Deltochilum (Aganhyboma) arturoi 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 arturoi

description: Deltochilum (Aganhyboma) arturoi new species
(Figs 82, 91, 112)
Etymology. Named in honour of Fabio Arturo González Alvarado, friend of both authors and good dung beetle taxonomist.
Description. Body. Head, pronotum, elytra and ventral surface black or dark brown, with an evident sheen. Length> 14 mm. Head. Punctures dense but not touching each other; foveiform punctures separated at the dorsal interocular surface by approximately half diameter. Punctures 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. Punctures on the sides, anterior and posterior angles nearly touching. Discal punctures smaller and more dispersed than those of lateral portion, separated approximately by one diameter. Anteromedial punctures smaller and more dispersed than discal punctures. Posteromedial punctures usually separated by at least one diameter. Margin between anterior and lateral angles with row of small setae. Margin between lateral and posterior angles straight, with approximately the same length of margin between anterior and lateral angles. Hypomera with dense foveiform punctures on anterior portion and dispersed on posteromedial portion (Fig. 82); anteromedial punctures separated by approximately half diameter. Diagonal band of hypomera from posteromedial portion to middle of lateral margin with few isolated punctures on otherwise smooth surface (Fig. 82). Elytra. Lateral margins slightly curved outward (Fig. 112) and surface slightly irregular (rugose). Elytral striae with carinate margins clearly separated; some punctures slightly elliptical, separated by regular spacing. Interstriae flattened, with foveiform punctures surrounded by approximately four well-defined shiny microtubercles. Foveiform punctures separated on elytral disc by at least one diameter. Basal carina of seventh interstria elongate, length about four times the width of the seventh interestria. Basal carina of ninth interstria with approximately one-half of elytral length (as in Fig. 80). Apex of second interstria with carina or tubercle inconspicuous. Apical carina of third interstria weaker than apical carina of fourth interstria. Length of apical carina of sixth interstria longer than that of apical carina of fifth interstria. Length of apical carina of seventh interstria approximately equal to the sum of lengths of apical carinae of fifth and sixth interstriae. Pseudepipleural carina incomplete, effaced medially (as in Fig. 80).
Material studied. Holotype: ECUADOR: PICHINCHA: B.P. Milpe, 1200m, IV.2003, Fumigación Dosel, P.Araujo & William Chamorro (1 ♀ CEMT).
Paratype [1]: ECUADOR: SANTO DOMINGO: Santo Domingo (16 Km E), Tinalandia, 25.VII.1985, S. & J. Peck (1 ♀ CMN).
Sampling methods. flight interception trap [1 specimen].
Habitat. Ecuador (Fig. 91), one specimen with label data “tropical rain forest”.
Diagnosis and remarks (within the acropyge complex): length> 14 mm; foveiform punctures of dorsal interocular surface separated by approximately half diameter; foveiform punctures of pronotal disc separated approximately by one diameter; posteromedial punctures of pronotum usually separated by at least one diameter; pronotal margin, between lateral and posterior angles, with approximately the same length of margin between anterior and lateral angles; some punctures of elytral striae slightly elliptical, separated by regular spacing; apical carina or tubercle of second elytral interstria inconspicuous; pseudepipleural carina incomplete, effaced medially (as in Fig. 80). The pattern of hypomera punctures on individuals of this species is also characteristic (Fig. 82).
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 477-478, DOI: 10.11646/zootaxa.3925.4.1, http://zenodo.org/record/244795