Arboraptor viridis Mendes, Oliveira, Chamorro-Rengifo & Rafael

Mendes, Diego Matheus De Mello, Oliveira, Jomara Cavalcante De, Chamorro-Rengifo, Juliana & Rafael, José Albertino, 2018, Two new genera of predatory katydids (Orthoptera: Tettigoniidae: Meconematinae) from the Amazon rainforest, Zootaxa 4438 (2), pp. 261-282: 266-271

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Arboraptor viridis Mendes, Oliveira, Chamorro-Rengifo & Rafael

sp. nov.

Arboraptor viridis Mendes, Oliveira, Chamorro-Rengifo & Rafael  sp. nov.

Figures 1–9View FIGURE 1View FIGURE 2View FIGURE 3View FIGURE 4View FIGURE 5View FIGURE 6View FIGURE 7View FIGURE 8View FIGURE 9 and 19 View Figure Orthoptera

Etymology. From Latin viridis  = green. Refers to the greenish general body coloration.

Diagnosis. Hind wings with apex of not extending beyond tergite X ( Fig. 2A View Figure ). Tergite X with posterior margin bilobated, with the inner margins of the lobes straight in dorsal view ( Fig. 2I View Figure ). Cerci short, broadened and with three projections in the inner portion ( Fig. 2I View Figure ). Styli longer than cerci, median part of styles touching each other ( Fig. 2I –K View Figure ).

Type material. Holotype ♂: BRASIL, Amazonas, Tefé, Estrada da EMADE, km 20, Comunidade Bom Jesus, 06°07'29"S / 68°02'41"W, 29-30.x.2016, coleta manual, D.M.M. Mendes & J.C. Oliveira leg. ( INPAAbout INPA); Paratypes: same data of holotype (2♂ e 1♀ — INPAAbout INPA); idem, 08.vii.2017 (1♂ e 1♀ — INPAAbout INPA).

Geographical records. Brazil: Amazonas ( Fig. 19 View Figure ). 

Description. Holotype Male.

Head. Compound eyes rounded. Fastigium of vertex straight without projections ( Fig. 2B View Figure ). Frons, clypeus and labrum smooth. Frons with medium width 1.5X longer than clypeus height ( Fig. 2B View Figure ). Distal half of the left mandible brownish ( Fig. 2B View Figure ).

Thorax. Pronotum dorsally straight without carinae ( Fig. 2 View Figure C-D). Lateral lobes in ventral antero-lateral margin concave and posteriorly straight in lateral view ( Fig. 2D View Figure ). Posterior portion of pronotum slightly curved upward in lateral view ( Fig. 2D View Figure ). Mesobasisternum trapezoidal ( Fig. 2F View Figure ). Metabasisternum hexagonal, with bilobed posterior margin and with rounded lobes ( Fig. 2F View Figure ).

Wings. Tegmina short, with apex not extending beyond the cerci and styli ( Fig. 2A and 2E View Figure ). Tegmina five times longer than broad in the median portion; costal margin with base initially curved forming a line descending to the apex; apex rounded ( Fig. 3 View Figure ); anal margin expanded. Right stridulatory vein with 41 teeth, curved at the proximal portion, becoming straight at the medial portion until the beginning of the distal region, where it curves sharply again at the apex ( Fig. 4B View Figure ). Total length of the right stridulatory file 0.7 mm, larger width of the vein 0.2 mm. Basal teeth smaller, increasing in size and width to the medial portion of the file ( Fig. 4B View Figure ). Teeth of the median portion of the file larger and closer to each other ( Fig. 4B View Figure ). Absence of teeth from the beginning of the apical region to the end of the file ( Fig. 4B View Figure ). Left stridulatory file curved at the basal portion, median portion fairly curved to the distal portion, becoming curved to the apex ( Fig. 4A View Figure ). Total length of the left file 0.1 mm, larger width of the vein 1.2 mm and with 62 teeth. The basal and apical teeth progressively smaller in relation to the teeth in the median portion ( Fig. 4A View Figure ).

Legs. Fore tibia with open tympanum; tympanic region about 4 times shorter than the fore tibia ( Fig. 2G View Figure ); internal face with five antero-ventral spines slightly curved apically ( Fig. 2G View Figure ). Mid femur clavate, without spines

( Fig. 2G View Figure ). Mid tibia with two ventral spines placed in the medial portion ( Fig. 2G View Figure ). All legs covered with small black bristles ( Figs. 2A, 2G, 2H View Figure ).

