 32 = 0.8 mm, 34 = 1.5 mm.

Figures 35-47 Xestoblatta vera , paratype male: (35) habitus, dorsal view, length 22.4 mm; (36) head, ventral view; (37) Pronotum, dorsal view; (38) Tergal modification of the tergite VII, dorsal view; (39) Subgenital plate, ventral view; (40) Supra anal plate, dorsal view; (41) Left paraproct, dorsal view; (42) Right paraproct, dorsal view; (43) Left phallomere (L3), dorsal view; (44) Apex of left phallomere, dorsal view; (45) median esclerite (L2vm), dorsal view; (46) Apex of mediam sclerite, Scale Bar:0,4mm; (47) Right phallomere (R2), dorsal view. Scale bars: 36 = 1.5 mm, 37 = 3.5 mm, 38 = 3.0, 39 = 1.3 mm, 40 = 1.5 mm, 41, 45, 47 = 1.0 mm, 42 = 0.5 mm, 43 = 0.5 mm, 44 = 0.3 mm, 46 = 0.4 mm.

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A new species of the Xestoblatta surinamensis group from Amazonia, northern Brazil, with redescriptions of X. amaparica , X. surinamensis and X. vera (Blattodea: Ectobiidae)

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[1] Author contributions:

LRSS and SML participated equally in the preparation of this article.