Gonyleptellus angeloi, Ázara & Kury, 2019

Ázara, Ludson Neves De & Kury, Adriano Brilhante, 2019, The mosaic tiled harvestmen-taxonomic review of Gonyleptellus Roewer, 1930 (Opiliones: Gonyleptidae: Gonyleptinae), Zootaxa 4623 (2), pp. 201-238 : 206-210

Gonyleptellus angeloi sp. nov.

( Figs 2–5 , 22A, B, 24)

urn:lsid:zoobank.org:act:8F520F88-81B3-4831-8B9A-0B25D77255F9

Type data. ♂ holotype ( MNRJ 60214 ), Brazil, Rio de Janeiro, Nova Friburgo, Salinas, Fazenda Campestre [- 22.367528°, -42.679427°, 1070 m], 11.xi.2018, A.B. Kury & D.R. Pedroso leg. ; 1 ♂ paratype ( MNRJ 8619 ), RJ, Nova Friburgo, Campo Coelho, Três Picos , Fazenda Campestre [-22.368727°, -42.67872°, 1150 m], 11.iv.2015, A.R. García, A.B. Kury, M.A. Medrano, A.P. Pinto leg. ; 1 ♂ paratype ( MNRJ 9417 ), same data ; 1 ♀ paratype ( MNRJ 9418 ), same data ; 1 ♀ paratype ( MNRJ 6729 ), RJ, Nova Friburgo, Três Picos [-22.3687°, -42.6787°, 1150 m], 16.xi.1991, R.L.C. Baptista leg. ; 2 ♂ paratypes ( MNRJ 18862 ), RJ, Teresópolis, Parque Nacional da Serra dos Órgãos , Trilha Pedra do Sino , [-22.448211°, -43.013389°], 30.xii.2006, A.B. Kury, S. Rompani & L.A. Vaz leg. ; 5 ♂ paratypes (5 beta) ( MNRJ 9234 ), same locality, 06.ix.2012, G.S. Miranda, D.R. Pedroso, O.M. Villarreal leg. ; 3 ♂ (2 beta) 1 ♀ paratypes ( MNRJ 9231 ), same data ; 1 ♂ 1 ♀ paratypes ( MNRJ 6584 ), RJ, Nova Friburgo, Rio Grande de Cima, Fazenda São João [-22.1052°, -42.5609°], 11.ii.1990, A.B. Kury & L.A.S. Kury leg ; 2 ♂ 4 ♀ paratypes ( MNRJ 6333 ), same locality, 10.x.1988, A.B. Kury & R. Pinto-da-Rocha leg.

Etymology. The species name is a noun in the genitive case, meant to honor our friend and colleague Dr. Ângelo Parise Pinto, who participated of one of the expeditions that acquired the original type series.

Type locality. Brazil, Rio de Janeiro, Nova Friburgo [-22.368727°, -42.67872°, 1150 m] .

Geographic distribution ( Fig. 24 ). Brazil, RJ: Nova Friburgo, Santa Maria Madalena, Teresópolis.

Diagnosis (males). This species can be separated from all the rest in the genus by having 40 to 50 large tiles intercalated with medium and small ones, covering all mesotergum; area II is totally filled with tiles; 14 large tiles all across the area V ( Figs 2A, E ). Retroapical apophysis of coxa IV boot-shaped ( Figs 3J, L ); DO2 very stout ( Figs 3A, B, D , 4A, B, D ). It can be distinguished from G. bimaculatus , G. cancellatus and G. pustulosus by possessing the femur IV short and armed retrolaterally with high spines ( Figs 3 A–D, 4); from G. pustulatus by the pair of paramedian blunt spines on area III ( Fig 2E ), absence of stout median dorsal apophysis of trochanter IV ( Figs 3J, K ). Gonyleptellus angeloi resembles G. pustulatus by the short femur IV and the presence of retrolateral row of spines on femur IV ( Figs 3 A–D, 4).

Description. Male holotype (MNRJ 60214).

Measurements. DSL = 9.0 mm, DSW = 10.1 mm, femur IV = 14.5 mm, tibia IV = 9.0 mm, metatarsus IV = 16.0 mm.

Dorsum ( Figs 2A, E ). Anterior margin of carapace with a row of tubercles; laterally with two tubercles on the left side and one on the right side; posterior margin with two tubercles. Frontal hump with anterior portion granulated and bearing six tubercles. Areas I–II unarmed, III with two paramedian blunt spines. Areas I–IV with large and irregular tiles, slightly fragmented at the edges; area II totally filled with tiles; area V with row of 11 large tiles. Lateral margins tuberculate and with tiles densely covering almost the entire margin. Free tergites I–III smooth, I with 11 tiles (two medium-sized, central), II with 10 tiles (one medium-sized, median), III with three tiles (the median large).

Chelicerae. Fixed and movable finger with row of 10 teeth each.

Pedipalps ( Figs 3H, I ). Femur ventrally with four setiferous tubercles and one mesal apical setiferous tubercle; patella ventrally with paramedian apical pair of rows of tubercles. Tibia setation: ectal IiIi, mesal IiI; tarsus setation: ectal IiI, mesal IiI and armed ventrally with two irregular rows of setiferous spines.

