Gryne dimorpha Mello-Leitão, 1928: 10

Medrano, Miguel, Kury, Adriano Brilhante & Mendes, Amanda Cruz, 2022, Morphology-based cladistics splinters the century-old dichotomy of the pied harvestmen (Arachnida: Gonyleptoidea: Cosmetidae), Zoological Journal of the Linnean Society 195, pp. 585-672 : 650-653

publication ID	https://doi.org/ 10.1093/zoolinnean/zlab043
publication LSID	lsid:zoobank.org:pub:1C89556A-12CB-43B7-9B49-E02EFF1543D3
DOI	https://doi.org/10.5281/zenodo.6960504
persistent identifier	https://treatment.plazi.org/id/03CA878C-FFF4-FF9E-FCC5-F98CFCD62492
treatment provided by	Plazi
scientific name	Gryne dimorpha Mello-Leitão, 1928: 10
status

Treatment

Gryne dimorpha Mello-Leitão, 1928: 10 View in CoL .

Type data: Syntypes: Brazil. Mato Grosso do Sul: Campo Grande [–20.450189°, –54.560608°], 22 ind. ( MNRJ 1382 View Materials ) .

Non-type material examined: Brazil. Mato Grosso do Sul: Serra da Bodoquena [–20.96863°, –56.70975°, 689 m], 1 ♀ ( MZUSP 71708 View Materials ) ; Chapadão do Sul, PCH do Porto das Pedras [19.38184°, –52.53346°], APL Giupponi & C Sampaio leg., 4 ♂ 2 ♀ ( MNRJ 8449 View Materials ) ; Costa Rica, Fazenda Santa Cruz [–15.79423°, –47.88217°], S Ide leg., 1 ♂ 4 ♀ 1 imm. ( MZUSP 18309 View Materials ) ; 50 km S Campo Grande [–20.98449°, –54.63616°, 464 m], P Salinas leg., 17.vii.1988, 1 ♂ ( AMNH AK 147 View Materials ) . Mato Grosso: PN Chapada dos Guimarães [–15.30495°, –55.8805°), C Mattoni, R Almeida, A Ojanguren & JA Ochoa leg., 1 ♂ ( MZUSP 42864 View Materials ) ; Chapada dos Guimarães, PARNA Chapada dos Guimarães, ponto de erosão [–15.35825°, –55.89777°], P Zanoli leg., 3 ♂ 2 ♀ ( MNRJ 7584 View Materials ) . Distrito Federal: Res. Ecol. IBGE, km 0 of Highway BR 251 [–15.94289°, –47.87478°, 1094 m], 1 ♂ 1 ♀ ( MNRJ 17591 View Materials ) ; [–15.94486°, –47.88521°], 2 ♂ 5 ♀ ( MNRJ 17588 View Materials ) ; Brasilia , [–19.00043°, –50.5539°], APL Giupponi leg., 3 ♂ ( MNRJ 2144 View Materials ) ; Brasília, Fazenda Água Limpa [–15.94667°, –47.9395°], RLC Baptista leg., 1 ♂ 5 ♀ ( MNRJ 6127 View Materials ) ; AB Kury leg., 4 ♂ 3 ♀ ( MNRJ 5414 View Materials ) . Goiás: Nova São Simão , Vila Op. CEMIG [–15.94486°, –47.88521°], F Kisteumacher & U Caramaschi leg., 4 ♂ 11 ♀ ( MNRJ 6137 View Materials ) . Minas Gerais: Fazenda Serra da Moeda [–20.31789°, –44.02936°], A Carneiro leg., 1 ♂ 1 ♀ ( MNRJ 4391 View Materials ) ; Unaí, Grapuava [–16.08944°, –46.55278°, 900 m), EA Araújo leg., 3 ♂ 4 ♀ ( UFMG 19370 View Materials ) . São Paulo: Itirapina [–22.31325°, –47.83786°], LR Fontes, TUG Martins leg., 2 ♂ 3 ♀ ( MZUSP 15964 View Materials ) ; Águas de Santa Bárbara , estação ecológica [–22.8958°, –49.23488°], LR & FR Fontes leg., 1 ♀ ( MZUSP 15970 View Materials ) ; Itirapina [–22.31325°, –47.83786°], MLJ Buschini leg., 1 ♂ ( MZUSP 17452 View Materials ) .

