【摘要】 对扁足瓢蜡蝉属NeoduriumFennah(半翅目,蜡蝉总科,瓢蜡蝉科)进行了重新描记,该属目前已知3种,其中2新种,即指扁足瓢蜡蝉NeoduriumdigitiformumRanetLiang,sp.nov.和平扁足瓢蜡蝉NeoduriumflatidumRanetLiang,sp.nov.。新种模式标本保存在中国科学院动物研究所。更多还原

【Abstract】 The genus Neodurium Fennah, belonging to the tribe Thioniini of the family Issidae, Fulgoroidea, Hemiptera, was erected by Fennah in 1956 (type species: Neodurium postfasciatum Fennah, 1956) (Hubei, China). It has been a monobasic genus. This paper deals with the species of Neodurium from China. We redescribe the genus and its three species, including two new species, Neodurium digitiformum Ran et Liang, sp. nov. and Neodurium flatidum Ran et Liang, sp. nov. A key to the species of the genus is given. The specimens studied were from the Institute of Zoology, Chinese Academy of Sciences, Beijing, China (IZCAS) and Nankai University, Tianjin, China (NU).Neodurium Fennah,1956Neodurium Fennah, 1956: 513. Type species: Neodurium postfasciatum Fennah, 1956. By original designation.Frons longer than broad in middle line (about 1.2∶1.0); lateral margins almost straight, incurved to suture below level of antennae; disc shallowly convex, strongly depressed in middle near frontoclypeal suture, making lateroapical areas prominent; median carina strongly developed in basal 3/4; sublateral carinae feeble, its base strongly incurved and transversely meeting at middle line. Vertex with apical margin subrectangulately convex, posterior margin obtusely angulately excavate, lateral margins straight. Head with two sides slightly grooved between eye and frontoclypeal suture. Clypeus ecarinate, convex. Rostrum slightly surpas- sing mesotrochanters, apical segment shorter than su- bapical segment, very obliquely truncate at apex. Pronotum about as long as vertex in middle line, with a small pit beyond each side of median carina. Mesonotum shorter than combined length of pronotum and vertex, median carina feeble and slightly depressed. Tegmina with claval suture absent; M simple. Hind wings deeply incised on apical margin into two lobes; anal lobe absent; veins simple. Pro- and mesofemora compressed. Post-tibiae with a lateral spine near base and two large distal spines.Female genitalia. Ovipositor with third valvulae stout, strongly convex, their apical margins tumid and bounding a lenticular cavity when apposed. Male genitalia. Aedeagus shallowly U-shaped, ventrally with two blade-like spines in middle, crossed and pointed at base. Genital styles triangular. Distribution. China (Hubei, Yunnan).Remarks. Neodurium is similar to Duriopsis Melichar and Flavina Stl but differs from Duriopsis in the clypeus ecarinate (clypeus with median carina in Duriopsis), and tegminal Sc and R separated from base (tegminal Sc and R forked at base in Duriopsis); and from Flavina in absence of claval suture in tegmina (claval suture in tegmina present in Flavina).Key to species of Neodurium Fennah1.Vertex in middle line more than twice as broad as long(2.2∶1.0); frons with median carina distinct, two lateral carinae feeble but recognizable, enclosing an elongate-oval area; spinal formula of hind leg: ♂ 8-18-2;♀8-15-2N.postfasciatum FennahVertex in middle line not more than twice as broad as long; spinal formula of hind leg not as above22.Frons with median carina distinct, two lateral carinae reaching to and ending at lateral margins; spinal formula of hind leg: 8-19-2N. digitiformum Ran et Liang, sp. nov.Frons with median carina distinct, two lateral carinae feeble but recognizable, enclosing an elongate-oval area; spinal formula of hind leg: ♂ 9-12-2N. flatidum Ran et Liang, sp. nov.1 Neodurium postfasciatum Fennah(Figs. 1-8)Neodurium postfasciatum Fennah, 1956: 513.Body length (incl. tegm.): ♂ 5.2-5.4mm,♀5.5-6.0mm.Tegmen length: ♂ 4.2-4.5mm,♀4.5-4.8mm.Body brown. Vertex quadrate, apical margin obtusely angulately convex, posterior margin subrectangulately excavate; in middle line broader than long (2.2∶1.0), margins dark, ridgy, with dark spots in two sides of middle line (Fig. 1). Frons fuscous, with yellowish brown spots, in middle line longer than broad (1.2∶1.0), median carina distinct, two lateral carinae recognizable (Fig. 2). Clypeus fuscous, with yellowish brown spots at base. Eyes dark brown, oval. Antennae dark brown. Pronotum yellowish, apical margin rounded, arced, posterior margin slightly arced, with dark spots in middle of apical margin and in middle and two lateral areas of posterior margin. Mesonotum triangular, yellowish brown, median carina dark, two lateral angles with dark spots. Thorax ventrally yellowish brown. Abdomen dorsally dark brown, ventrally yellowish brown, posterior margin of each somite brown. Tegmina fuscous, costal margin near apical angle and near basal angle with translucent areas, venation yellowish brown (Fig. 3). Hind wings pale dark. Legs yellowish brown, with dark brown stripes and markings, profemora foliaceously expanded in apical half, with a broad piceous band near apex. Protibiae with subfoliaceous margins. Spinal formula of hind leg: ♂ 8-18-2;♀8-15-2.Male genitalia. Anal segment dorsally convex in middle, anal foramen in middle slightly near apex (Fig. 5). Genital styles in lateral view almost triangular, base convex like a hook (Fig. 6). Aedeagus slightly U-shaped. Aedeagus dorsally with a fan-like process near base (Fig. 7). Specimens examined. China, Hubei Province, 1♂, 1♀, Shiluo, Shennongjia, 920m, 28 Aug. 1981, HAN Yin-Heng (IZCAS); 1♂, Chengguan, Lichuan, 26 June 1977, ZHENG Le-Yi (NU). China, Yunnan Province, 1♀, Santaishan, Mangshi, 18 May 1955, YANG Xing-Chi (IZCAS).Distribution. China ( Hubei, Yunnan ). 