Deltochilum (Aganhyboma) subrubrum Silva, Louzada & Vaz-De-Mello, 2015, new species
Creators: name: Silva, Fernando A. B.
name: Louzada, Júlio
name: Vaz-De-Mello, Fernando
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Scarabaeidae
Deltochilum
Deltochilum subrubrum

description: Deltochilum (Aganhyboma) subrubrum new species
(Figs 23, 41, 86, 94, 123)
Etymology. Subrubrum (reddish), Latin adjective, refers to the color of individuals.
Description. Body. Head, pronotum, elytra and ventral surface dark brown or black, with greenish or reddish metallic sheen. Length 14.8 to 15.8 mm. Head. Foveiform punctures dense, touching on dorsal interocular surface. Punctures around clypeus shallower, smaller, and more dispersed than those on the interocular surface. Dorsal interocular distance approximately four times eye width. Lateral margin of gena strongly curved outward, with row of setae around eyes. Thorax. Surface of pronotum with dense foveiform punctures, touching on the sides and anterior angles (however not as deep as in D. icariforme). Posteromedial punctures separated by at least one diameter. Margin between lateral and posterior angles straight. Elytra. Lateral margins almost parallel (Fig. 123) and surface slightly irregular (rugose). Elytral striae wider, carinate margins clearly separated (as in Fig. 75). Interstriae clearly convex, with its central portion nearly flat. Interstriae usually more punctate on the sides, close to striae. Foveiform punctures of third interstria denser laterally (punctures can be so scattered at center of interstria to produce smooth midlongitudinal strip) (Fig. 86). Microtubercles of interstriae almost inconspicuous. Basal carina of seventh interstria elongate, length about four or more times the width of the seventh interestria. Basal carina of ninth interstria present in three-quarters of elytra (not reaching anterior limit of apical carina of seventh interstria). Apical carina of third interstria rounded, better defined as tubercle, more prominent than apical carinae of second and fourth interstriae. Length of apical carina of sixth interstria longer than that of apical carina of fifth interstria. Length of apical carina of seventh interstria less than or equal to the sum of lengths of apical carinae of fifth and sixth interstriae. Pseudepipleural carina complete, visible entire length of epipleuron (as in Fig. 63).
Material studied. Holotype: ARGENTINA: MISIONES: Loreto, 1955, F. H. Walz (1 ♂ DZUP).
Paratypes [3]: ARGENTINA: MISIONES: Loreto (1 ♀ CEMT); same, San Ignacio (1 ♂ 1 ♀ MNHN).
Diagnosis and remarks (within the icariforme subcomplex): length 14.8 to 15.8 mm; posteromedial punctures of pronotum separated by at least one diameter; length of apical carina of seventh interstria less than or equal to the sum of lengths of apical carinae of fifth and sixth interstriae; microtubercles of elytral interstriae absent or almost inconspicuous. The following aedeagus characters are also diagnostic: parameres symmetric and elongate, directed downward, almost at an angle of 60° with phallobase; apex weakly acuminate (Fig. 23). Lamella copulatrix (LC): left lobe subrectangular (Fig. 41); right lobe "b"-shaped (Fig. 41). Fronto-lateral peripheral sclerite (FLP) as in Fig. 56.
We noted a single female with lateral margins of elytra distinctly curved outward.
description: Published as part of Silva, Fernando A. B., Louzada, Júlio & Vaz-De-Mello, Fernando, 2015, A revision of the Deltochilum subgenus Aganhyboma Kolbe, 1893 (Coleoptera: Scarabaeidae: Scarabaeinae), pp. 451-504 in Zootaxa 3925 (4) on page 488, DOI: 10.11646/zootaxa.3925.4.1, http://zenodo.org/record/244795