Luciuranus magnoculus, Da Silveira & Souto & Mermudes, 2018

Da Silveira, Luiz F. L., Souto, Paula M. & Mermudes, J. R. M., 2018, Four new species of Luciuranus fireflies from the Brazilian Atlantic Rainforest (Coleoptera: Lampyridae), Zootaxa 4413 (1), pp. 173-186 : 175-178

Luciuranus magnoculus sp. nov. Silveira, Souto & Mermudes 2017

( Figs 2–29 )

Diagnosis. Elytron dark-brown, with outer margin pale yellow ( Figs. 2 , 19 ). Male with eye big (slightly narrower than distance between eyes) ( Fig. 6 ); pygidium almost 2x longer than sternum VIII greatest length, with lateral margins subparallel, posterior margin with median third sinuose, lacking ventral keels ( Figs. 10–12 ); sternum IX slightly longer than aedeagus, arms of similar length, bearing stout subapical setae, with internal margins divergent posteriad, apices rounded ( Figs. 13–15 ). Female with antenna filiform ( Fig. 22 ); distance between antennal sockets slightly shorter than apical maxillary palpomere greatest width ( Fig. 23 ); pronotum widest at posterior angles, narrower than elytral humeral distance, anterior margin almost straight ( Fig. 25 ); elytron subparallel-sided ( Fig. 19 ), sternum VI with posterior margin straight ( Fig. 26 ), sternum and tergum VII connected by membrane; sternum VIII as sclerotized as VII, with posterior margin straight ( Fig. 28 ).

Description. Colour pattern ( Figs. 2–4 , 19–21 ) overall dark brown, except by the translucent sternum VIII and outer margins of pygidium, and the yellow spots of rudimentary larval lanterns on sternum VIII. Pronotum ( Figs. 8 , 25 ) widest at posterior angles, with lateral margins narrower than distance between elytral humeri, posterior angles acute. Hypomeron ventrally rounded ( Fig. 7 , 24 ).

Male. Eye big (slightly narrower than distance between eyes) ( Fig. 6 ), taller than head ( Fig. 7 ); antennomere IV 3x longer than wide ( Fig. 5 ); pygidium almost 2x longer than sternum VIII greatest length, with lateral margins subparallel, posterior margin with median third sinuose, ventral keels absent ( Figs. 10–12 ); sternum VIII strongly emarginated ( Fig. 12 ); sternum IX slightly longer than aedeagus, arms of sternum IX of similar length, bearing stout subapical setae, with internal margins divergent posteriad, apices rounded ( Figs. 13–15 ); syntergite lacking transversal and medial sutures ( Fig. 13 ); aedeagus with phallus divergent basally, then subparallel, basal projections of parameres contiguous, paramere narrowing towards apex, apex internally sinuose ( Figs. 16, 18 ).

Female. Antenna filiform, antennomere III 2x longer than pedicel ( Fig. 22 ); distance between antennal sockets slightly shorter than apical maxillary palpomere greatest width ( Fig. 23 ); pronotum widest at posterior angles, narrower than elytral humeral distance, anterior margin almost straight ( Fig. 25 ); elytron subparallel-sided ( Fig. 19 ), sternum VI with posterior margin straight ( Fig. 26 ), sternum and tergum VII connected by membrane; sternum VIII as sclerotized as VII, with posterior margin straight ( Fig. 28 ); ovipositor with proximal plates medially fused, longer than wide, weakly sclerotized ( Fig. 29 ).

Etymology. The specific epithet magnoculus is a name in apposition, and comes from the Latin magnus, and oculus, which refers to the big eyes of this new species.

Type material. Holotype: BRAZIL, Rio de Janeiro, Itatiaia, Parque Nacional do Itatiaia , 22°25'01'' S, 44°38'33'' W, 1846 m, ii.2015, Silveira, Khattar & Monteiro leg., male ( DZRJ 1625 ) . Paratypes: Same data of holotype, two females ( DZRJ 1623 ) ; same data, Monteiro leg., one female ( DZRJ 1624 ) ; same data, Monteiro leg., one female ( DZRJ 1624 ) ; same data, Monteiro, Khattar & Silveira leg., one female ( DZRJ 1590 ) ; same data, one female ( MNRJ) .

Figures

FIGURES 2–18. Luciuranus magnoculus sp. nov., male. 2–4 habitus 2 dorsal, 3 lateral, 4 ventral; 5 antenna, dorsal; 6 head, frontal; 7 head and prothorax, lateral; 8 pronotum and mesoscutellum, dorsal; 9 abdomen, detail of ventral view; 10 pygidium, dorsal; 11 sternum VIII and pygidium, detail of lateral view; 12 sternum VIII, ventral; 13–15 sternum IX, 13 dorsal, 14 lateral, 15 ventral; 16–18 aedeagus 16 dorsal, 17 lateral, 18 ventral.Scale bar 2–4: 1 mm; 5: 1 mm; 6–8: 200 µm; 9–18: 200 µm.

FIGURES19–29. Luciuranus magnoculus sp. nov., female.19–21 habitus 19 dorsal, 20 lateral, 21 ventral;22 antenna, dorsal; 23 head, frontal; 24 head and prothorax, lateral; 25 pronotum and mesoscutellum, dorsal; 26 abdomen, detail of ventral view; 27 pygidium, dorsal; 28 sternumVIII, ventral; 29 ovipositor,ventral.Scale bar 19–21:1 mm; 22:500 µm; 23–25:500 µm; 26– 29:500 µm.