Dissomphalus joaquinae Colombo & Alencar & Limeira-De-Oliveira & Azevedo 2018, sp. nov.

Dissomphalus joaquinae Colombo & Azevedo sp. nov.

(Figs 56–59)

Description. Male. Head and mesosoma black; metasoma dark castaneous. Mandible with three apical teeth; median clypeal lobe trapezoidal, median tooth undefined, high in lateral view; frons coriaceous, punctate, eyes setose. Notauli complete; pronotal disc coriaceous, punctate. Metasomal tergite II with lateral depression composed of tubercle with wide fovea, thick and conspicuous bristles on the border of each depression. Posterior hypopygeal margin straight. Genitalia: paramere with weakly rounded apex, slightly arched inward, wide, as long as basiparamere, pointed projection in ventral view; aedeagal ventral ramus as long as dorsal body, apex bifurcated forming two teeth, pointed, laminar, curved dorsally; aedeagal dorsal body with two pair of apical lobes, dorsal margin folded across its length, wide, apical and ventral margins weakly serrated, inner pair membranous, spineshaped, basal process absent; apodeme extending beyond genital ring. Female unknown.

Remarks. This species belongs to the setosus species-group by having the tergal process with the lateral depression with one pair of tubercles and the lateral margin setose. It is similar to D. magnus Redighieri & Azevedo by having the mandible with three apical teeth, the posterior hypopygeal margin straight, and the aedeagal dorsal body with two pairs of apical lobes. However, D. joaquinae sp. nov. has the median clypeal lobe trapezoidal, the paramere without dorsal margin with the apical spine, the aedeagal ventral ramus with the apex bifurcated, whereas D. magnus, has the median clypeal lobe tridentate, the paramere with the dorsal margin with an apical spine, the aedeagal ventral ramus with the apical half divided in two long tubular rami.

Material examined. Holotype ♂, BRAZIL, MA[ranhão], Carolina, PN Chapada das Mesas, Riacho Cancela, 07°06'44.2''S 47°17'56.8''W, 255m, 01–10.VIII.2013, Armadilha suspensa, JA Rafael, F Limeira-de-Oliveira, TTA Silva cols. (CZMA). Paratypes: 3♂ same data of holotype, except: 01–31.VII.2013 (CZMA).

Etymology. The epithet joaquinae is named after the folklore of a ghost, Ana Joaquina Jansen Pereira, a rich woman from São Luís (Maranhão), who was forced to perpetually wander in the streets of the city, because she used to mistreat her slaves. Treat as a noun in apposition.

Distribution. Brazil (Maranhão).