Deltochilum (Aganhyboma) kolbei Paulian 1938

Silva, Fernando A. B., Louzada, Júlio & Vaz-De-Mello, Fernando, 2015, A revision of the Deltochilum subgenus Aganhyboma Kolbe, 1893 (Coleoptera: Scarabaeidae: Scarabaeinae), Zootaxa 3925 (4), pp. 451-504 : 463-464

publication ID	https://doi.org/ 10.11646/zootaxa.3925.4.1
publication LSID	lsid:zoobank.org:pub:69DADAD6-84DA-4CBE-B653-6527293BA560
DOI	https://doi.org/10.5281/zenodo.6115696
persistent identifier	https://treatment.plazi.org/id/03DE87D5-853E-FF8C-5991-FB1751FCFBE0
treatment provided by	Plazi
scientific name	Deltochilum (Aganhyboma) kolbei Paulian 1938
status

Treatment

Deltochilum (Aganhyboma) kolbei Paulian 1938 View in CoL

( Figs 89 View FIGURES 89 – 92 , 96 View FIGURES 95 – 102 )

Deltochilum (Aganhyboma) kolbei Paulian 1938: 252 View in CoL , 254, Figs 4, 7 View FIGURES 4 – 11 , map n. 2 (original description, taxonomic comments and identification key)

Vulcano & Pereira 1964: 642 (catalogue)

Vaz-de-Mello 2000: 192 (checklist)

Deltochilum kolbei: Blackwelder 1944: 203 View in CoL (checklist)

Description. Body. Completely metallic green, with strong luster. Elytra a little darker than head and pronotum ( Fig. 96 View FIGURES 95 – 102 ). Ventral surface dark green. Length 15 to 17 mm. Head. Dorsal surface with dense punctures close, confluent on anterior and lateral portions. Punctures around clypeus larger and closer than those at center of dorsal interocular surface. Anterior margin of each puncture not defined (impressed). Margin between clypeal teeth and genae curved outward near clypeogenal suture. Thorax. Pronotum smooth, covered with small punctures, apparently simple and uniformly distributed. Punctures on anterior angles larger, with a typical foveiform shape. Margin of pronotum (close to lateral angles) curved inward. Margin between lateral and posterior angles distinctly convex (curved outward). Posterior half of pronotum with rounded shape. Elytra. Smooth surface and strong metallic bright ( Fig. 96 View FIGURES 95 – 102 ). Lateral margins evenly curved outward ( Fig. 96 View FIGURES 95 – 102 ). Elytral striae narrow, with carinate margins close and almost touching. Punctures of elytral striae small and inconspicuous. Interstrial surface with plenty small and scattered punctures. Surface of second interstria more irregular than the others. Basal carina of seventh interstria prominent and short ( Fig. 96 View FIGURES 95 – 102 ). Length of apical carina of seventh interstria approximately two times that of apical carina of sixth interstria. Apical tubercle of second interstria absent or weak. Abdomen.

Punctures large and conspicuous on lateral portions of ventrites, concentrated on anterior and posterior margins and reduced to a narrow belt along midline of abdomen. Pygidium with dense foveiform punctures over entire surface; punctures small, transverse, elliptical and almost confluent. Apex of pygidium rounded. Legs. Protibia sharply widened along inner margin from basal third to apex (as in Fig. 66). Middle protibial tooth closer to apical tooth than to basal tooth (as in Fig. 66). Apical third of metatibia strongly curved inward (as in Fig. 67). Inner margin of metatibia with a longitudinal row of small tubercles. Apex of metatibia with six clearly visible longitudinal carinae. Anterior margin of profemur effaced at middle portion. Foveiform punctures of profemur with transverse elliptical shape. Metatarsus with approximately one-half of length of metatibia. Secondary sexual characters. Since we have been unable to examine a male specimen, it is not possible to verify which characters exhibit sexual dimorphism. However, as this species is closely related to D. trisignatum , we believe the characters cited for D. trisignatum will be similar.

Material studied. Holotype ( MNHN) [examined]: BRAZIL: Bahia, Villa Victoria [Vitória da Conquista] ( CH. PUJOL, 1890; Col. R. OBERTHÜR).

Non-type material [5]: BRAZIL: PARAÍBA: Mataraca, (6°29'S, 34°56'W), IV.2004, V.H. Costa & B. Bellini (1 ♀ CEMT); same, V.2004, V.H. Costa & B. Bellini (1 ♀ CEUFPB); Rio Tinto, Rebio Guaribas, (6°46'S, 35°04'W), III.2002, M.I.M. Hernández (2 ♀ CEUFPB); [RIO GRANDE DO NORTE] (1 ♀ CEMT).

Sampling methods. Flight Interception Trap [4 specimens].

Habitat. Brazil (Bahia, Paraíba and Rio Grande do Norte) ( Fig. 89 View FIGURES 89 – 92 ), from available data this species inhabits lowland Atlantic forest with sandy soil.

Diagnosis and remarks (within the trisignatum complex): body completely metallic green, with strong luster ( Fig. 96 View FIGURES 95 – 102 ); anterior margin of each head puncture not defined (impressed); margin of pronotum (close to lateral angles) curved inward; elytra with smooth surface and strong metallic bright, without ocellate punctures (microtubercles); surface of second interstria more irregular than the others, apical tubercle of second interstria absent or weak.

The green coloration of this species is characteristic and unique among Aganhyboma . The strong bright metallic color of elytra, among other characters, differentiates this species from D. violaceum .