Neoconocephalus corumbaensis Piza, 1969

Neoconocephalus corumbaensis Piza, 1969 View in CoL

( Figs. 4 View FIGURE 4 , 17 View FIGURE 17 )

Neoconocephalus corumbaensis Piza, 1969 View in CoL . Piza Jr. (1969): 117 [Description]; Paschoal & Barros (1977): 241 [Catalog]; Chamorro-Rengifo & Braun (2010): 43 [Catalog].

Type locality. Corumbá , Mato Grosso do Sul, Brazil .

Diagnosis. Head semioval in frontal view ( Fig. 4E View FIGURE 4 ); fastigium of vertex semicircular in frontal view, two times longer than scapus length, base three times wider than scapus width ( Figs. 4C, D, E View FIGURE 4 ); pronotum lateral lobe as long as wide, without evident separation of anterior and lower margins ( Fig. 4C View FIGURE 4 ); tegmen with basal and apical regions equally wide, median region widest.

Redescription. Head: Semioval in frontal view ( Fig. 4E View FIGURE 4 ); fastigium of vertex semicircular in frontal view, two times longer than scapus length, base three times wider than scapus width, tooth projected at basal portion of fastigium ( Figs. 4C, D, E View FIGURE 4 ); fastigium of frons little projected, rounded ( Fig. 4E View FIGURE 4 ). Thorax: Pronotum anterior margin almost straight, posterior margin convex ( Fig. 4A View FIGURE 4 ); lateral lobe as wide as long, anterior margin of lateral lobe slightly rounded, without evident separation from lower margin, margin of humeral sinus rounded, invagination of humeral sinus concave ( Fig. 4C View FIGURE 4 ). Wings: Tegmen with basal and apical region equally wide ( Fig. 4B View FIGURE 4 ). Legs: Foreleg genicular lobe with triangular apex, tympanum with three distinct regions: proximal one circular, median one with a pair of open longitudinal slits, and apical one closed, tibia with five ventral spines of inner margin; midleg genicular lobe triangular with inner side with acuminate apex and outer side with rounded apex, tibia with seven pairs of ventral spines; hindleg with femur ventrally with nine inner spines and six outer spines, genicular lobe little developed, tibia dorsally with approximately 21 inner spines and 24 outer spines, ventrally with 11 pairs of alternating spines. Color : Holotype light brown, allotype light green with to yellow; black on ventral surface of tarsi and frontal area of apex fastigium.

Description of male. Tegmen: Stridulatory area with single elevated transverse region long and narrow with median furrow throughout length ( Fig. 4F View FIGURE 4 ). Cercus : Dorsal lobe with spine measuring half the length of lobe, ventral lobe two times longer than dorsal lobe ( Figs. 4G, H View FIGURE 4 ).

Measurements: Male holotype: BdL 33.8(35.0); FL 1.7; PdL 9.4(9.8); TegL 49.1(50.0); FlegL 8.0; HlegL 28.3(29.5). Male: BdL 26.8; FL 1.7; PdL 8.1; TegL 42.9; FlegL 6.9.

Distribution. Brazil: Mato Grosso do Sul and São Paulo [new record] states.

Taxonomic notes. This species is most similar with N. maculosus ( Redtenbacher, 1891) and N. spiza Walker & Greenfield, 1983 . However, N. corumbaensis can be distinguished from N. maculosus by the space between fastigium of vertex and fastigium of frons measuring approximately half of scapus length ( Fig. 4C View FIGURE 4 ) (one third of scapus length in N. maculosus ), and from N. spiza by its stridulatory area occupying half the width of tegmen ( Fig. 4F View FIGURE 4 ) (two thirds of tegmen width in N. spiza ).

The male allotype of N. boraceanus is herein considered conspecific to the holotype of N. corumbaensis ( Fig. 4J–R View FIGURE 4 ).

Type material. Neoconocephalus corumbaensis : male holotype “ 21.I.68; Corumbá; M.T; K. Oeshiro ” [ MELQ]. Neoconocephalus boraceanus : male paratype “ Est. Biol. Boraceia ; Salesópolis, SP. 850m; J. Oliveira Santos col.; 10–15.MAR.1963 ” “ Neoconocephalus boraceanus Piza alótipo” [ MELQ] .