Anaulacomera (Oecella) spirala, Fianco, 2021

Fianco, Marcos, 2021, Nine new species of the Anaulacomerina subtribe of katydids (Orthoptera Tettigoniidae: Phaneropterinae: Phaneropterini) from Brazil, Zootaxa 4952 (1), pp. 33-54 : 47

Anaulacomera (Oecella) spirala sp. n.

Figures 1B , 9 , 12C

Diagnosis: A. (O.) spirala sp. n. can be distinguished from its closely congeners by the combination of the following characters: Cercus thick, twice as long as subgenital plate; apex of ventral process of the twisted over itself twice; epiproct thick, with elevated margins, and with bifid apex; and carinae of subgenital plate parallel.

Etymology: The specific name derived from Latin (spiralis = spiral), refers to the form of ventral process of male cerci, which is more spiralled than the other species of the group.

Description: Holotype male ( Fig. 9 , 12C ): Small, yellowish, probably green in life ( Fig. 9A ). Head ( Fig. 9B, C ): fastigium of the frons long and triangular, apex pointed, with an ocellus on middle; antennal sockets dilatated in the curvature near beginning of fastigium of the frons; fastigium of the vertex conical, dilatated at apex, strangulated on middle, with a sulcus on middle that not exceeds the strangulated region; lateral region of fastigium crimson, extending to eye and going towards pronotum. Thorax: Pronotum plain colour, except for dorsal margin of humeral sinus that is reddish. Pronotal disc ( Fig. 9C ) with posterior margin convex; anterior margin concave; furcal sulci oblong; enlarging from anterior to posterior margin. Lateral lobes ( Fig. 9D ) smaller than pronotal disc, longer than wide; anterior margin with a depression on middle, posterior margin convex and semilunar; humeral sinus presenting an angle of ca. 80º. Tegmina ( Fig. 9A , 12C ) shorter than hindwings; anal and costal margins parallel; Sc without bifurcations; R without bifurcations; M long, following R in all extension; MA with one bifurcation; MP with one bifurcation; CuA almost straight, without bifurcations; stridulatory area crimson ( Fig. 9F, G ). Mesobasisternum ( Fig. 9E ) elevated, with anterior margin almost concave; lateral lobes small, almost triangular, with rhomboid apex, without overlapping in the posterior margin. Metabasisternum ( Fig. 9E ) triangular and elevated, with a straight anterior margin; lateral lobes demilune shaped. Abdomen: Tergite X large, fused to epiproct, with a medial projection that is bifid, the tips curved downwards ( Fig. 9H, I ). Cercus ( Fig. 9H, I ) long; with one bifurcation; the ventral a little longer than half of the dorsal one, apex in a spiral; the dorsal long and moderately curved to the medial region. Subgenital plate ( Fig. 9H, I ) wider than long; median keel absent; with a lateral keel goes from basal region to the apex, reaching the almost absent posterior processes. Genitalia ( Fig. 8J, K ): Completely membranous, phallus symmetrical, rounded; ejaculatory vesicles large, reniform; ventral lobe as large as dorsal lobe; lower fold of ventral lobe quite large, long and pronounced.

Type Material: Holotype male, ‘ DPTO ZOOL \ UF – PARANÁ \\ Morretes – PR Brasil \ ( IAPAR) \ 11.III.1985 \ C.I.I.F. (Luminosa)’, ‘ DZUP 366798 ’.

Measurements (mm): Holotype: BL: 10.5; TegL: 20.5; HW: 1.8; PrL: 2.4; PrH: 2.2; FLiii: 19; SPL: 1.8; CL: 4.2; SFL: 0.96; TN: 41.

Remarks: The Anaulacomera (O.) spirala sp. n. clearly belong to the Furcata species group, differentiating from Juanchoi by not having a cerci apex in form of a cup, and from the three ungrouped species of A. ( Oecella ) for bearing a long cercus, with thin bifurcations. The new species is closely related to A. (O.) furcata Brunner von Wattenwyl , A. (O.) harpago Brunner von Wattenwyl , and A. (O.) rusa Rehn , differentiating from these by the cerci twice as long as subgenital plate, instead of three times longer; cerci thicker; apex of the ventral process of the cerci twisted about itself two times, instead of one time as in A. (O.) furcata , one and a half time as in A. (O.) harpago , and half time in A. (O.) rusa ; the carinae of the subgenital plate are parallel, instead of divergent or convergent. Differing from all species of the Furcata group of A. ( Oecella ), the epiproct are not thin or finger like, instead in thick, curved downwards, with lateral margins elevated, and apex bifurcated.

Figures

FIGURE 1. Occurrence map from the new species of Anaulacomerina from Brazil. A: circles: species from southeastern, north and mid-central Brazil; star: species from Parana State, southern Brazil; B: circles: species from Paraná State, São José dos Pinhais and Morretes municipalities.

FIGURE 8. A. (Oecella) mediastina sp. n. A: male habitus; B: head, dorsolateral view; C: head and pronotum, dorsal view; D: pronotum, lateral view; E: meso and metabasisternum, ventral view; F: stridulatory area, dorsal view; G: stridulatory file; H: terminalia, lateral view; I: terminalia, ventral view; J: phallus, ventral view; K: phallus, dorsal view. Scale bars: A = 1 cm; B–F, H–I = 2 mm; G = 1 mm; J–K = 0.5 mm.

FIGURE 9. A. (Oecella) spirala sp. n. A: male habitus; B: head, dorsolateral view; C: head and pronotum, dorsal view; D: pronotum, lateral view; E: meso and metabasisternum, ventral view; F: stridulatory area, dorsal view; G: stridulatory file; H: terminalia, lateral view; I: terminalia, lateral view; J: phallus, ventral view; K: phallus, dorsal view. Scale bars:A = 1 cm; B–F, H–I = 2 mm; G = 1 mm; J–K = 0.5 mm.

FIGURE 12. Left tegmina of Anaulacomera (Oecella) and Separatula species. Analaucomera (O.) marshae sp. n. (A), A. (O.) mediastina sp. n. (B), A. (O.) spirala sp. n. (C), and A. (O.) zebrina sp. n. (D); Separatula araguaiensis sp. n. Veins: black = Sc; green = R; blue = M; red = Cu; yellow = A1.