Legs ( Figs 3 A–G, J–L, 4). Coxa IV with one retroapical apophysis boot-shaped with heel of boot massive square and vamp as a small rounded triangle, and one long (same length as trochanter IV) proapical apophysis curved backwards with a secondary branch as an acute tubercle ( Figs 3 J–L). Trochanter I with one ventral median tubercle, one retroventral and one proventral tubercle; II–III with one retroapical tubercle; IV with one retromedian apophysis curved frontwards, this with an accessory tubercle at the base, one apical retrolateral tubercle, one promedian apophysis ( Figs 3 J–L). Femur IV: short (1.4 times the length of dorsal scutum), retrolaterally curved at median portion; DO2 well developed with two branches, larger (greater than width of trochanter IV), plus tubercles in all extension; proventral row with rounded high tubercles; retroventral row with tubercles, ending in two medium tubercles; a medium-sized RL1, two small RL2, three medium-sized RL3, RL4 and RL5, respectively, a high RL6, two medium-sized RL7 and RL8, respectively, distal end with four tubercles; retrodorsal row with small spines basally and tubercles distally. Patella and tibia IV with tubercles ( Figs 3 A–D, 4). Metatarsus IV with row of high acuminate tubercles increasing size apically and with apical retroventral and proventral pair of high spines ( Fig. 3E ). Tarsal segmentation: 6(3)/12(3)/7(3)/8(3).

Color ( Figs 2 , 3 , 22A, B). Body and appendages background Deep Yellowish Brown (75) in alcohol, Dark Yellowish Brown (78) in vivo, with lighter mottling on carapace, coxa–trochanter I–IV ventral side and small lighter granules on femur I–III. Oval flecks of carapace of female Brilliant Orange Yellow (67), in vivo Strong Orange (50). Tiles of dorsal scutum and free tergites Light Yellow (86) in alcohol, in vivo Strong Yellow (84). Tiles on female free tergites Pale Yellow (89) in alcohol, in vivo Yellowish White (92).

Female (MNRJ 9418) ( Figs 2C, D, F ).

Measurements. DSL = 9.6 mm, DSW = 9.0 mm, femur IV = 10.0 mm, tibia IV = 6.8 mm, metatarsus IV = 12.9 mm. Similar to male, except for: leg IV unarmed; coxa IV with one retroapical tubercle; trochanter IV with proapical tubercle, retrolaterally with three tubercles (one subbasal, one median and one apical). Pedipalps, tibia setation: ectal IiI, mesal IiIi; tarsus ectal IiI, IiI and armed ventrally with two irregular rows of setiferous spines. Color patches in the areas I–III less dense and with a paramedian pair of whitish yellow spots in the carapace. Tarsal segmentation: 6(3)/11(3)/7(3)/8(3).

Variation. The pustules of the areas I–III and free tergites may vary slightly in size and position in both sexes. Males (n = 13): posterior margin of carapace can have a pair of tubercles, or one tubercle on either side, or none. Beta males are similar to alpha males, presenting all of the main structures, but with a reduction of the size of dorsal scutum, length of legs and reduction of armature. In some beta males, the paramedian pair of yellow spots on carapace is lighter than in females. Females (n = 5): posterior margin of carapace with a pair of tubercles, or one single tubercle on the right side, or smooth.

Figures

FIGURE 2. Gonyleptellus angeloi sp. nov., male paratype (MNRJ 8619) and female paratype (MNRJ 9418), habitus. A, B) male, dorsal and ventral views, respectively; C, D) female, dorsal and ventral views, respectively; E) male, right lateral view; F) female, right lateral view. Scale bars: 1 mm.

FIGURE 3. Gonyleptellus angeloi sp. nov., male paratype (MNRJ 8619). A–D) Right femur IV: A) dorsal view, B) prolateral view, C) ventral view, D) retrolateral view; E) right metatarsus IV, ventral view; F, G) right patella and tibia, dorsal and ventral views, respectively; H, I) right pedipalp, dorsal and ventral views, respectively; J–L) apical portion of right coxa and trochanter IV: J) dorsal view; K) ventral view; L) prolateral view. Scale bars: 1 mm.

FIGURE 4. Gonyleptellus angeloi sp. nov., male paratype (MNRJ 8619). A–D) right femur IV: A) dorsal view; B) prolateral view; C) ventral view; D) retrolateral view. Colors indicate the following six armature rows: brown = DO, pink = PD, orange = PV, green = RV, blue = RL, red = RD. Scale bar: 1 mm.

FIGURE 5. Gonyleptellus angeloi sp. nov. (MNRJ 9234), distal part of penis.A) Dorsal view; B) ventral view; C) right lateral view; D) left lateral view. The macrosetae are highlighted in different colors (MS A = light blue, MS B = purple, MS C = pink, MS D = yellow, MS E = green). Scale bars: 100 μm.

FIGURE 24. Southeastern Brazil, showing known records of the species of Gonyleptellus in Rio de Janeiro State. Colored background areas are the WWF ecoregions. NT0150 = Alto Paraná Atlantic forests, and NT0160 = Serra do Mar coastal forests.