Hansreia oxygona ( Perty 1830 )

Valois, Marcely, Vaz-De-Mello, Fernando Z. & Silva, Fernando A. B., 2015, A taxonomic review of the Neotropical genus Hansreia Halffter & Martínez, 1977 (Coleoptera: Scarabaeidae, Scarabaeinae), Zootaxa 4027 (2), pp. 205-226 : 209-210

Hansreia oxygona ( Perty 1830)

( Figs 11 , 18 , 32 –37, 64)

Canthon oxygonus Perty 1830: 37 , plate 8, fig. 3 (original description); Lucas 1857: 98 (catalogue); Harold 1868: 11, 25 (synonymized Canthon oxygonus Perty with Canthon affinis Fabricius ).

Material studied. Lectotype of Canthon oxygonus Perty ♂ (here designated; ZSM): 1. (old label, bordered in green, handwritten) 12. Brasilia. Coprobius oxygonys. Perty./ 2. (old white label, printed and bordered in red, handwritten) Holotypus, Canthon oxygonus Perty , det. D. G. Scherop 1981/ 3. (old white label, printed and bordered in black, handwritten) Hansreia affinis (Fabr.) det. B. Gill 1996./ 4. (red label, printed and bordered in black) Holotype ♂/ 5. (red label, printed and bordered in black, handwritten) Lectotype ♂, Canthon oxygonus Perty des. F.Z. Vaz-de-Mello, 2014.

Non-type material. BRAZIL: PARÁ, Marituba, [1°20’17.3”S, 48°20’38.7”W], X.1961, J & B. Bechyné— 1 ♂ ( MPEG) 1 ♀ (MZUFPA); Belém, Parque Estadual do Utinga, [1°26’11.0”S, 48°25’43.5”W], XI.2012, F. Silva et al. —1 ♀ (MZUFPA); same, V.2009, S. Faveri— 1 ♂ (MZUFPA); Ananindeua, [1°19’12.2”S, 48°21’01.5”W], VII.1960, Inácio— 1 ♂ (MZUFPA); Paragominas, [2°59’33.3”S, 47°20’40.6”W], VII.2011, Solar et al. — 12 ♂ 3 ♀ ( CEMT); Tucuruí, [3°45’33.0”S, 49°40’33.5”W], Martínez—2 ♀ ( CMN).

Diagnosis. Males of H. oxygona are distinguishable from others species by the following combination of characters: Body size greater than 9.3 mm ( Fig. 11 ). Disc of pronotum with weak greenish metallic sheen and smooth surface; sleek surface covering approximately one-fourth of pronotum width ( Fig. 18 ). Aedeagus: [Ventral view]—inner margin at apical third of parameres with small lobe, wider than long (Fig. 35). Endophallus: Lateral lobe of A+SA sclerites with one-fifth of A+ AS length; apex of lateral lobe abruptly narrowed (width of apex about one-third its basal width) ( Fig. 32 ). Horseshoe-shaped sclerite curved, with a shorter “arm” weakly expanded on its inner margin ( Fig. 34 , arrow).

Description. Length. 9.3–10.1 mm. Head. Surface around eye with reddish or greenish sheen; shiny surface extends by approximately twice the eye width in dorsal view. Pronotum. Margin between lateral and posterior angles approximately straight. Disc green with yellowish sheen and two longitudinal, parallels and sleek bands, confluent at the anterior portion; bands bounded laterally on disc by a bow slightly curved outward, weakly defined ( Fig. 18 ). Surface around bands covered by dense ocellate microtubercles; bands separated at posterior portion of disc by a longitudinal depression with evident microgranulation. Elytra. Anterior portion of seventh elytral stria with inconspicuous elevation. Seventh elytral stria inconspicuous on basal sixth of elytra. Eighth stria with punctures weakly impressed; stria narrower on anterior half of elytra, carinate margins touching. Abdomen. Disc of pygidium with rounded and sleek ocellate microtubercles, almost inconspicuous. Secondary sexual characters. Besides the sexual dimorphism mentioned to the genus, females differs from the males in the following aspects: disc of pronotum almost completely shiny and glabrous; anterior portion of pronotum with shiny surface restricted to a narrow longitudinal band (with about 1/10 of pronotum width); posterior portion of the disc with longitudinal and shallow depression. Aedeagus. [Lateral view]—parameres symmetric, rectangular in shape; about two-thirds of phallobase length; apex of parameres, between the apical and dorsal margins, with rectangular projection, as wide as long (Fig. 37); Inner angle between the apical and dorsal margins with approximately 90°. Inner angle between the apical and ventral margins with approximately 45°. [Dorsal view]—inner margins of parameres convergent at apical third (Fig. 36). Endophallus: Complex of A+SA sclerites with elongate shape ( Fig. 32 ). FLP sclerite with irregular shape, about two-thirds of A+SA length ( Fig. 32 ). SRP sclerite circular, with a conspicuous lobe projected outward ( Fig. 33 ).

Figures

FIGURES 10 – 15. Hansreia Halffter & Martínez, dorsal view. 10 — H. affinis (Fabricius), male; 11 — H. oxygona (Perty), male; 12 — H. coriacea (Schmidt), male; 13 — H. krinskii sp. nov., male; 14 — H. peugeoti sp. nov., male; 15 — H. grossii sp. nov., male.

FIGURES 18 – 25. Pronotum. 18 — Hansreia oxygona (Perty); 19 — H. krinskii, male; 20 — H. coriacea (Schmidt), male; 21 — H. coriacea (Schmidt), male, detail of pronotum disc; 22 — H. peugeoti, male; 23 — H. peugeoti, male; 24 — H. grossii, male; 25 — H. grossii, male, detail of pronotum disc.

FIGURES 32 – 34. Endophallus sclerites in Hansreia oxygona (Perty). 32 — Complex of axial and subaxial sclerites (A + SA) (arrow left), and fronto-lateral peripheral sclerite (FLP), (arrow right); 33 — Superior-right peripheral sclerite (SRP); 34 — Horseshoe-shaped sclerite (short arm, arrow). FIGURES 35 – 37. Aedeagus in Hansreia oxygona (Perty). 35 — Ventral view; 36 — Dorsal view; 37 — Lateral view.