Cangazomus gen. nov.

Figs. 4-6, 9-11, 18-20, 26

urn:lsid:zoobank.org:act: 6D708F82-68AB-4E75-BF57-53F4BB43BEA6

Type species. Cangazomus xikrin sp. nov., by monotypy.

Diagnosis. Cangazomus gen. nov. most closely resembles Naderiore gen. nov., Adisomus Cokendolpher & Reddell, 2000, and Piaroa Villarreal, Tourinho & Giupponi, 2008, sharing with them the following characters: (1) four-segmented female flagellum, (2) male flagellum sub-rhomboidal shaped (only some Piaroa species), (3) absence of dorsal eminences on the male flagellum, (3) absence of gonopod in the spermathecae, (4) presence of chitinized arch in the spermathecae, (5) absence of posterodorsal abdominal process on the segment XII, and (6) absence of a single well-developed accessory teeth in the chelicerae. Cangazomus differs from all of them by the presence of two pairs of ramified spermathecal lobes, each composed of a differentiated stalk and distoterminal ramified bulbs (Fig. 20), chitinized arch without AB and notched LT (Fig. 20), pedipalps unarmed and not sexually dimorphic (Fig. 18), and the male flagellar setae Dm 3 as microsetae (Figs. 4-6).

Etymology. In reference to the canga, ferruginous breccias that covers the banded iron formation (BIF), where is located the cave from the type locality, and zomus, part of the name Schizomus . Gender masculine.

Remarks. The spermathecal lobes with ramified bulbs displayed by Cangazomus xikrin (Fig. 20) are a very novel condition among the Neotropical genera of Hubbardiidae; among the New World four-segmented genera, the North American genus Hubbardia Reddell & Cokendolpher, 1995, and the Caribbean genus Luisarmasius Reddell & Cokendolpher, 1995 share both an apparently similar spermathecal morphology, having spermathecae composed of more than three lobes in each side (REDDELL & COKENDOLPHER 1995: 75, 81); however, the presence of multiple spermathecal lobes is a very distinct condition, compared with the presence of two pairs of lobes, each with ramified bulbs, exhibited by C. xikrin (Fig. 20). For this reason, we believe this character represent a synapomorphy for the genus.