A new species of Novamundoniscus Schultz, 1995 (Isopoda, Oniscidea, Dubioniscidae) from the state of Tocantins, Brazil

The genus Novamundoniscus includes eight species with distribution in Brazil and Venezuela. The new species Novamundoniscus adhara Campos-Filho & Cardoso sp. nov. from the state of Tocantins, northern Brazil, is described, which represents the first record to the family for the state of Tocantins. Key-Words. Terrestrial isopods; Northern Brazil; Neotropical region.

A new species of Novamundoniscus collected in the Brazilian state of Tocantins, is described herein, which represents the first record of Dubioniscidae for the state.

MATERIAL AND METHODS
The material was preserved in 75% ethanol and descriptions were based on morphologi-cal characters. The species were illustrated with the aid of a camera lucida mounted on Olympus CH-2 microscopes. The habitus illustrations were obtained with the aid of a camera Sony DSC-W800 mounted on Biofocus SQF-L-BI microscope. The final illustrations were prepared using the software GIMP with the method proposed by Montesanto (2015Montesanto ( , 2016. The material used in this study is deposited in the Museu de Zoologia, Universidade de São Paulo, São Paulo, Brazil (MZUSP).
Pereopod 1 with transverse antennal grooming brush, carpus with distal seta double-fringed at apex; dactylus of two claws subequal in length, ungual seta and dactylar organ simple and not surpassing outer claw.

Etymology:
The new species name, Adhara, is used as name in apposition and refers to a star, located at the Canis Majoris constellation from Southern Celestial Hemisphere. In the Brazilian National flag the Adhara star represents the state of Tocantins, where the specimens were collected.

DISCUSSION
As mentioned previous, the genus Novamundoniscus comprises seven species from Brazil. The genus mainly differs from Dubioniscus in having the antennal flagellum with articles subequal in length (vs. third article reduced in Dubioniscus), and cephalon without frontal V-shaped depression (vs. frontal V-shaped depression present in Dubioniscus) (see also Cardoso et al., 2016); it differs from Calycuoniscus in having the distal portion of telson triangular (vs. distal portion of telson rounded in Calycuoniscus) (see also Lemos de Castro, 1968;Schmidt, 2003). Based on mentioned characters, the species described in this work is allocated in the genus Novamundoniscus.
Novamundoniscus adhara Campos-Filho & Cardoso sp. nov. easily differs from the congeneric species in the shape of male pleopods 1 and 2.