Falconius longicornis, Deng, Weian, Zheng, Zhemin & Wei, Shizhen, 2009

Deng, Weian, Zheng, Zhemin & Wei, Shizhen, 2009, A review of the genus Falconius Bolivar (Orthoptera: Tetrigoidea: Scelimeninae), Zootaxa 1976, pp. 63-68 : 66-68

Falconius longicornis sp.nov. ( Fig. 13 )

Female. Body moderate-sized or small, thin and long. Head not protruding above pronotum; vertex 1.6 times wider than one eye, anterior margin of vertex straight, not protruding the anterior margin of eye ( Fig.13 a); lateral margins of vertex with sharp teeth produced upwards, exserted above the eyes surface in profile ( Fig.13 c,13d); median carina not conspicuous. in profile, vertex and frontal ridge forming obtuse round shape, distinctly concave before eyes, frontal ridge distinctly protruding archly between antennae; width of longitudinal furrow narrower than width of first segment of antennae. Antenna filiform, extremely long and slender, 14 segments, length of middle segment 17–18 times its width ( Fig.13 e), inserted between the lower margins of eyes ( Fig.13 c,13d). Eyes spherical, protrusive, lateral ocellus located the middle of anterior margin of eye ( Fig.13 c,13d). Anterior margin of pronotum straight, median keel completed; upper margin of pronotum undulated before shoulders straight behind shoulders in profile ( Fig.1 b). Lateral keels of prozona conspicuous, parallel ( Fig.13 a); humeral angle obtuse, with a pair of abbreviated carinae between shoulders and in middle of pronotum ( Fig.13 b); posterior pronotal process extremely long and slender, reaching the top of hind tibia ( Fig.13 a,13b). Posterior angles of lateral lobes of pronotum directed outwards, apical spine sickleshaped, transverse ( Fig.13 a); posterior margin of lateral lobes of pronotum with two concavities. Tegmina long oval, apex rounded. Wings reaching or surpassing apex of hind process of pronotum ( Fig.13 a,13b). Upper and lower margins of fore and middle femora undulated and with two projections ( Fig.13 b), width of midfemur narrower than width of tegmina. Length of hind femur as 3.7 times as width, midkeel of upper and lower side of hind femur dentate, with large teeth before antegenicular denticles ( Fig.13 b); antegenicular and genicular denticles acute. Lateral margins of hind tibiae with tiny teeth on margin; the first segment of hind tarsus longer than the length of second and third segment together ( Fig.13 f); the first and second pulvilli of the first segment of hind tarsus degenerated, the third pulvillus small ( Fig.13 f); the third segment of hind tarsus obviously expanded, thicker than the first segment ( Fig.13 f). Ovipositor narrow and long, length of upper valvulae 4 times its width, upper and lower valvulae with slender saw-like teeth. Length of subgenital plate equal to its width, middle of posterior margin of subgenital plate with a triangular convex ( Fig. 13 g).

Body yellowish brown. Antennae black, between segments of antennae light ( Fig.13 e). Hind wings black. Hind tibia black, with light ring in the base and middle.

Male. Smaller and narrower than female. Subgenital plate short, cone-shaped ( Fig.13 h). The third segment of hind tarsus not expanded. Other structures and coloration same as female.

Measurements. Length of body: ɗ 9–9.5 mm, Ψ 10.5–11 mm; length of pronotum: ɗ 13–13.5 mm, Ψ 15.5–16mm; length of hind femur: ɗ 5–5.5 mm, Ψ 6–6.5 mm.

Type Material. Holotype: female. P.R. CHINA, Guangxi prov., Luocheng (Qingmingshan), 24.9N, 108.9E, 600m alt, 12.vi.2008, collected by Wei-An DENG. Paratypes. Two male and three female, same data as for holotype. Material is deposited in the Institute of Zoology, Shaanxi Normal University, Xi’an, China.

Etymology. The name of the new species is derived from the Latin words longi and cornis indicating antenna extremely long and slender, length of middle segment 17–18 times its width.

Remarks. This species can be easily distinguished from other species of the genus by lateral margins of vertex with sharp teeth produced upwards, exserted above the eyes surface in profile. Falconius longicornis sp.nov. is similar to F. annuliconus Liang, 2000 , but differs in: antenna extremely long and slender, length of middle segment 17–18 times its width; upper margin of pronotum undulated before shoulders straight behind shoulders in profile; with a pair of abbreviated carinae in middle of pronotum; midkeel of upper and lower side of hind femur dentate, with large teeth before antegenicular denticles.

Distribution. China (Guangxi).

Figures

FIGURE 13. Falconius longicornis sp. nov. a) body of female, dorsal view; b) body of female, lateral view; c) head of female, lateral view; d) head of female, frontal view; e) middle segment of antennae; f) posterior tarsal segments of female; g) subgential plate of female, ventral view; h) subgential plate of male, lateral view (enlargement bar: = 1 mm).

FIGURE 1 – 12. 1: Pronotum of Falconius guangxiensis Zheng et Jiang, dorsal view; 2: Pronotum of Falconius annuliconus Liang, dorsal view; 3: Pronotum of Falconius pseudoclavitarsis Günther, dorsal view; 4: Pronotum of Falconius palawanicus Günther, lateral view; 5: Pronotum of Falconius bedoti (Bolivar), lateral view; 6: Pronotum of Falconius dubius Günther, lateral view; 7: Midfemur of Falconius bedoti (Bolivar), lateral view; 8: Midfemur of Falconius clavitarsis (Bolivar), lateral view; 9: Head of Falconius clavatus Bolivar, frontal view; 10: Head of Falconius undatifemura Zheng et Wang, frontal view; 11: Pronotum of Falconius inaequalis (Brunner von Wattenwyl); 12: Pronotum of Falconius deceptor Günther, lateral view.