Abstract
We describe Avima anitas sp. nov. based on material collected in the Brazilian state of Roraima, representing the first record of Agoristenidae in the State. The new species differs externally from other species of Avima by presenting one proximal tubercle on the mesal face of the male cheliceral segment II and a pair of dark spots partially covering mesotergal area III-IV. The genital differs from other species by the ventral small setae of the ventral plate, which are trifid instead of uniramous or bifid.
Highlights
Agoristenidae is a Neotropical group of Laniatores distributed in the Greater Antilles and northern South America, with the southernmost record in Ecuador (KURY 2003, 2012)
The family is currently divided into three subfamilies, Agoristeninae Šilhavý, 1973, Leiostenindae Šilhavý, 1973, and Globibuninae Kury, 2012, grouping 24 genera and 72 species (KURY 2003, VILLARREAL-M. & RODRÍGUEZ-MANZANILLA 2003, PINTO-DA-ROCHA & HARA 2009, KURY 2012)
The generic name has a complex history. It was considered synonymous with Trinella Goodnight & Goodnight, 1947 by some authors, but was later restored by VILLARREAL & KURY (2009), who detected a case of generic homonym
Summary
The type material is deposited in the Instituto Nacional de Pesquisas da Amazonia (INPA). Differs from other species of Avima by the combination of the following characters: one proximal tubercle on the mesal face of the male’s cheliceral segment II (Fig. 3), a pair of dark spots partially covering mesotergal areas III-IV (Figs 1 and 3), ventral small setae of ventral plate of penis trifid, instead of simple or bifid (Figs 6 and 7). Nov., male holotype (INPA-OP 3399): (1) dorsal view; (2) Lateral view. Segment III (movable finger) with basal, strong tooth and distally serrated hump followed by row of small teeth (Fig. 4). Male (INPA-OP 3399), BRAZIL, Roraima: Serra do Tepequém, S. Nov., male paratype (INPA-OP 3418): (3) habitus, dorsal view; (4) distal portion of male chelicerae; (5) left pedipalp, ventral view; (6-9) penis: (6) dorsal view; (7) lateral view; (8) ventral view; (9) complete lateral view. The number of tubercles on mesotergal areas I-IV is different in the new species, being I(8-10), II(10), III(2) and IV(2) in A. anitas sp. nov. instead of I(4), II(4), III(4) and IV(4) of A. matintaperera, and I(4), II(6), III(6) and IV(6) of A. soaresorum; following Roewer’s description, A. bicoloripes has rows of transversal granules on mesotergal areas
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