Callyntra pehuenche Zúñiga-Reinoso & Cid-Arcos, 2015

Zúñiga-Reinoso, Álvaro & Cid-Arcos, Mauricio, 2015, A new species of Callyntra (Coleoptera: Tenebrionidae) from central Chile, Zootaxa 4000 (2), pp. 294-298 : 295-297

Callyntra pehuenche Zúñiga-Reinoso & Cid-Arcos n. sp.

( Figs. 1 and 2 ).

Type locality. Chile, San Clemente, El Campanario, camino paso Pehuenche (35°56’01”S- 70°36’38”w).

Type material. Holotype: Chile, San Clemente, El Campanario, camino paso Pehuenche (35°56’01”S- 70°36’38”w). 2.XII.2010. col. M. Cid B., 1♂ ( MNNC: code 7372). Paratypes: Chile, San Clemente, El Campanario, camino paso Pehuenche . 3.XI.2011. col. M. Cid B. and M. Cid A., 1♂ /1♀ (1 MNNC: code 7373, 1 CPMC). 1.XI.2012 col. M. Cid B and J. Cid, 2♂ /2♀ (1 UCCC: code 43102, 1 MNNC: code 7374, 2 CPMC). 15.X.2014. col. M. Cid, 5♂ / 7♀ (3 UCCC: code 43103-43105, 1 GEVOL: code CpehCAM2_1, 2 IADIZA, 6 CPMC).

Holotype Description. Body length of holotype: 16.55 mm. Body, antennae, and legs black. Head: black, frons and clypeus wrinkled. Labrum smooth emarginate. Setae along edge of margin longer laterally. Clypeus glabrous, without punctation, with longitudinal wrinkles, clypeal suture not visible. Frons glabrous without punctation, and completely wrinkled. Vertex slightly raised. Mentum with few wrinkles, and short hairs on near margins. Antennae black with thick white hairs, last three antennomeres having tomentose appearance. Antennae reaching 3⁄4 of pronotal margin length. Third antennomere longer than the first and second. Antennomeres IV, V and VI of similar size, antennomeres VII and VIII smaller than previous. Antennomeres IX and X round and thick. Antennomere XI triangular. Eyes without setae near the base. Thorax: Pronotum glabrous and impunctate, widest at middle. Anterior angles rounded. Anterior margin with minute punctuation, abundant short setae under anterior margin. Central part of anterior margin broad, narrowing towards sides. Lateral margin slightly raised, glabrous and sparsely punctate. Posterior angle projected backwards over elytra. Pronotal disc with two parallel angled carinae, rough between carinae, and between lateral margins and carinae. Proepisternum glabrous, with irregular sparse punctuation. Prosternum convex, semi-wrinkled with medial setae, setae increasing in density towards prosternal apophyses. Prosternal apophysis sub-rectangular, with setae larger in distal portion. Mesosternum punctate, with setae on posterior margin. Metasternum glabrous and wrinkled. Elytra with principal carinae raised and without secondary carinae, glabrous in intercostal area, with white pilosity on posterior half of elytra and in area between carinae and elytral margin, being more evident in the elytral declivity. Elytral suture slightly raised. Elytra with thick transverse rugosity. Lateral margin conspicuous and crenulate. Epipleuron glabrous and smooth. Pseudopleuron glabrous, with slight rugosity.

Abdomen: Sternites glabrous and black, with vertical wrinkles strongly marked on first, second and third ventrite. Ventrites with scattered punctuation. Ventrite V and VI smooth. with two depressions, one between the first and second ventrite and another between the second and third.

Legs: black. Coxae with punctation and small setae on base. Trochanter with white pilosity. Femora with white setae, more abundant on lower face. Tibiae glabrous with many small spines. Tarsi with abundant pilosity. Simple claws on all legs.

Male Genitalia ( Fig 2 ): Aedeagus with the lateral styles of tegmen curved and narrowed towards apex. Proximal margin ventrally bisinuate and projected dorsally over median lobe, wider at base, ventrally incomplete, forming ovoid space in center, with few setae along ventral surface. Basal lamina of tegmen with base rounded. Median lobe tubular, half the width of lateral styles of tegmen, with apical aperture elongated, apex rounded, and distally broadened ( Fig. 2 a).

Sexual dimorphism: Females larger than males. Average length (standard deviation): male = 17.4 mm (±0.85) and female= 19.5 mm (s.d: ±0.61). Male with area between carinae concave and weaker in females. Mesosternum with setae on the posterior margin in males but glabrous in females. Female with vertical wrinkles stronger than males in the first, second and third ventrite. Males with two depressions, one between the first and second ventrite and another between the second and third. Tarsus longer in males than in females, tarsomeres are longer in males.

Diagnosis. Large size (over 15.5 mm). Body and legs black ( C. unicosta with legs orange). Labrum large with sparse short setae ( C. unicosta and C. rugosa with abundant long setae). Clypeus glabrous (in C. rugosa with setae), frons with slight roughness (in C. unicosta smooth and C. rugosa rugous). Pronotum glabrous (hairy in C. unicosta ) with lateral edge of pronotum rounded (in C. rugosa angulate). Pronotal disc with angled carinae (no present in other andean Callyntra ). Tarsus with short and thick setae. Elytral disc concave (no present in other andean Callyntra ) and whit slight roughness (less rough than the other andean species like C. rugosa ). Large aedeagus, lateral styles of tegmen slightly curved, and basal lamina of tegmen flatter. Comparing the genitalia of C. pehuenche , with other species of Callyntra that are morphologically similar ( Callyntra rugosa and Callyntra unicosta ), it shows that this structure differs considerably from this due to the larger size of the aedeagus, the laterals styles were less curved, and basal lamina of tegmen flatter than the others species morphologically similar ( Fig. 2 b). These morphological characters distinguish C. pehuenche from the other species of Callyntra , particularly the morphologically similar species C. unicosta and C. rugosa .

Distribution and habitat. Chile: Region of the Maule: Province of Talca: Commune of The Campanario, near Laguna del Maule through the international pass Pehuenche . Altitude above 2000 meters in environments with Andean steppe.

Etymology. The specific epithet refers to the mountain tribe that is part of the Mapuche culture and lives on both sides of the Andes mountain range in south-central Chile and southwestern Argentina and for the type locality, pass Pehuenche , in the Andean highlands of the maulinos Andes.

Figures

FIGURE 1. Paratypes photography in dorsal view of Callyntra pehuenche Zúñiga-Reinoso & Cid-Arcos n. sp.: a) male and b) female.

FIGURE 2. Male genitalia of Callyntra pehuenche Zúñiga-Reinoso & Cid-Arcos and genitalia comparison externally similar species: a) Dorsal and ventral views of the genitalia. b: basal lamina of tegmen; ls: lateral styles of tegmen, ml: median lobe. b) Contours comparison of lateral view of aedeagus: solid black line: Callyntra pehuenche, gray dotted line: Callyntra unicosta and black dotted line: Callyntra rugosa.