Deltochilum (Aganhyboma) alpercata, Silva, Fernando A. B., Louzada, Júlio & Vaz-De-Mello, Fernando, 2015

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 : 480

Deltochilum (Aganhyboma) alpercata new species

( Figs 10 , 77, 79, 92, 115)

Etymology. “ alpercata " is a typical footwear of the northeastern region of Brazil. The epithet is a name in apposition.

Description. Body. Head, pronotum, elytra, and ventral surface black, with a silky sheen. Length> 14 mm. Head. Punctures extremely dense and touching; 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. Pronotum black with an opaque sheen or a weak luster ( Fig. 115 ). 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 and posterior portions (Fig. 79); anteromedial punctures separated by less than one diameter (Fig. 79). Elytra. Rounded, sides bulging outward ( Fig. 115 ) and surface slightly irregular (rugose). Elytral striae narrow, carinate margins close and almost touching (as in Figs 74, 77). Interstriae flattened, with foveiform punctures surrounded by four or five shiny microtubercles. Foveiform punctures separated on elytral disc by less than one diameter. Microtubercles of interstriae well delimited and conspicuous, with strong luster; interestrial surface around microtubercles opaque (Fig. 77). Basal carina of seventh interstria short, length about twice 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. Apical carina of third interstria 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 or equal to the sum of lengths of apical carinae of fifth and sixth interstriae. Pseudepipleural carina complete, visible entire length of epipleuron (as in Fig. 63).

Material studied. Holotype: BRAZIL: ALAGOAS: Murici, S. Branca, V.1984, F.M. Oliveira (1 ♂ CEMT).

Habitat. Brazil (Alagoas) ( Fig. 92 ), from available data this species inhabits lowland Atlantic forest.

Diagnosis and remarks (within the finestriatum complex): elytra rounded, sides bulging outward ( Fig. 115 ); punctures of anteromedial portion of hypomera separated by less than one diameter (Fig. 79); pronotum black with an opaque sheen or a weak luster ( Fig. 115 ); elytral microtubercles well delimited, with a brown sheen (Fig. 77); interestrial surface around microtubercles opaque (Fig. 77). 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. 10 ). Lamella copulatrix (LC): left lobe subtrapezoidal; right lobe subrectangular. Fronto-lateral peripheral sclerite (FLP) as in Fig. 53.

Although the aedeagus of D. alpercata new species and D. cangalha new species do not present significant difference, the elytral punctures in these species are distinct.

Figures

FIGURES 4 – 11. Aedeagus in Deltochilum (Aganhyboma). 4. D. titovidaurrei new species. 5. D. cupreicolle. 6. D. viridescens new status. 7. D. viridicatum new species. 8. D. amandaarcanjoae new species. 9. D. trisignatum. 10. D. cangalha new species. and D. alpercata new species. 11. D. finestriatum new species. Figures scale = 1 mm.

FIGURES 111 – 118. Species of D. (Aganhyboma). 111. D. acanthus. 112. D. arturoi new species. 113. D. larseni new species. 114. D. cangalha new species. 115. D. alpercata new species. 116. D. finestriatum new species. 117. D. icaroides. 118. D. valgum. Figures scale = 1 mm.

FIGURES 89 – 92. Known distribution of D. (Aganhyboma). 89. trisignatum complex. 90. cupreicolle complex. 91. acropyge complex. 92. finestriatum complex.