2 Neodurium digitiformum Ran et Liang, sp. nov. (Figs. 9-16) Body length (incl. tegm.): ♂ 5.2-5.8mm,♀6.0mm. Tegmen length: ♂4.2-4.7mm,♀4.8-5.0mm.Body fuscous. Vertex dark brown, subquinquangular, in middle line broader than long (1.4∶1.0); margins paler, ridgy, with round spots in two sides of middle line near posterior margin (Fig. 9). Frons yellowish brown, with dark brown spots, in middle line longer than broad (1.3∶1.0), the areas between apical margin and lateral carinae dark brown, lateral areas of median carina dark, two lateral carinae reaching to and ending at lateral margins, carinae paler (Fig. 10). Clypeus yellowish, with dark spots in both sides at base. Eyes blackish brown, oval. Antennae blackish brown. Pronotum fuscous, with yellowish brown spots, apical margin rounded, arced, posterior margin slightly arced, a dark pit beyond each side of middle line. Mesonotum triangular, yellowish brown; middle line depressed, dark, with a dark mark near apical margin beyond each side of middle line. Thorax in ventral view yellowish brown. Abdomen in ventral view dark brown, posterior margins of each somite yellowish brown. Tegmina fuscous, costal margin with two translucent areas near apical angle; venation paler (Fig. 11). Hind wings with venation yellowish brown. Legs yellowish brown, with dark stripes and spots; profemora foliaceously expanded in apical half, with a broad piceous band near apex; protibiae with subfoliaceous margins. Spinal formula of hind leg: 8-19-2. Male genitalia. Anal segment stout, anal foramen in middle, slightly near the base (Fig. 13). Genital styles in lateral view long, triangular, base convex like a hook (Fig. 14). Aedeagus dorsally with a finger-like process near base (Fig. 15). Holotype ♂, China, Hubei Province, Shaping (28.6°0′N,111.3°E), 30 Sep. 1943 (IZCAS). Paratypes: 7♂♂, 2♀♀, same data as for holotype (IZCAS). Remarks. N.digitiformum Ran et Liang, sp. nov. is similar to N.postfasciatum Fennah but differs from the latter in the vertex in middle line less than 2 times broader than long; frons with lateral carina reaching to and ending at lateral margins; aedeagus in dorsal view with a finger-like process near base; and spinal formula of hind leg 8-19-2.Etymology. This species is named for its aedeagus with a dorsal, finger-like process near base.3 Neodurium flatidum Ran et Liang, sp. nov. (Figs.17-24)♂. Body length (incl. tegm.)4.5-4.8mm, Tegmen length 3.5-4.0mm.Body yellowish brown. Vertex subquinquangular, in middle line broader than long (1.65∶1.00), lateral margins ridgy, dark, with dark round spots in two sides of middle line near posterior margin (Fig.17). Frons fuscous, in middle line longer than broad (1.3∶1.0), apical margin concave angularly, posterior margin arced, median carina distinct, two lateral carinae recognizable, carinae yellowish brown (Fig. 18). Clypeus dark brown, with yellowish brown oblique transverse strips; with yellowish brown markings at base. Eyes dark brown, oval. Antennae blackish brown. Pronotum yellowish brown, triangular, with a dark pit beyond each side of middle line, middle areas verrucate. Mesonotum triangular, dark brown, each side of middle line with two oblique carinae. Abdomen in ventral view dark, posterior margin of each somite yellowish. Tegmina yellowish brown (Fig. 19). Legs yellowish brown, with dark brown stripes and spots, profemora foliaceously expanded in apical half, with a broad piceous band near apex. Protibiae with subfoliaceous margins. Spinal formula of hind leg:♂ 9-12-2.Male genitalia. Anal segment broad in apical half, with two lobes, anal foramen near apex (Fig. 21). Genital styles laterally quadrate, base convex, hook-like (Fig. 22). Aedeagus dorsally without process (Fig. 23). Holotype ♂, China, Yunnan Province, Hotspring, Anning (24.9°N,102.4°E), 1 Sep. 1958, CHENG Han-Hua (IZCAS). Paratype 1♂, China, Yunnan Province, Hotspring, Anning, 1 Sep. 1958, CHENG Han-Hua (IZCAS).Remarks. N.flatidum Ran et Liang, sp.nov. is similar to N. postfasciatum Fennah but differs from the latter in the vertex in middle line less than 2 times wider than long; aedeagus in dorsal view without process; and spinal formula of hind leg ♂ 9-12-2.Etymology. This species is named for its aedeagus flat dorsally without process.更多还原