Deltochilum (Aganhyboma) viridescens Martinez 1948, new status
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 viridescens

description: Deltochilum (Aganhyboma) viridescens Martínez 1948 new status
(Figs 6, 26, 34, 43, 51, 60, 64, 68, 71, 73, 90, 101, 102, 103)
Deltochilum cupreicolle ssp. viridescens Martínez 1948, 171 (original description) Deltochilum (Aganhyboma) cupreicolle viridescens Martínez 1959: 52 (catalogue) Martínez 1987: 55 (checklist)
Deltochilum cupreicolle viridescens Silva et al. 2012: 1359 –1367 (predatory behaviour study)
Description. Body. Head and elytra dark green, with a metallic sheen. Pronotum light brown, with green spots (Fig. 101). Ventral surface with metallic dark green. Length 12 to 14 mm. Head. Dorsal surface with dense foveiform punctures not confluent, separated at center of dorsal interocular surface by approximately twice their diameter (Fig. 60). Punctures of variable size; largest around the eyes and smallest on the anterolateral portion, next to the clypeus. Anterior margin of each puncture not defined (Fig. 60). Margin between clypeal teeth and genae curved outward approximately at halfway of its length. Thorax. Surface of pronotum with small punctures, apparently simple and uniformly distributed. Punctures located on anterior angles larger, with a typical foveiform shape. Pronotum with a narrow greenish band extending the entire edge; posteromedial portion with a semi-circular band which extends up to half of pronotal disc (Fig. 101). Margin of pronotum (close to lateral angles) straight and emarginated, without depression. Margin between lateral and posterior angles approximately straight. Elytra. Slightly elongate (Figs 101–103). Striae well impressed and punctate (Fig. 71). Interstrial surface with small, dispersed foveiform punctures, amid small bright ocellate punctures, randomly distributed. First interstria brighter than rest of elytra. Basal carina of seventh interstria prominent and elongate, extending a little further than humeral callus portion (Fig. 71). Length of apical carina of seventh interstria three times that of apical carina of sixth interstria. Abdomen. Punctures large and conspicuous, concentrated anterolaterally on each sternite, reduced to a narrow belt along midline of abdomen (Fig. 73). Foveiform punctures of pygidium denser on medial portion, some confluent. Apex of pygidium strongly acuminate (Fig. 73). Legs. Protibia not abruptly widened (Fig. 101). Middle protibial tooth equidistant between apical and basal teeth. Protibial spur acuminate at apex. Apical third of metatibia only slightly curved inward (Figs 68, 101), with five clearly visible longitudinal carinae. Inner margin of metatibia without longitudinal row of small tubercles. Anterior edge of profemur completely emarginate, with abundant setae in two-thirds of its length. Foveiform punctures of metafemur with transverse or oblique elliptical shape (Fig. 64). Metatarsus with two-thirds of metatibia length. Secondary sexual characters. Male abdomen more longitudinally flattened than that of female. Males may possess medially between first and second ventrites, a small tubercle. Apical margin of pygidium longer in male. Protibial spur more acuminate in female.
Material studied. Holotype (MACN) [not examined]: ARGENTINA: Prov. Salta, Depto. Rosario de la Frontera, El Naranjo. The original description, as well as the examination of a specimen of CMN which was compared to the holotype, are sufficient to confirm the identification of this species.
Non-type material [55]: BRAZIL: BAHIA [doubtful]: Barro Preto, Ch. Pujol (8 MNHN); DISTRITO FEDERAL: Universidade de Brasília (1 ♂ CEMT); GOIÁS: Jataí, 1955 (1 ♀ MZUSP); Jatahy, 1895–96, Ch. Pujol (1 MNHN); Mineiros, Parque Nacional das Emas, (18°04'S, 52°55'W), 15–19.XII.1987, expedição MZUSP (1 ♂ 1 ♀ MZUSP); MATO GROSSO: Cuyaba (1 MNHN); Cuiabá, XII.1945 (1 ♀ MZUSP); Chapada dos Guimarães, X.1937, Pinto (1 ♀ MZUSP); Chapada dos Guimarães, 27.X.1961, F.M. Oliveira (4 ♂ 7 ♀ DZUP); Chapada dos Guimarães, XI.1963, Alvarenga & Werner (1 ♀ MZUSP); Rosário Oeste, XII.1959, (1 ♂ DZUP); Uirapuru, Chapada dos Parecis, XII.2002, A. Foucart (1 ♀ CEMT); 30 Km norte de Uirapuru, (14°17'S, 59°15'W), 15.XII.2001, A. Foucart (3 ♂ CEMT); SÃO PAULO, Itirapina, 15.III.2000, (1 ♂ CEMT); Itirapina, II.2000, G. Machado (2 ♀ CEMT); Itirapina, Estação Ecológica, (22°13'S, 47°54'W), 30.I.2009, Fernando Silva (6 ♂ 9 ♀ CEMT). PARAGUAY: AMAMBAY: Cerro Corá, XII. 1993, Drechsel (1 ♂ CEMT); CAAGUAZÚ: Caaguazú, XII.1977, Martínez/Fritz (1 ♀ CMN); CONCEPCIÓN: Horqueta, 1934, Schulze (1 ♀ CMN); GUAIRA: Villarrica, II.1922 (1 ♂ CEMT).
Sampling methods. baited pitfall trap with injured diplopods [15 specimens]; flight interception trap [3].
Habitat. Brazil (Bahia, Distrito Federal, Goiás, Mato Grosso and São Paulo) and Paraguay (Fig. 90), from available data this species inhabits Cerrado and Chaco. 15 individuals were collected in "Campo Sujo", Cerrado, 731 m AMSL.
Diagnosis and remarks (within the cupreicolle complex): head dark green, with a metallic sheen; basal carina of seventh interstria elongate, extending a little further than humeral callus portion (Fig. 71); apex of pygidium strongly acuminate in male (Fig. 73). The following aedeagus characters are also diagnostic: parameres shorter than phallobase, rounded at apex, in lateral view forming an angle of approximately 30° with phallobase (Fig. 6). Lamella copulatrix (LC): left lobe “J”-shaped (Fig. 34); right lobe with shape similar to a human leg (Fig. 34). Superior right peripheral sclerite (SRP) as in Fig. 43. Fronto-lateral peripheral sclerite (FLP) as in Fig. 51. Center of genital segment with two well-sclerotized portions with oval shape (Fig. 26).
Pronotum can be yellow, red or brown. Posteromedial portion of pronotum can show only a small and inconspicuous greenish band.
Body coloration can be completely green (Fig. 102). Through the study of original description, as well as the examination of a specimen of CMN, which had been compared with the holotype, we concluded that the type specimen (entirely green) is a variant of the most common coloration pattern for species.
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 468-469, DOI: 10.11646/zootaxa.3925.4.1, http://zenodo.org/record/244795