Angara flavolineata Fianco, 2025

Fianco, Marcos & Melo, Gabriel A. R., 2025, Molecular systematics and species revision of a Neotropical genus of flightless phaneropterine katydids (Orthoptera: Tettigoniidae: Phaneropterinae), Zoological Journal of the Linnean Society 204 (2) : -

Angara flavolineata Fianco sp. nov.

( Figs 6, 10C, 14A, B)

l s i d: z o o b a n k.o r g: a c t: 7 5 5 A 8 6 4 7 - 9 4 0 9 -4 F 5 A - 9 6 0 B - DC21F6AC16D9

Diagnosis: Angara flavolineata can be distinguished readily from its known congeners by the combination of the following characters: body dark brown; anterior margin of pronotum straight; coloured band with only one colour; a medial yellowish line from head to apex of abdomen; styliform processes of male subgenital plate divergent.

Description: Holotype male ( Fig. 6): Overall aspect ( Figs 6A, 14A): medium-sized katydids, general colour dark brown, with a lateral coloured strip from head to abdominal tip. Head ( Fig. 6B–D): frons slightly rugose, yellowish, with crimson stains; fastigium of frons triangular, higher than wide, ocelli present, apex reddish. Clypeus and labrum yellowish, with crimson stains. Maxillary and mandibular palps yellowish, but apex of last articles green. Gena brownish, darker near occiput. Scape as long as 0.5× pedicel; proximal area of scape yellowish at base, but apex brownish at anterior margin, and inner, lateral, and posterior edges purplish; flagellum ≥ 4× longer than body, first four flagellomeres dark brown laterally, light pink medially, whitish after fourth article to the middle, thereafter greyish. Fastigium of vertex with a negligible elevation at apex, no lateral ocelli, a medial yellow line from fastigium of frons towards pronotum; a whitish line from eye towards pronotum. Thorax ( Fig. 6C–E): pronotal disc ( Fig. 6C) glabrous, dark brown with scattered black punctations; anterior margin straight; posterior margin slightly concave, not elevated; a medial yellow line towards abdomen.No sulcus on lateral carinae ( Fig. 6C, D), a white band throughout its extent. Lateral lobes ( Fig. 6D) long, 1.5× longer than wide, anterior and inferior margin sinuous, posterior margin slightly diagonalized and convex, inferior margin yellow. Tegmina ( Fig. 6E) truncated, stridulatory vein greenish, costal margin yellowish, veins on anal area greenish, veins on medial and radial area reddish, all cells blackish but turning to greenish at apex, which is pointed. Epimeron II 1.2× wider than episternum II; epimeron III as wide as episternum III; episternum II yellowish, episternum II light brown, epimeron II and III brown. Legs ( Fig. 6A): coxa II with reddish stains, coxae I and III yellowish; all legs dark brown, but femur II covered with reddish stains at base, and femur III covered with yellow stains at base; three first tarsomeres black on ventral margin and brown dorsally, last tarsomere brownish; femur III ~5.6× longer than pronotum. Abdomen ( Fig. 6A, F, G): tergites with several dark brown punctuations; traversed by a white band laterally and a medial slender yellow band. Tergite X ( Fig. 6F) with a deep depression on medial region. Subgenital plate ( Fig. 6G) trapezoidal, as long as wide; styliform processes much longer than wide, divergent; median keel present. Cerci ( Fig. 6F, G) slightly curved, short and thick; thickness decreasing gradually towards the apical curvature to the medial region, where it decreases abruptly; with a black apical tooth at apex.

Female ( Figs 10C, 14B): Larger than males. Fastigium of frons globose; one light yellow strip from eye towards the pronotum; other morphological details of head as in males. Tegmina trapezoidal, covering first abdominal tergites; veins well evident; vein M branching immediately after leaving CuA; other structures of thorax as in males. Ovipositor 3.2× longer than the pronotal disc; slightly curved up and acuminate; serrulations beginning on the distal seventh of dorsal valves and distal quarter of ventral valves.

Measurements (in millimetres): Holotype: BL, 19.1; TegL, 3.4; HW, 2.5; HH, 3.7; PrL, 3.8; PLL, 3.2; PrH, 1.1; FLiii, 21.5; TLiii, 25.2; SPL, 2.1; CL, 1.8. Male paratypes: BL, 19.1–19.7; TegL, 3.4–3.9; HW, 2.5–2.9; HH, 3.7–4.1; PrL, 3.7–4.2; PLL, 3.3–3.8; PrH, 1–1.3; FLiii, 21.3–22; TLiii, 25–25.7; SPL, 2–2.7; CL, 1.5–1.9. Female paratypes: BL, 20.7–21.7; TegL, 2.2–2.7; HW, 2.6–2.8; HH, 3.9–4.2; PrL, 4.1–4.2; PLL, 3.7–4; PrH, 1.6–1.8; FLiii, 21.9–22.5; TLiii, 25.7–26.3; SPL, 1.2–1.4; OL, 13.2–14.3.

Etymology: The specific name from Latin ‘ flavus = yellow’ and ‘ lineatus = lined’, referring to the medial yellow line from head to abdomen apex.

Type material: Holotype male ‘ Brasil, RS, Derrubadas , \ Pq. Est. do Turvo \ 27.2287°S, 53.8509°W \ 420m, 12-16.XII.2022, \ M. Fianco & G. Melo’ and ‘MFM 144 ’. Paratypes: one male and two females, same data as holotype ; one female, ‘ Brasil, RS, Derrubadas , \ Pq. Est. do Turvo \ 27.1391°S, 53.8807°W \ 190m, 12-16.XII.2022, \ M. Fianco & G. Melo’ and ‘MFM 146’; and one male and one female ‘ Brasil, RS, Derrubadas , \ Pq. Est. do Turvo \ 27.1675°S, 53.8542°W \ 300m, 12-16.XII.2022, \ M. Fianco & G. Melo’ .