Ligyrus (Ligyrus) paranaensis ( López-García & Deloya, 2019 ) López-García & Deloya, 2022

López-García, Margarita M. & Deloya, Cuauhtémoc, 2022, Cladistic analysis reveals polyphyly of Tomarus (Coleoptera: Scarabaeidae: Dynastinae): new classification and taxonomic revision, Zootaxa 5211 (1), pp. 1-119 : 48

Ligyrus (Ligyrus) paranaensis ( López-García & Deloya, 2019) new combination

( Figs. 9E , 15P , 18H , 26E ; 36 )

Tomarus paranaensis López-García & Deloya, 2019: 133 . Original combination.

Male holotype (USNM) “ BRASIL / Halik 1966 / Collection // Halik / det. 1965 // Ligyrus / gibbosus / DeGeer // Ponta Grossa / Parana / 3.II 1965 / Moses / 26438 // Tomarus paranaensis / López-García & Deloya / HOLOTYPE ”

Description. Habitus as in Fig. 26E . Length 15.5–16.1 mm; humeral width 8.7–9.1 mm. Color dark reddish brown. Head: Frons coarsely punctate, area between eyes nearly impunctate. Frontoclypeal region with a carina, narrowly interrupted at middle. Clypeus slightly narrowed towards apex, base 2 times as wide as apex. Clypeal teeth triangular, separated by a tooth diameter. Mandible with 2 apical, acute teeth and a basal, widely rounded lobe. Maxilla subrectangular; galea with 3 dorsal and 2 ventral teeth. Apex of labrum bilobed. Interocular distance 5 times an eye width. Ocular canthus acute, with ventral setae. Antennal club long, 1.5 times longer than antennomeres 2–7. Pronotum: Surface with small, dense punctures. Apical tubercle and fovea absent. Elytra: First interval punctate, punctures similar to the other intervals. Pygidial surface without rugosity ( Fig. 9E ). Punctures small, evenly distributed. Strongly convex in lateral view. Apex regularly rounded. Legs: Protibia tridentate without a denticle; basal tooth slightly distant from others. Protarsus subcylindrical, not enlarged, inner claw entire. Metatibia strongly narrowed before apex. Apex of metatibia entire, with 17–19 spinules. Female genitalia: Subcoxite subrectangular (2 times wider than long). Coxite subquadrate (as long as wide); surface flat. Subcoxite wider and subequal in length to coxite. Male genitalia: Spiculum gastrale thin, apex truncate. Parameres with a medial tooth on each side; apex widened but ending in an acute, triangular point ( Figs. 15P , 18H ). Internal sac with lamellar spiny belt long (5 times longer than copulatory lamellae), accessory lamella thin and folded.

Diagnosis. Ligyrus paranaensis and L. burmeisteri are similar in their external morphology, but the metatibia is strongly narrowed before apex and has 17–19 spinules on the apical margin in L. paranaensis , while it has the sides nearly parallel and the apical margin with 25–27 spinules in L. burmeisteri . The parameres have the apex acute in L. paranaensis ( Figs. 15P , 18G ) and rounded to subquadrate in L. burmeisteri ( Fig. 15K ; see also fig. 18 in NeitaMoreno and Ratcliffe 2017).

Distribution. It is known only from the type locality, Ponta Grossa (Paraná, Brazil).

Locality records ( Fig. 36 ). 3 examined specimens from USNM and MN/UFRJ. BRAZIL (3). Paraná (3): Ponta Grossa.

Natural history. Specimens known are from the Atlantic Forest biome and they were collected in February.

Figures

FIGURE 9. Pygidium of male. A) Euligyrus ebenus, B) Proculigyrus cicatricosus, C) Ligyrus (Anagrylius) cuniculus, D) L. (Ligyrus) fossor, E) L. (Ligyrus) paranaensis, F) Tomarus bituberculatus, G) T. colombianus, H) T. maracaiboensis, I) T. pilcopataensis, J) T. pullus, K) T. roigjunenti, L) T. rostratus.

FIGURE 15. Parameres in frontal view. A) Euligyrus ebenus, B) E. similis, C) Proculigyrus cicatricosus, D) Ligyrus (Anagrylius) cuniculus, E) L. (Anagrylius) moroni, F) L. (Ligyrodes) peruvianus, G) L. (Ligyrodes) relictus, H) L. (Ligyrodes) sallaei, I) L. (Ligyrus) allonasutus, J) L. (Ligyrus) bidentulus, K) L. (Ligyrus) burmeisteri, L) Ligyrus (Ligyrus) fossor, M) L. (Ligyrus) gibbosus, N) L. (Ligyrus) nasutus, O) L. (Ligyrus) neglectus, P) L. (Ligyrus) paranaensis, Q) L. (Ligyrus) peninsularis, R) L. (Ligyrus) rubripes, S) L. (Ligyrus) ruginasus, T) L. (Ligyrus) villosus.

FIGURE 18. Parameres in lateral view.A) L. (Ligyrus.) allonasutus, B) L. (Ligyrus) bidentulus, C) L. (Ligyrus) burmeisteri, D) Ligyrus (Ligyrus) fossor, E) L. (Ligyrus) gibbosus, F) L. (Ligyrus) nasutus, G) L. (Ligyrus) neglectus, H) L. (Ligyrus) paranaensis, I) L. (Ligyrus) peninsularis, J) L. (Ligyrus) rubripes, K) L. (Ligyrus) ruginasus, L) L. (Ligyrus) villosus.

FIGURE 26. Habitus of the species of Ligyrus. Subgenus Ligyrus: A) Ligyrus fossor, B) L. gibbosus, C) L. nasutus, D) L. neglectus, E) L. paranaensis, F) L. peninsularis, G) L. rubripes, H) L. ruginasus, I) L. villosus. Scale bar: 5 mm.

FIGURE 36. Distributional records of Ligyrus (Ligyrus) paranaensis, L. spinipenis, and L. burmeisteri.