Celebesia linduensis Storozhenko, 2020

Storozhenko, Sergey Yu., 2020, A new species of the genus Celebesia Bolívar, 1917 (Orthoptera: Acrididae Catantopinae) from Sulawesi Island with notes on composition of the tribe Mesambriini, Zootaxa 4861 (4), pp. 594-600 : 596-598

Celebesia linduensis Storozhenko , sp. nov.

Figs 1–10

Type material. Holotype – male, Indonesia: Sulawesi Island , province Tengah (=province Central Sulawesi), Lore Lindu National Park , 45 km SSE of Palu City, env. of village Tomado on Lindu Lake, 1000 m, 13-17 February 2011, coll. A.V. Gorochov ( ZISP).

Description. Male. Body rugose, medium-sized for the genus ( Fig. 1 ). Head rugose, distinctly shorter than pronotum ( Fig. 2 ). Frons, genae and vertex rugosely punctured. Face in profile strongly reclinate. Frontal ridge distinct to median ocellus, narrowed between antennal bases ( Fig. 4 ). Vertex between eyes 1.5 times broader than maximal width of frontal ridge. Fastigium of vertex short, weakly sulcate; lateral margins bordered by low carinulae reaching apical margin of the compound eyes; foveolae narrowly triangular. Eyes large, oval; vertical diameter of eye 2.9 times as long as subocular furrow. Antennae 22-segmented, reaching the base of hind femora; mid segments of antennae 2.4–2.6 times as long as width. Pronotum rugose, long, crossed by two transverse furrows (mid furrow vestigial); prozona 1.5 times as long as metazona; anterior margin of prozona not excised near median carina; posterior margin of metazona angularly rounded; lateral carinae weak and traced in metazona only ( Fig. 2 ); median carina distinct, lateral view low, straight, slightly cut by two furrows ( Fig. 1 ). Prosternal spine straight, conical, with pointed apex. Mesosternal lobes subsquare, 1.2 times as wide as long; mesosternal interspace square; metasternal lobes separated ( Fig. 3 ). Tegmina touching each other in a resting position, reaching the top of hind femur; apex of tegmen rounded; radial area with regular veinlets. Hind wings subcycloid, reaching apex of tegmina in rest position. Hind femora stout, 3.1 times as long as their maximal width; dorso-median carina serrated, terminating in a small tooth; ventral genicular lobes obtuse ( Fig. 1 ). Hind tibiae with seven outer and eight inner dorsal spines; outer apical dorsal spine absent. Hind tarsi short, not longer than the half of hind tibiae; third segment (without claws) as long as two others together; arolium large, almost reaching apex of claws. Tympanum large, oval. 10th tergite with long pointed furculae on posterior margin; supra-anal plate triangular, 1.3 times as long as its width near base, with narrowly rounded apex; its surface slightly concave ( Fig. 7 ). Cerci overreaching the supra-anal plate, flattened laterally, slightly attenuated towards the apex, seen in profile arcuately bent downwards, apex broadly rounded ( Fig. 6 ). Subgenital plate short, curved up, apex obtuse.

Description of male genitalia. Epiphallus bridge-shaped; bridge broad and completely divided; ancorae relatively short, weakly curved; anterior and posterior projections broadly rounded; posterior projections weak, almost straight; lophi of epiphallus great, extending, with enlarged outer and distinct inner lophi; oval sclerites elongated ( Fig. 8 ). Ectophallic membrane sclerotised, V-shaped; cingulum sclerotised, consisting of broad apodemes, zygoma, and rami; zygoma broadly rounded apically, covering the arch of cingulum ( Fig. 9 ). Valves of cingulum divided, apically narrow with pointed apex ( Fig. 10 ). Apical valves of penis with pointed apex, almost as long as cingular valves; basal and apical penis valves connected by a strongly curved, unbroken flexure ( Fig. 10 ).

Body (after alcohol preservation). Brown with black ( Fig. 1 ). Dorsal side of head brown with wide black stripe on occiput and small blackish spot in apical part of vertex ( Fig. 2 ); genae brown; postocular stripe black; face brown with black median stripe below the base of antennae; mandibles blackish brown ( Fig. 4 ). Antennae light brown; scapus with black spot near the base ( Fig. 4 ). Disc of pronotum black with wide yellow stripes along lateral margins ( Fig. 2 ); upper part of lateral lobes black, lower part brown ( Fig. 1 ). Tegmina black with light stripes in costal and cubital areas; hind wings blackish. Fore and mid legs light brown. Hind femur brown with black stripes and spots; dorsal genicular lobes black, ventral genicular lobes black with light brown apex ( Fig. 1 ). Hind tibia light brown with black base and blackish ring situated in basal third of tibia; dorsal spines with black apex ( Fig. 1 ). Abdomen dorsally light brown with few small dark marks; 9th and10th tergites blackish; anal plate brown; cerci light brown with blackish base ( Fig. 7 ). Ventrally 1–8th sternites light brown; 9th sternite with black median stripe; subgenital plate black ( Fig. 5 ).

Female. Unknown.

Measurements (mm). Length of male body 19.7; antenna 13.5; pronotum 5.2; tegmen 15.5; hind femur 11.6; hind tibia 9.3; cercus 1.7.

Comparison. New species is similar to C. acuticerca and C. heinrichi in the color of pronotum and sternal plate, but in the both above-mentioned species the hind tibiae dark greenish or greenish blue without rings. New species is also similar to C. ferruginata in the color of hind tibia, but differs from latter in the color of pronotum and sternal plate (in C. ferruginata , the disc of pronotum black or blackish brown with four yellow spots; lateral lobe black with a yellow spot in the lower posterior angle; sternal plate totally black with a yellow median spot on meso- and metasternum), while in new species the disc of pronotum black with wide yellow stripes along lateral margins, upper part of lateral lobe of the pronotum black but lower part brown, and sternal plate almost complete light brown.

Distribution. Indonesia: Sulawesi Island (central part of Central Sulawesi province).

Figures

FIGURES 1–6. Celebesia linduensis sp. nov., male (holotype). 1. Body, lateral view. 2. Head and pronotum, dorsal view. 3. Head and sternal plate, ventral view. 4. Head, frontal view. 5. Apex of abdomen, ventral view. 6. The same, lateral view.

FIGURES 7–10. Celebesia linduensis sp. nov., male (holotype). 7. Apex of abdomen, dorsal view. 8. Epiphallus, dorsal view. 9. Phallic complex (epiphallus removed), dorsal view. 10. The same, lateral view.