Costalampys pauper (Olivier, 1899) da Silveira & Roza & Vaz & Mermudes, 2021

da Silveira, Luiz Felipe Lima, Roza, Andre Silva, Vaz, Stephanie & Mermudes, Jose Ricardo M., 2021, Description and phylogenetic analysis of a new firefly genus from the Atlantic Rainforest, with five new species and new combinations (Coleoptera: Lampyridae: Lampyrinae), Arthropod Systematics & amp; Phylogeny 79, pp. 115-150 : 115

Costalampys pauper (Olivier, 1899) comb. nov. Figs 19A-M , 22

Cladodes pauper Olivier, 1899:90 (desc.); Blackwelder 1945:352 (cat.); McDermott 1966:82 (cat.).

Diagnostic description.

Overall dark brown to black, except abdominal terga and sterna (Fig. 19B ), which are dark brown. Pronotal disc (Fig. 19F ) entirely black, pronotal expansions dark brown to black, often with anterior corners slightly lighter. Elytron (Fig. 19A ) dark brown to black, with a pale-yellow longitudinal stripe about 4/5 × as long as elytra. Legs dark brown to black. Sternum VIII (Fig. 19G ) entirely dark brown, without lateral vitreous spots. Pygidium (Fig. 19H ) entirely dark brown.

Pronotum (Fig. 19F ) with sides rounded, divergent posteriorly. Sternum VI without lanterns. Male. Total length = 8.9-11.3 mm (aver. 10.1 mm); Pronotal length = 2.3-2.7 mm (aver. 2.5 mm); Pronotal width = 1.8-3.3 mm (aver. 2.55 mm); Elytral length = 7.3-8.8 mm (aver. 8.05 mm); Elytral width = 1.8-2.2 mm (aver. 2.0 mm). Antennomere III (Fig. 19E ) with lamella 3 × longer than core antennomere. Sternum VIII with posterior margin mucronate. Pygidium (Fig. 19H ) with sides rounded, posterior corners barely visible, posterior margin rounded to almost straight. Syntergite (Fig. 19I,J ) boomerang-shaped (with anterior margin strongly curved). Phallus (Fig. 19K-M ) with dorsal plate curved dorsally in lateral view. Paramere apex almost straight, ventral projection (lateral view) moderately developed, almost right-angled. Paramere apex curved ventrally, ventral projection (lateral view) moderately developed, rounded to almost right-angled. Female (Fig. 19C, D ). Total length = 11.0-11.3 mm (aver. 11.15 mm); Pronotal length = 1.7-1.8 mm (aver. 1.75 mm); Pronotal width = 2.7-2.8 mm (aver. 2.75 mm); Elytral length = 7.2-8.7 mm (aver. 7.95 mm); Elytral width = 2.0-2.5 mm (aver. 2.25 mm). Antennomeres (Fig. 19C, D ) III-X with apical corners almost right-angled, not projected and pointed.

Remarks.

Olivier (1899) described Cladodes pauper from Brazil - the syntype we studied is from Teresópolis, Rio de Janeiro, Brazil. In addition to Teresópolis, in the Serra dos Órgãos mountain range, we found previously unreported populations at the Serra da Mantiqueira and Maciço da Pedra Branca mountain ranges, in the states of Rio de Janeiro and Minas Gerais. Our study provides detailed geographic information for the first time, and expands considerably the known range of the species. After our phylogenetic analysis (see section 3.2), we transfer Cladodes pauper to Costalampys gen. nov., therefore Costalampys pauper (Olivier, 1899). Olivier (1899) didn’t provide an etymology for Costalampys pauper , but we assume it was based on the Latin word for “poor”. Because Olivier (1899) originally placed it in Cladodes Solier, 1849, Cladodes pauper would be relatively smaller than the remaining species in this genus, therefore “poor”.

Costalampys pauper (Olivier, 1899) is unique among Costalampys spp. by the pronotum entirely dark brown to black and sternum VI without lantern, in both sexes. C. pauper is also unique in being restricted to relatively cooler climates, either at sites of relatively higher elevation (>1200m) during the Austral Spring season, or at lower elevations (~600m), during Austral Winter. These observations suggest that this species might be adapted to climates substantially cooler than its congenerics, which deserves further scrutiny.

Types.

Syntype: BRAZIL: 1 male ( MNHN, col. E. Olivier). Label is written “Brésil intér.”, which we interpret as “interior”, "country side" of BRAZIL.

Material examined.

BRAZIL: Minas Gerais: 1♂ , Itamonte, Travessia de Itatiaia para Maringá, 25-29.XI.2010, Carvalho col. (DZRJ); 1♂ , Itamonte , gramado [on grass], 19-21.XI.2009, active search [afternoon], L. Silveira col. (DZRJ) ; Rio de Janeiro: 1♂, 1♀ , Itatiaia, P. N. Itatiaia , P5 (22°25 ’01,0” S, 44°38 ’32,9” W, 1846 m), Malaise trap, XII.2013, R. Monteiro col. (DZRJ); 1♂ , P. N. Itatiaia, Travessia Rui Braga , 2200 m, 21.XI.2013, L. Silveira col. (DZRJ); 1♂ , P.N. Itatiaia , P7 (22°23 ’38,9” S, 44°39 ’59,7” W, 2255 m), Malaise trap, 21.XI.2013, R. Monteiro col. (DZRJ); 2♂, 3♀ , P.N. Itatiaia , P5 (22°25 ’01,0” S, 44°38 ’32,9” W, 1846 m), Malaise trap, R. Monteiro col (DZRJ); 1♂ , Rio de Janeiro, P.E. Pedra Branca, Taquara, Trilha da Padaria (~ 400m), Crepúsculo, PiT-LED, 07.VII.2018, A. L. D. Ferreira (DZRJ); 1♂, 1♀ , Teresópolis, P.N. Serra dos Órgãos, Trilha do Sino , 1650-1900 m, 14-15.XI.2015, L. Silveira col. (DZRJ) .

Figures

Figure 19. Costalampys pauper (Olivier) comb. nov. A, Male habitus, dorsal view; B, Male habitus, ventral view; C, Female habitus, dorsal view; D, Female habitus, ventral view; E, Male antenna, lateral view; F, Male pronotum, dorsal view; G, Sternum IX, ventral view; H, Pygidium, dorsal view; I, Syntergite, dorsal view; J, Sternum IX, Ventral view; K, Aedeagus, dorsal view; L, Aedeagus, lateral view; M, Aedeagus, ventral view. Scale bar: 2 mm (A-D); Scale bar: 1.0 mm (E); Scale bar: 0.5 mm (G-K).

Figure 22. Distribution map of Costalampys gen. nov. species.