Altitatiayus campoi Grossi and Koike, 2011

Grossi, P. C. & Koike, R. M., 2011, Description of a new species of the stag beetle genus Altitatiayus Weinreich (Coleoptera, Lucanidae, Lucaninae), Insecta Mundi 2011 (189), pp. 1-4 : 2-4

Altitatiayus campoi Grossi and Koike , new species

Type material examined. (4 males, and the following fragments: 2 male heads, 3 male elytra, and one female pronotum and elytra). Holotype male labeled: a) “ BRASIL, São Paulo, Piquete / Pico dos Marins, Próx. Maciço / do Ribeirão , 19-V-2008, 2300 m / R. C. G. da Costa leg.” ; b) red label “ Altitatiayus campoi / HOLOTYPUS / Grossi & Koike”, (ex. EPGC deposited at DZUP) . Paratype male labeled as holotype except by 2420 m, 24-vi-2011 ( EPGC). Two paratypes male labeled as holotype except by 10-VII- 2011, 2380 m, K. M. Koike leg. ( EPGC and RMKC) . Paratype males (2 heads) 10-VII- 2011, 2380 m, K. M. Koike leg. ( EPGC) . Paratype males (3 elytra) 10-VII- 2011, 2380 m, K.M. Koike leg. ( DZUP) . Paratype female (pronotum and elytra glued together on the same label) 10-VII- 2011, 2380 m, K.M. Koike leg. ( DZUP). All paratypes labeled as holotype except by the yellow label and “ PARATYPUS ” .

Holotype male description. Length: 14.7 mm. Width: 6.1 mm. Color: Body entirely black, except for lightened areas on femora and tibiae (Fig. 1-2). Head: Shape transverse, 2.2 times wider than long; anterior margin bisinuate; ocular canthi subquadrate, anteriorly with an elevated vertical carina; canthi 1/2 half width of eye; surface finely punctate, punctures fine; disc declivous and weakly concave, vertex nearly parabolic; temporal process weakly developed. Mandibles symmetrical, upturned with apex incurved, apex rounded, not bifurcate; internal margin with 1 large irregular subtriangular tooth bearing 3 smaller teeth, anterior 2 teeth obtuse to rounded, basal tooth acute; at base from internal to external margins with a weak dorsal convex process. Labrum with a triangular median projection, dorsal surface with two convergent rows of setae. Mentum elliptical, anterior margin emarginate; surface punctate, punctures moderate, setose, and concentrated at margins. Pronotum: Shape transverse, 1.5 times wider than long, weakly convex; punctate as on head; anterior margin with two obsolete tubercles; border incomplete anteriorly at middle; anterior lateral angles rounded; lateral margin sinuate; posterior angles weakly produced, rounded. Scutellum : Form crescent-shaped, fine punctures concentrated on disc. Elytra: Shape moderate, as long as head and pronotum together; sides parallel; anteriorly and posteriorly convergent; humeri angulate; disc with 7 strial lines of small punctures, with some scratched longitudinal lines in intervals. Legs: Anterior tibiae with 4–5 external teeth, teeth increasing in size distally; mesotibiae with one median large tooth and 2–3 smaller teeth near base; metatibiae with 1 external tooth at Figures 1-3. Altitatiayus campoi n. sp., male habitus. 1- middle. Male genitalia: Aedeagus symmetrical, 2) Male holotype, dorsal and lateral views. 3) Male median lobe elongate with parallel sides and a nar- paratype walking on the ground near the peak of Pico dos row emargination reaching the end of the first basal Marins. half, in lateral view apex upturned with convex ventral process; internal sac as long as aedeagus with apex globosely enlarged. Female. Only a pronotum and elytra known. Pronotum: Shape less transverse; anterior margin complete, with no tubercles; anterior margin at middle rounded; lateral margins more distinctly rounded. Elytra: Shape less elongate with sides more distinctly rounded.

Variation. Paratype males differ in the following characters. Length: 14.5-18.0 mm. Width: 6.0-7.5 mm. Head: Disc deeply concave; temporal process can be distinctly developed on major males. Mandibles with large subtriangular tooth bearing 0-4 smaller teeth; dorsal process transversely carinate. Legs: All tibiae can be red colored.

Diagnosis. Males of the new species can be easily distinguished from males of the remaining species of the genus by their mandibular shape with a simply rounded (not bifurcate or trifurcate) apex. In addition they have slightly backwardly curved mandibles; pronotum with the anterior margin weakly lobed, and nearly obsolete elytral striae consisting of only small punctures. The simple mandibular apex is the main character differentiating this species from the others. This makes it a weak generic character.

Etymology. The specific epithet is to honor the collector of the first specimens, Rafael Campo Gomes da Costa, who accompanies RMK on collecting trips.