Deltochilum (Aganhyboma) icariforme Paulian 1938
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 icariforme

description: Deltochilum (Aganhyboma) icariforme Paulian 1938 new subgeneric placement
(Figs 21, 32, 40, 57, 94, 120)
Deltochilum (Deltochilum) icariforme Paulian 1938: 269, 273, 276, Fig. 18, map n.5 (original description, taxonomic comments and identification key)
Deltochilum icariforme: Blackwelder 1944: 203 (checklist)
Deltochilum (Deltochilum) icariniforme: Martínez 1947: 274 (comments about geographical distribution)
Deltochilum (Deltohyboma) icariforme: Martínez 1959: 53 (catalogue)
Vulcano & Pereira 1964: 655 (catalogue); Vaz-de-Mello 2000: 192 (checklist)
Description. Body. Head, pronotum, elytra and ventral surface with copper coloration and a reddish metallic sheen. Length 14.5 to 15.8 mm. Head. Foveiform punctures dense and deep, touching on dorsal interocular surface. Dorsal interocular distance approximately three times eye width. Lateral margin of gena strongly curved outward, with row of setae around eyes. Thorax. Surface of pronotum with deep and dense foveiform punctures, nearly touching on the sides and anterior angles. Anteromedial punctures more dispersed than those of surrounding surface. Margin between lateral and posterior angles straight. Posteromedial punctures separated by less than one diameter. Elytra. Lateral margins slightly curved outward, almost parallel (Fig. 120). Surface slightly irregular (rugose). Elytral striae wider, carinate margins clearly separated (as in Fig. 75). Interstriae clearly convex, with its central portion nearly flat. Interstrial surface with foveiform punctures surrounded by microtubercles weakly defined. Interstriae surface usually more punctate on 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) (as in Fig. 86). Basal carina of seventh interstria elongate, length about four or more times seventh interestria width.
Basal carina of ninth interstria present in three-quarters of elytra (not surpassing anterior limit of apical carina of seventh interstria). Apical carina of third interstria weaker 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 longer than the sum of lengths of apical carina of fifth and sixth interstriae. Pseudepipleural carina complete, visible entire length of epipleuron (as in Fig. 63).
Material studied. Lectotype (MNHN) [here designated]: 1. [old white label, bordered and printed in black]. Jatahy/ Etat de Goyaz/ Ch. Pujol 1895–96; 2. [old white label, handwritten]. icariforme n. sp. Type; 3. [old white label, bordered and printed in black]. R. PAULIAN/ Vidit; 4. [red label, bordered and printed in black]. LECTOTYPE; 5. [white label, handwritten, bordered and printed in black]. Deltochilum icariforme Paul. LECTOT FVaz-de-Mello des. 2013.
In the original description, Paulian (1938) stated that the “ type ” was deposited in the Oberthür collection. After examining the list of the specimens used by the author to describe the species, we found that only one individual from Jataí (Goiás) and one from Lacerda (Bahia) were deposited in this collection.
We examined three of the five specimens listed in the original description. These were labeled by Paulian with the designation of " type " and deposited in the Muséum National d'Histoire Naturelle (MNHN), Paris, France. Two of them correspond to the specimens from Jataí and Lacerda mentioned above, and the third is from Paraguay. After careful analysis, we concluded that these individuals represent three different species.
Thus, with the purpose of stabilizing nomenclature by choosing the name-bearing specimen, we designate the specimen from Jataí (Goiás) as the lectotype of D. icariforme. The specimen from Bahia represents a new species described here as D. ritamourae new species, and the specimen from Paraguay is D. icaroides.
Non-type material [5]: BRAZIL: MATO GROSSO: Rio Verde, XI.1963 (1 ♂ DZUP); SÃO PAULO: Itirapina, 27.II.2000, G. Machado (1 ♀ CEMT); Itirapina, Estação Ecológica, (22°13'S, 47°54'W), 30.I.2009, Fernando Silva (2 ♂ CEMT); Pirassununga, E.E.C.P., 29.X.1945, Schubart (1 ♂ MZUSP).
Sampling methods. baited pitfall trap with injured diplopods [2 specimens].
Habitat. Brazil (Goiás, Mato Grosso and São Paulo) (Fig. 94). From available data this species inhabits Cerrado. Two specimens with label data "Campo Sujo", Cerrado.
Diagnosis and remarks (within the icariforme subcomplex): length 14.5 to 15.8 mm; length of apical carina of seventh interstria longer than the sum of lengths of apical carina of fifth and sixth interstriae; basal carina of ninth interstria present in three-quarters of elytra (not surpassing anterior limit of apical carina of seventh interstria). The following aedeagus characters are also diagnostic: parameres symmetric and elongate, in lateral view forming an angle of approximately 45° with phallobase; apex acuminate (Fig. 21). Genital segment as in Fig. 32. Lamella copulatrix (LC): left lobe trapezoid (Fig. 40); right lobe subrectangular (Fig. 40). Fronto-lateral peripheral sclerite (FLP) as in Fig. 57.
The body coloration of some specimens can vary between dark brown, copper or red, with reddish or greenish sheen. In some specimens, apical carina of third interstria can be somewhat more prominent than apical carina of second and fourth interstriae, with a rounded form, resembling a tubercle.
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 485-486, DOI: 10.11646/zootaxa.3925.4.1, http://zenodo.org/record/244795