Guaporeptus paradisius Hoffman, 1988

Iniesta, Luiz Felipe Moretti, Bouzan, Rodrigo Salvador, Battirola, Leandro Dênis & Brescovit, Antonio Domingos, 2022, New records for the poorly-known monotypic genera Exallostreptus and Guaporeptus, and a list of species from Mato Grosso state, Brazil (Diplopoda: Spirostreptida: Spirostreptidae), Papéis Avulsos de Zoologia 62, pp. 1-12 : 4-5

Guaporeptus paradisius Hoffman, 1988

( Figs. 1 ; 3 ; 6 C-D; 7-8)

Guaporeptus paradisius Hoffman, 1988a: 329 (male holotype and female paratype from Alto Paraíso, Rondônia, Brazil, 23-26.xii.1983, P.E. Vanzolini leg., deposited in MZSP, examined).

Note: Specimens identified by Hoffman and housed at MZSP were erroneously labeled by the author as G. petaloproctus [sic].

Diagnosis: Same for the genus.

Material examined: Brazil: Mato Grosso: CotriguaÇu, Fazenda São Nicolau [09°51′21.9″S, 58°14′51.8″W], 11.xii.2009, L.D. Battirola leg., ♀ ( ABAM) ; 13.xii.2009, D.A. Batistella leg., ♀ ( ABAM) ; ♂, ♀ ( ABAM) ; 08.xii.2009, 3 ♂♂, ♀, 2 immatures ( ABAM 0075 ) ; 13.xii.2010, 2 ♂♂ ( ABAM 0087 ) ; 10.xii.2010, 4 ♂♂ ( ABAM 0090 ) ; 02.xi.2014, M. Karam-Gemael leg., 6 ♂♂, ♀, 1 immature ( CZUFMT), Chapada dos Guimarães [15°28′00.9″S, 55°45′04.8″W], REA, Sítio II, Floresta Galeria, 27.ix.2005, 3 ♂♂, 4 ♀♀, 1 immature ( CZUFMT) .

Descriptive notes: Male and female, see description in Hoffman (1988a: 329, figs. 8-14). Size: Body length 47.5-51 mm., vertical midbody diameter 4-4.8 mm., 51-54 podous body rings. The examined specimens from Mato Grosso perfectly fit the original description of G. paradisius . Males agree in having birdhead-shaped distolateral metaplical process (dmp), short antetorsal process curved mesad; telopodite (tp) with two complete 360° torsions ( Figs. 7 A-B; 8D). The first leg-pair has a subtriangular and glabrous prefemoral process (pfp), as noted by Hoffman (1988a: 331) ( Fig. 6 C-D). Small ventral pads on postfemur and tibia on midbody leg-pairs ( Fig. 6D ). Females with nonsexual characters as in males ( Fig. 3 C-D).

Distribution: The species was known only from its type locality in Alto Paraíso, Rondônia; now also known from surrounding areas in the state of Mato Grosso (Madeira and Cerrado provinces).

Figures

Figure 1. Distribution map of Exallostreptusvanzolinii (triangle) and Guaporeptus paradisius(square).Thecolours scheme refers tothe biogeographical regionalization of the Neotropical region (see Morrone, 2014). Abbreviations:Mp = Madeira province;XTp = Xingu-Tapajós province;Rp = Rondônia province;Cp = Cerrado province.This figure is in color in the electronic version.

Figure 3. Guaporeptus paradisius. Male: (A) Anterior region; (B) Posterior region. Female: (C) Anterior region; (D) Posterior region. Scale bars in A-D = 2 mm.This figure is in color in the electronic version.

Figure 6. First leg-pair of males, SEM images:Exallostreptus vanzolinii: (A) First leg-pair in anterior view; (B) Detail of prefemoral process. Guaporeptus paradisius: (C) First leg-pair in anterior view;(D) Detail of prefemoral process.Scale bars in A, C = 1 mm;B,D = 400 µm. See abbreviations in materialand methods.This figure is in color in the electronic version.

Figure 7. Guaporeptus paradisius, males: (A) Gonopods in anterior view; (B) Gonopods in posterior view; (C) Second leg-pair; (D) Midbody leg-pair, SEM image detailing ventral pad.Scale bars in A-C = 1 mm;D = 2 mm.See abbreviations in material and methods.This figure is in color in the electronic version.