Deltochilum (Aganhyboma) finestriatum 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 finestriatum

description: Deltochilum (Aganhyboma) finestriatum new species
(Figs 11, 28, 36, 45, 53, 63, 74, 92, 116)
Etymology. Named referring to the narrow elytral striae.
Description. Body. Head, pronotum, elytra, and ventral surface black, with a silky sheen. Length 13.3 to 15.8 mm. Head. Punctures extremely dense and touching. Foveiform punctures distributed along the entire dorsal surface; around clypeus shallower, smaller and more dispersed than those on the interocular surface. Lateral margin of gena, around eyes, without row of setae or with almost inconspicuous setae. Dorsal interocular distance approximately three times eye width (as in Fig. 61). Thorax. Surface of pronotum with dense foveiform punctures, nearly touching on the sides, anterior angles and posterior portion. Discal punctures somewhat smaller and more dispersed than those of lateral portion. Anteromedial punctures smaller and more dispersed than discal punctures. Posteromedial punctures usually separated by less than one diameter. Margin between anterior and lateral angles with row of small setae. Margin between lateral and posterior angles approximately straight. Hypomera with dense foveiform punctures on anterior portion; anteromedial punctures separated by less than one diameter. Elytra. Ovalelongate with lateral margins slightly curved outward (Fig. 116) and surface slightly irregular (rugose). Elytral striae narrow, carinate margins close and almost touching (Fig. 74). Interstriae flattened, with foveiform punctures surrounded by glossy areas weakly defined (Fig. 74). Foveiform punctures separated on elytral disc for less than one diameter. Microtubercles dense and weakly defined on most of surface, united by depressed glossy areas making their delimitation difficult (Fig. 74). Basal carina of seventh interstria elongate, length about four times the width of the seventh interestria. Basal carina of ninth interstria present in three-quarters of elytra, but it never reaches the anterior limit of apical carina of seventh interstria (Fig. 63). Apical carina of third interstria elongate, 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 the sum of lengths of apical carinae of fifth and sixth interstriae. Pseudepipleural carina complete, visible entire length of epipleuron (Fig. 63).
Material studied. Holotype: BRAZIL: MINAS GERAIS: Viçosa, Mata do Paraíso, (20º48.135'S, 42º51.525'W), 14.II.2009, Fernando Silva (1 ♂ CEMT).
Paratypes [27]: BRAZIL: [no data] (1 ♀ MNHN); ESPÍRITO SANTO: Rio Bonito, II.1964 (1 ♀ DZUP); MINAS GERAIS: Guanhães, 25.III.1994, J.C. Zamuncio (1 ♀ CEMT); Marliéria, Parque Estadual do Rio Doce, (19°42'09.22"S, 42°30'54.21"W), 11.I.2005, S.S.P. Almeida & M.R. Pereira (1 ♂ CEMT); Ravena, (19°49'46.52"S, 43°49'01.24"W), (1 ♂ CEMT); Viçosa, Mata do Paraíso, X.1998, F.Z. Vaz-de-Mello (1 ♀ CEMT); same, XI.1998, F.Z. Vaz-de-Mello (1 ♀ CEMT); same, (20º48.135'S, 42º51.525'W), 14.II.2009, Fernando Silva (6 ♂ 4 ♀ CREN); PARANÁ: Campina Grande do Sul, Estrada da Mandaçaia, I.2009, F.W.T. Freitas (1 ♀ CEMT); Cornélio Procópio, Parque Estadual Mata São Franscisco, (23°09'20”S, 50°34'20”W), 14.XII.2009, N. Cipola (1 ♂ CEMT); Londrina, Parque Estadual Mata dos Godoy, (23°27'S, 51°14'W), 24.I.2000, J. Lopes (1 ♀ CEMT); RIO DE JANEIRO: Rio de Janeiro, Jardim Botânico, XII.1992, F.Z. Vaz-de Mello (1 ♀ CEMT); SANTA CATARINA: Corupá, XII.1953, Anton Maller (1 ♀ MZUSP); Corupá, 1961, Anton Maller (1 ♀ MZUSP); same, XII.1963, (1 ♀ DZUP); Florianópolis, Lagoa do Peri, (27°49'S, 48°32'W), X.2007, P. Condé & M. Hernández (1 ♀ CEMT); Hansa, I.1941, (1 ♂ MZUSP); SÃO PAULO: Santo André, Rebio Alto da Serra do Paranapiacaba, (23°46'48"S, 46°18'36"W), 18.II.2007, M. Uehara-Prado (1 ♀ CEMT).
Sampling methods. baited pitfall trap with injured diplopods [11 specimens]; flight interception trap [2].
Habitat. Brazil (Espírito Santo, Minas Gerais, Paraná, Rio de Janeiro and Santa Catarina) (Fig. 92). From the available data this species inhabits Atlantic forest, ranging from 0 to 800 m AMSL.
Diagnosis and remarks (within the finestriatum complex): elytra with oval-elongate shape and lateral margins slightly curved outward (Fig. 116); elytral microtubercles dense and poorly defined on most of surface, united by glossy spots with dark brown or black sheen, never copper-red (Fig. 74). The following aedeagus characters are also diagnostic: parameres symmetric and elongate; in lateral view forming an angle of approximately 45° with phallobase; apex rounded (Fig. 11). Genital segment as in Fig. 28. Lamella copulatrix (LC): left and right lobes as in Fig. 36. Superior right peripheral sclerite (SRP) as in Fig. 45. Fronto-lateral peripheral sclerite (FLP) as in Fig. 53.
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 pages 480-481, DOI: 10.11646/zootaxa.3925.4.1, http://zenodo.org/record/244795