Luciuranus desideratus, 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 : 178-181

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

( Figs 30–57 )

Diagnosis. Elytron dark-brown ( Figs. 30 , 48 ). Male with eye small (half as wide as distance between eyes) ( Fig. 34 ); pygidium almost 2x longer than sternum VIII greatest length, with lateral margins subparallel, posterior margin with median third rounded, lacking ventral keels ( Figs. 38–40 ); sternum IX slightly longer than aedeagus, arms of similar length, bearing stout subapical setae, with internal margins subparallel, apices truncate ( Figs. 41– 43 ). Female with antenna filiform ( Fig. 51 ); distance between antennal sockets wider than apical maxillary palpomere greatest width ( Fig. 52 ); pronotum widest at posterior angles, narrower than elytral humeral distance, anterior margin rounded ( Fig. 54 ); elytron subparallel-sided ( Fig. 48 ), sternum VI with posterior margin straight ( Fig. 55 ), sternum and tergum VII connected by membrane; sternum VIII as sclerotized as VII, with posterior margin straight ( Fig. 55 ).

Description. Colour pattern ( Figs. 30–32 , 47–49 ) 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. 36 , 54 ) with lateral margins narrower than distance between elytral humeri, posterior angles acute. Hypomeron ventrally rounded ( Fig. 35 , 53 ).

Male. Eye small (half as wide as distance between eyes) ( Fig. 34 ), shorter than head ( Fig. 35 ); antennomere IV 2x longer than wide ( Fig. 33 ); pygidium almost 2x longer than sternum VIII greatest length, with lateral margins subparallel, posterior margin with median third sinuose, ventral keels absent ( Figs. 38–40 ); sternum VIII moderately emarginated ( Fig. 40 ); sternum IX slightly longer than aedeagus, arms of sternum IX of similar length, bearing stout subapical setae, with internal margins subparallel, apices truncate ( Figs. 41–43 ); syntergite lacking transversal and medial sutures ( Fig. 41 ); aedeagus with phallus divergent basally, then subparallel, basal projections of parameres contiguous, paramere narrowing towards apex, apex internally sinuose ( Figs. 44, 46 ).

Female. Antenna filiform, antennomere III 2x longer than pedicel ( Fig. 50 ); distance between antennal sockets wider than apical maxillary palpomere greatest width ( Fig. 51 ); pronotum widest at posterior angles, narrower than elytral humeral distance, anterior margin rounded ( Fig. 53 ); elytron subparallel-sided ( Fig. 47 ), sternum VI with posterior margin straight ( Fig. 54 ), sternum and tergum VII connected by membrane; sternum VIII as sclerotized as VII, with posterior margin straight ( Fig. 54, 56 ); ovipositor with proximal plates medially fused, longer than wide, weakly sclerotized ( Fig. 57 ).

Etymology. The specific epithet desideratus is a name in apposition, and a Latin word for desired. Females of this new species were first caught in 2014, but males were only collected in 2017.

Type material. Holotype: BRAZIL, Rio de Janeiro, Teresópolis, Parque Nacional da Serra dos Órgãos , 22°27'25'' S, 42°59'7'' W, VI/.2017, L. Silveira, F. Quintarelli, C. Gomes & A. Esperanço leg., male ( DZRJ 1633 ) . Paratypes: Same data of holotype, 22°27'30'' S, 42°59'11'' W, one female ( DZRJ 1628 ) ; same locality, vi.2017, 4 females ( DZRJ 1636 ); idem, one male and one female ( MNRJ) ; same locality, VI/2015, Silveira & Khattar leg., one female ( DZRJ 1626 ) ; same locality, VI/2014, Silveira leg., one female;

Figures

FIGURES30–46.Luciuranus desideratus sp.nov., male.30–32 habitus 30 dorsal, 31 lateral,32 ventral;33antenna, dorsal;34 head, frontal; 35 head and prothorax, lateral; 36 pronotum and mesoscutellum, dorsal; 37 abdomen, detail of ventral view; 38 pygidium, dorsal; 39 sternum VIII and pygidium, detail of lateral view; 40sternum VIII, ventral; 41–43 sternum IX, 41 dorsal, 42 lateral, 43 ventral; 44–46 aedeagus 44 dorsal, 45 lateral, 46 ventral. Scale bar 30–32: 1 mm; 33: 500 µm; 34–36: 200 µm; 37–46: 500 µm.

FIGURES 47–57. Luciuranus desideratus sp. nov., female.47–49 habitus 47 dorsal, 48 lateral, 49 ventral; 50 antenna, dorsal; 51 head, frontal; 52 head and prothorax, lateral; 53 pronotum and mesoscutellum, dorsal; 54 abdomen, detail of ventral view; 55 pygidium, dorsal; 56 sternum VIII, ventral; 57 ovipositor,ventral.Scale bar 47–49: 1mm; 50:500 µm; 51–53:200 µm; 54– 57:500 µm.