Anthracites sebu Tan, Bahoy & Sabang 2024, sp. nov.
Creators: name: Sabang, Aira Mae M.
name: Bahoy, Daphne Cayle M.
name: Grumo, Kim C.
name: Gono, Alfredo Iii A.
name: Salvador, Jewel Anne G.
name: Rivera, Rodrin R.
name: Nuñeza, Olga Macas
name: Robillard, Tony
name: Tan, Ming Kai
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Orthoptera
Tettigoniidae
Anthracites
Anthracites sebu

description: Anthracites sebu Tan, Bahoy & Sabang, sp. nov.
(Figs 1D, 2D, 11–13)
Material examined. Holotype: PHILIPPINES, Mindanao, South Cotabato, Lake Sebu: • ♂; Barangay Lamlakak, Allah Valley Protected Landscape, foot of the northern slope of Mount Busa; N6.182056, E124.681361, 1064± 4 m. a.s.l.; 30 January 2024, 16h09; open area inside secondary forest, 15 m away from a stream; found on the leaf of a shrub [Catharanthus sp.]; coll. D.C. Bahoy & A.M. Sabang; AI5.6 (PNM).
Paratypes (1♂, 1♀): • 1♀; same locality as holotype; N6.182333, E124.681083, 1077± 4 m.a.s.l; 30 January 2024, 16h18; found inside a coiled dead leaf of abaca plant (Musa textilis); coll. D.C. Bahoy & A.M. Sabang; LS15 (PNM) • 1♂; same locality as holotype; N6.185531, E124.684064, 1052± 3 m.a.s.l; 2 February 2024, 20h08; found on open area 1 km from a small agricultural site; found on the leaf of shrub; coll. D.C. Bahoy & A.M. Sabang; L57A (MNHN-EO1356).
Etymology. This species is named after its type locality, in Lake Sebu; noun in apposition.
Diagnosis. This species is most similar to Anthracites pyramidalis by the general colouration, face with a broad black band from fastigium verticis to base of clypeus, widening ventrad and its titillators X-shaped; but differs by the pronotum unicolourous orange without black spots at hind margin, male tegmen also without dark cells, male cercus with a stout distal internal process not surpassing apex of cercus, constricted just before apex and with sharp tooth at tip (instead of two processes, one of which long and falcate), and the titillators having lateral arms distinctly having a stout hook (instead of a hammer-headed apex).
The species is also similar to Anthracites romblon by its male cercus with a stout distal internal process constricted just before apex and with a sharp tooth at tip, but differs by the process smaller, slenderer and not surpassing apex of cercus. It also differs by the absence of dark patterns on pronotum and the tergites having lateral black bands (instead of median ones).
The female also differs from Anthracites pyramidalis by the subgenital plate transverse and at the posterior end broadly bilobed and its lateral margins not upcurved.
Description. Male habitus as shown in Figs 1D, 2D. Morphology typical of genus (Figs 11A–C), similar to Anthracites alatus sp. nov. Thoracic spiracle large and oval, nearly completely covered by paranota (Fig. 11B). Tegmen micropterous, mirror area fully covered by pronotal disc, reaching base of fourth abdominal tergite, with apex roundly truncated (Fig. 11A). Femora with the following number of spines on ventral margins: anterior femur 7 external, 6 internal; middle femur 6–7 external, 2–3 internal; posterior femur 10–11 external, 2–3 internal. Knee lobes of anterior and middle femora obtuse externally and spinose internally; knee of posterior femur bispinose on both sides, longer than those of anterior and middle femora.
Abdomen. Tenth abdominal tergite transverse, distinctly wider than long, narrows towards apex; at posterior margin truncated, faintly bulbous laterally and emarginated in middle, without setae (Fig. 11D); lateral lobe near posterior end faintly folded (Fig. 11E). Epiproct broadly tongue shaped, at base with middle slightly depressed forming a groove (Fig. 11E). Cercus short and stout, dorso-laterally compressed; distal end triangular subacute; with stout distal internal process triangular, pointing inward, constricted just before apex and with sharp tooth at tip (Figs 11D, 11E). Subgenital plate about as long as wide; with anterior margin concave; apical end angularly emarginated with dense setae, posterior margin at middle produced into long cylindrical process with acute apex, process reaching middle of emargination (Fig. 11F); margin around bases of styli on dorsal side swollen and with acute internal tooth (Fig. 11E). Styli stout and long with apex rounded (Fig. 11F). Titillators (Fig. 12) separate, X-shaped and wing-like; lateral arm pointing ventrally; lateral arm slender forming the ‘skeleton of the wing’, apical end forming strongly sclerotized and stout hook with subacute apex; proximal of lateral arm with flattened semi-sclerotized hyalinous plate forming the ‘wing’; base with proximal end tongue shaped having rounded apex; provided with two pairs of lateral sclerites, small, slender and slightly curved.
Female (Figs 13A, 13B). Tenth abdominal tergite short and transverse, posterior end angularly emarginated in middle; forming two broadly rounded lobes; with longitudinal median groove (Fig. 13C). Epiproct transverse, almost as wide as long, broadly tongue shaped (Fig. 13C). Cercus with apex pointing (Fig. 13C). Subgenital plate transverse and at posterior end broadly bilobed (Fig. 13D). Ovipositor long sabre-shaped; margins smooth (Fig. 13E).
Colouration. Body orange (Figs 1D, 2D). Face with broad black band from fastigium verticis to base of clypeus, widening ventrad and including median ocellus pale (Fig. 11C). Scapus ventrally and on inner side black, dorsally and on outer side pale; antennae orange (Figs 11A–C). Maxillary palpi with segments cream coloured (Fig. 11B); mandible black; clypeus basal third black, otherwise yellow orange; labrum yellow orange (Fig. 11C). Pronotum completely orange yellow without any black patterns; margins of pronotal lateral lobe slightly darker (Figs 11A, 11B). Tegmen with lateral field having veins cream coloured and some cells dark (Fig. 11B); dorsal field with veins and cells unicolourous orange (Fig. 11A). Anterior and middle femora unicolourous orange; anterior tibia orange yellow with two black spots, smaller one basal of tympanum and more elongated one distal of tympanum, ventral spines black; middle tibiae orange yellow (Fig. 11B). Posterior femur orange, knees faintly darker. Posterior tibia pale yellow with spines brown. Tarsus cream coloured with distal margin black. Abdominal tergite pale yellow, with posterior margin having lateral bands that become narrower towards apical segments (Fig. 11D). Male tenth abdominal tergite, epiproct and cercus generally orange (Fig. 11D). Sternites and subgenital plate yellow (Fig. 11F). Ovipositor with valves basally cream coloured, otherwise red brown, at apex darkest.
Measurements. See Table 1.
Distribution. South Cotabato: Lake Sebu.
description: Published as part of Sabang, Aira Mae M., Bahoy, Daphne Cayle M., Grumo, Kim C., Gono, Alfredo Iii A., Salvador, Jewel Anne G., Rivera, Rodrin R., Nuñeza, Olga Macas, Robillard, Tony & Tan, Ming Kai, 2024, A taxonomic review on the katydids of the genus Anthracites Redtenbacher, 1891 (Tettigoniidae: Conocephalinae: Agraeciini) from Mindanao, Philippines, pp. 313-336 in Zootaxa 5507 (2) on pages 327-331, DOI: 10.11646/zootaxa.5507.2.5, http://zenodo.org/record/13757697