Abdomen. Posterior margin of tergite X fairly convex, with two small lateral lobes ( Fig. 2I View Figure ). Cerci short, broad, covered with numerous bristles, located mainly on the outer margin, with three projections on its inner margins, one near the base, almost rectangular ( Fig. 2I –K View Figure ) and two more apical in position, the subapical larger, rounded with a small black spine and the apical projection brownish smaller slightly bilobated ( Fig. 2I View Figure ). Subgenital plate anteriorly concave, laterally narrowing towards the apex and posteriorly convex ( Fig. 2J View Figure ). Styli connected posterolaterally to subgenital plate, with space between them equal to the width of one style ( Fig. 2I –K View Figure ). Styli long, slender, flattened dorsoventrally and somewhat parallel-sided, touching each other only in the median portions ( Fig. 2I –K View Figure ). Apex of cerci rounded. Subgenital plate and styli three times longer than cerci length ( Fig. 2K View Figure ).

Phallus: Ejaculatory vesicles suboval ( Fig. 5A–D View Figure ). Upper folds of ventral lobe asymmetrical, with the posterior margin connecting to the median region of the lower folds ( Fig. 5A–B View Figure ). Lower folds triangular, posteriorly rounded, with numerous small rounded nodules ( Fig. 5A–B View Figure ). Titillator and titillator sclerite forming two c-shaped opposing pieces, slightly overlapping in the median portion and covered by numerous triangular projections, presenting the aspect of a grater ( Fig. 5A–B View Figure ). Triangular projections of the titillator with dark brown apex ( Fig. 5A–B View Figure ). Sclerites of apodemes elongate, narrow and anteriorly curved ( Fig. 5A–B View Figure ); dorsal lobes slightly curved ( Fig. 5A–D View Figure ); dorsal folds short, asymmetrical and bilobate ( Fig. 5C–D View Figure ).

Coloration (based on photos of live specimens). Body light green alternating with dark green areas ( Fig. 7A View Figure ). Antennae brown with black bands at apex. Eyes mainly yolk yellow, anteriorly light green and posteriorly dark yellow. Pronotum mainly light green, with posterior portion of pronotal disk brownish. Tegmina green, dorsally yellowish, the stridulatory region and tegminal margins brown. Femora light green with apex brown. Fore and mid tibiae with green medium portion, being the base and apex brown. Hind tibiae and tarsi brownish. Abdomen, cerci and subgenital plate light green.

Female. Similar to male ( Fig. 6A–K View Figure ), except for the following features:

Head. Head in frontal view smaller than in male, distance between genae about 2 times more than distance between eyes ( Fig. 6B View Figure ). Symmetrical jaws ( Fig. 6E View Figure ).

Wings. Basal region of tegmina with a median black spot at the anal margin ( Fig. 6E View Figure ). No stridulatory organ.

Abdomen. Cerci with numerous bristles ( Fig. 6I View Figure ). Cerci conical slightly curved inwards with acuminate apex ( Fig. 6I View Figure ). Subgenital plate trapezoidal, with the posterior margin convex and laterally rounded. ( Fig. 6J View Figure ). Ovipositor curved with acuminate apex and with small teeth on the apical portion of the ventral valve ( Fig. 6K View Figure ). Total length of the ovipositor 5X longer than the subgenital plate.

Coloration. Posterior portion of the pronotal disk dorsally dark brown and posteriorly with a black elliptical spot that connects to a similar spot on the tegmen base ( Fig. 7B View Figure ).

Nymph. Very similar to adults, with differences only in the coloration and in the terminalia morphology ( Fig. 8 View Figure ). Body mainly light green with small asymmetrical dark green areas. Eyes anteriorly and posteriorly light green, with the median portion yellowish green. Apex of hind femora and tarsi brownish. Wings pads light green. First and second abdominal segments dorsally with a whitish yellow spot.

Measurements (mm). Holotype: TL: 12; TegL: 7,4; TegH: 1,7; WF: 1,8; PL: 3,9; FF: 4,4; LF: 5,4; MF: 4,8; MT: 5,8; HF: 11; HT: 12,1; Lsp: 3,3; LC: 1,4. Paratypes: Male (n = 6): TL: 13,9–11; TegL: 8,3–8,2; TegH: 2,1– 1,8; WF: 2,1–1,9; PL: 4–3,9; FF: 4,5–4,2; LF: 5,8–5,1; MF: 4,8–4,6; MT: 5,8–5,2; HF: 11,2–10,6; HT: 11,7–11,6; Lsp: 3,7–3,4; LC: 1,6–1,5. Females (n = 3): TL: 15–12,5; TegL: 8,8–8,3; TegH: 1,8–1,5; WF: 1,8–1,5; PL: 3,5–3,4; FF: 4,2–4,1; LF: 5,2–5,1; MF: 4,6–4,4; MT: 5,7–5,3; HF: 11,3; HT: 12–11,6; Lsp: 1,3–1; LC: 2,7–2,1; OL: 5,8–5,4.


Instituto Nacional de Pesquisas da Amazonia