ROQUETTEINI MEDRANO, KURY & MENDES, 2022

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 : 648

TRIBE ROQUETTEINI MEDRANO, KURY & MENDES TRIB. NOV.

Zoobank registration: urn: lsid: zoobank. org:act: C101425C-0506-4FDD-AA60-72ED34570E62

Diagnosis: Median-sized, delicate cosmetids with long and unarmed legs ( Fig. 50C ). Area III of mesotergum armed with two spines in females ( Figs 52C , 59B ), males of Roquettea may have modifications in abdomen and carapace, never yellow-coloured. Roquettea and Gryne have major and minor forms of males. Area I with small tubercles or unarmed ( Figs 50B , 59B ). Other areas unarmed. Dorsal scutum (DS) beta-type, with small coda and abdomen covering entirely the coxa IV in dorsal view ( Fig. 54A ). Chelicerae monomorphic without basal spine in movable finger ( Fig. 58E ). Yellowish spots (if present) mostly as small dots or reticulate patterns covering mostly lateral margins of DS, sometimes occupying mesotergum ( Figs 54A , 59A ). Legs III–IV with pectinate claws forming two rows ( Fig. 55E ). Basitarsomeres slightly enlarged in males, but not inflated. Five or six tarsomeres in leg I. VP rectangular with lateral margins sub-parallel ( Fig. 55A ) (a modification exists in the core group of Gryne that have an inverted trapezium shape with base larger, Fig. 51A ). Three pairs of MS-C and two pairs of long MS-A ( Fig. 55A–C ).

Type genus: Roquettea Mello-Leitão, 1931 .

Included genera: Roquettea Mello-Leitão, 1931 and Gryne Simon, 1879 .

Figures

Figure 50. Gryne dimorpha. A–C, male (MNRJ 2144): A, dorsal view; B, lateral view; C, panoramic dorsal view. D, two adult males of different sizes and colours; from left to right: minor form (MNRJ 17591) and major form (MNRJ 2144). E, male, major form (MNRJ 2144), leg IV, tibia, metatarsus and tarsomeres. F, same, detail of tibia, triquetrous metatarsus and tarsomeres. G, male, minor form (MNRJ 17591), leg IV, tibia and tarsomeres. H, same, detail of tibia and tarsomeres. Scale bars: 1 mm.

Figure 51. SEM images of some structures of Gryne dimorpha. A–D, penis (MNRJ 6297): A, dorsal view; B, lateral view; C, ventral view; D, detail of MS-C and stylus, oblique view. E–H, male (MNRJ 2156): E, left cheliceral hand, dorsal view; F, left basichelicerite, dorsal view; G, left pedipalpus, femur, mesal view; H, same, tibia and tarsus, ventral view. Scale bars: 50 μm (A–C), 10 μm (D), 200 μm (E, G, H), 100 μm (F).

Figure 52. Gryne leprosa. A–C, female holotype (ZMUC): A, dorsal view; B, ventral view; C, lateral view. D–G, male lectotype of G. perlata (MNRJ 41773): D, dorsal view; E, dorsal panoramic view; F, lateral view; G, frontal view. Scale bars: 1 mm.

Figure 54. Gryne marginalis. A, male (UFMG 9388), dorsal view. B, same, lateral view. C, same, panoramic dorsal view. D–G, variations of spots pattern in dorsal view: D, male (MNRJ 60252) from Nova Timboteua (Pará, Brazil); E, male, same data; F, female (MNRJ 60251) from Rondon do Pará (Pará, Brazil); G, female, same data. Scale bars 1 mm.

Figure 55. SEM images of some structures of Gryne marginalis. A–D, penis (MNRJ 17579): A, dorsal view; B, lateral view; C, ventral view; D, detail of microsetae, MS-D and MS-E, ventral view. E–I, male (MNRJ 2156): E, claws of left leg IV showing two rows of pectination; F, left cheliceral hand, dorsal view; G, left basichelicerite, dorsal view; H, left pedipalpus, femur, mesal view; I, same, tibia and tarsus, ventral view. Scale bars 200 μm (F, H, I), 100 μm (A, B, G), 50 μm (C, E), 10 μm (D). Abbreviation: MS = macrosetae.

Figure 58. SEM images of some structures of Gryne orensis, male (MNRJ 1381). A, penis, dorsal view. B, same, lateral view. C, same, ventral view. D, left basichelicerite, dorsal view. E, left cheliceral hand, dorsal view. F, left pedipalpus, femur, mesal view. G, same, tibia and tarsus, ventral view. H, same, detail of tarsus, ventral view. Scale bars: 50 μm (A–C), 100 μm (D, H), 200 μm (E–G).

Figure 59. Roquettea andina, female holotype (SMF RII 5873/10). A, dorsal view. B, oblique view. C, original label. Photos courtesy Abel Pérez.