Diagnosis: Differs from other Gryne by having the reticular pattern of spots in DS restricted to ears of chevron ( Fig. 50A View Figure 50 ), dorsal process of glans conical ( Fig. 51A, D View Figure 51 ), stylus with a reduced wattle ( Fig. 51D View Figure 51 ) and by combination for the following features: (1) dorsal scutum smooth, without scattered notable granules ( Fig. 50B View Figure 50 ) and (2) low spines in scutal area I ( Fig. 50B View Figure 50 ).

Distribution: Known for Cerrado and Bahia interior forest in States of Mato Grosso, Mato Grosso do Sul, São Paulo, Minas Gerais and Goiás ( Fig. 48 View Figure 48 ).

Description of male MNRJ 2144 (with extra figures from other specimens): Measurements: CL: 2.15, CW: 2.95, AL: 3.30, AW: 4.84, IOD: 0.63, FeIV: 16.63.

Dorsum ( Fig. 50A–C View Figure 50 ). DS beta-type with attenuate constrictions. Area I with low acuminate tubercles and area III with long spines. Dorsal scutum in lateral view rising steadily from posterior and anterior borders to area III where it is the highest height. Scutal grooves effaced. Anterior edge of dorsal scutum with protoglyphs slightly concave with lateral triangular borders. Ocularium low and with a few granules near the eyes. Posterior border and free tergites each containing a transverse row of minute granules, anal operculum with scattered granules. Coda reduced.

Venter. Coxae I– III triangular, transverse to main body axis. Coxae II – IV connected by tubercular bridges. Coxae I– II with a longitudinal row of granules. Coxa IV pentagonal, greatly developed, oriented obliquely, but almost parallel to the body axis. Stigmatic area T-shaped with stigmata large, unconcealed. Free sternites each with a row of granules.

Chelicerae ( Fig. 51E, F View Figure 51 ). Hand not swollen. Basichelicerite short, with well-marked bulla and uniformly tuberculated dorsally. Posterior and ectal margins of bulla fringed with several tubercles, basal ones are the largest. Movable finger of cheliceral hand with eight truncate tubercles. Fixed finger with four triangular tubercles.

Pedipalps ( Fig. 51G, H View Figure 51 ). Elongate trochanter, foliaceus femur; convex dorsally, with a dorsal row of four fused setiferous tubercles forming a keel and a ventral row of 12 setiferous tubercles. Tibia only slightly convex in the ectal border. One lateral row of setae on each border, distalmost setae of the ectal side larger than others. Tarsus conical, with scattered dorsal setae and two well-marked ventral rows of subequal setae, meso-ventral row with two larger setae, one apical and one median region.

Legs ( Fig. 50C–H View Figure 50 ). Long and unarmed legs, femora straight. Coxa IV covered by DS in dorsal view, with few apical granules, no clavi inguines. Pectinate claws in legs II and IV in two rows. Tarsal counts: 7/8, 14, 10, 11 ( Mello-Leitão, 1928).

Colour (in alcohol, Fig. 50 View Figure 50 ). Dorsal scutum, coxae, pedipalpi and chelicerae deep brown (55). DS with reticulate pattern pale greenish-yellow (104) restricted to laterals of chevron near the carapace. Appendages podomeres (except coxae) brilliant greenish-yellow (98).

Penis ( Fig. 51A–D View Figure 51 ). Ventral plate short trapezoidal, wider at the base, with straight distal margin. Subdistal lateral margin of VP with three pairs of MS-C, large, curve and flattened. Two pairs of MS-D located in apical half of VP, MS-D1 twice longer than MS-D2 and closer to MS-C2, both MS-D straight and conical. Two pairs of MS-A in the basal region in VP, straight, conical and as long as MS-D1 . Two pairs of MS-E in apical portion of lateroventral surface and one pair of MS-B in the basal portion of ventral surface of VP. Ventral surface with two lateral thick stripes composed with microsetae type 4 ( T4 ) surrounding MS-B and MS-E, gently occupying truncus. Glans with rounded dorsal process, stylus with a wattle that reaches the base of stylus and with an extended serrate part. Without stylar barbs .

Variation ( Fig. 50D–H View Figure 50 ). It is possible to differentiate two types of males: (1) major forms, with long tibiae and short metatarsi and (2) minor forms, with shorter tibiae and longer metatarsi, more similar to females. General coloration may be lighter than described above.