Luciuranus carioca, 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 : 181-185

Luciuranus carioca sp. nov. Silveira, Souto & Mermudes 2016

( Figs 75–102 )

Diagnosis. Elytron entirely dark-brown ( Figs. 75 , 92 ). Male with eye small (half as wide as distance between eyes) ( Fig. 79 ); pygidium 3.5x longer than sternum VIII greatest length, with lateral margins slightly convergent posteriad, posterior margin with median third rounded, ventral keels absent ( Figs. 83–85 ); arms of sternum IX lacking stout subapical setae, subparallel, apices rounded, right arm slightly longer ( Figs. 86–88 ). Female with antenna moniliform, antennomere III slightly longer than pedicel ( Fig. 95 ); distance between antennal sockets shorter than apical maxillary palpomere width ( Fig. 96 ); pronotal greatest width greater than distance between posterior angles, wider than elytral humeral distance, anterior margin of pronotum rounded ( Fig. 81 ); elytron moderately dehiscent ( Fig. 92 ), sternum VI with posterior margin straight ( Fig. 99 ), sternum and tergum VII connected by membrane; sternum VII as sclerotized as VIII ( Fig. 99 ), sternum VIII with posterior margin straight ( Fig. 101 ).

Description. Colour pattern ( Figs. 75–77 , 92–94 ) 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. Hypomeron ventrally acute ( Fig. 80 , 97 ).

Male. Eye small (half as wide as distance between eyes) ( Fig. 79 ), shorter than head ( Fig. 80 ); antennomere IV 2x longer than wide ( Fig. 78 ); pronotum with lateral margins narrower than distance between elytral humeri, posterior angles obtuse ( Fig. 81 ); 3.5x longer than sternum VIII greatest length, with lateral margins slightly convergent posteriad, posterior margin with median third rounded, ventral keels absent ( Figs. 83–85 ); sternum VIII strongly emarginated ( Fig. 85 ); sternum IX 3x longer than aedeagus, arms lacking stout subapical setae, subparallel, apices rounded, right arm slightly longer ( Figs. 86–88 ); syntergite bearing a distinct transversal suture, lacking medial suture ( Fig. 86 ); phallus with lateral margins biconcave, basal projections of parameres fused, then projected basally, paramere strongly curved inwards, apex rounded ( Figs. 89, 91 ).

Female. Antenna moniliform, antennomere III slightly longer than pedicel ( Fig. 95 ); distance between antennal sockets greater than apical maxillary palpomere width ( Fig. 96 ); pronotal greatest width greater than distance between posterior angles, wider than elytral humeral distance, anterior margin of pronotum rounded ( Fig. 98 ); elytron moderately dehiscent ( Fig. 92 ), sternum VI with posterior margin straight ( Fig. 99 ), sternum and tergum VII connected by membrane; sternum VIII as sclerotized as VII, with posterior margin straight ( Fig. 99, 101 ); ovipositor with proximal plates separated, membranous, proximal plate as wide as long ( Fig. 102 ).

Etymology. The specific epithet carioca , a name in apposition, is the gentilic name for people from the city of Rio the Janeiro, where this new species was collected.

Type Material. Holotype: BRAZIL, Rio de Janeiro, Rio de Janeiro, Parque Nacional da Tijuca , 22°56’58”S, 043°17’41”W, 786 m, xi.2016, male, L. Silveira & B. Clarkson leg. ( DZRJ 1620 ) . Paratypes: same data as holotype, x.2016, one female ( DZRJ 1621 ) ; same data, one female ( DZRJ 1631 ) ; same data, five males, eight females ( DZRJ 1622 ) ; same data, one male, one female ( MNRJ) ; same data, one male, one female ( MZSP) ; same data, XI/2016 one male, 14 females ( DZRJ 1629 ) .

Figures

FIGURES 75–91. Luciuranus carioca sp. nov., male. 75–77 habitus 75 dorsal, 76 lateral, 77 ventral; 78 antenna, dorsal; 79 head, frontal; 80 head and prothorax, lateral; 81 pronotum and mesoscutellum, dorsal; 82 abdomen, detail of ventral view; 83 pygidium, dorsal; 84 sternum VIII and pygidium, detail of lateral view; 85sternum VIII, ventral; 86–88 sternum IX, 86 dorsal, 87 lateral, 88 ventral; 89–91 aedeagus 89 dorsal, 90 lateral, 91 ventral. Scale bar 75–77: 1 mm; 78: 500 µm; 79–81: 200 µm; 82–91: 500 µm.

FIGURES92–102. Luciuranus carioca sp. nov., female.92–94 habitus 92 dorsal, 93 lateral, 94 ventral; 95 antenna, dorsal; 96 head, frontal; 97 head and prothorax, lateral; 98 pronotum and mesoscutellum, dorsal; 99 abdomen, detail of ventral view; 100 pygidium, dorsal; 101 sternum VIII, ventral; 102 ovipositor, ventral. Scale bar 92–94:1 mm; 95: 500 µm; 96–98: 500 µm; 99– 102: 200 µm.