The Genus Euricania Melichar (Hemiptera: Ricaniidae) from China
Total Page:16
File Type:pdf, Size:1020Kb
THE RAFFLES BULLETIN OF ZOOLOGY 2006 THE RAFFLES BULLETIN OF ZOOLOGY 2006 54(1): 1-10 Date of Publication: 28 Feb.2006 © National University of Singapore THE GENUS EURICANIA MELICHAR (HEMIPTERA: RICANIIDAE) FROM CHINA Chang-Qing Xu, Ai-Ping Liang* and Guo-Mei Jiang Institute of Zoology, Chinese Academy of Sciences, 19 Zhongguancun Road, Beijing 100080 People’s Republic of China Email: [email protected] (*Corresponding author) ABSTRACT. – Two new species of Euricania Melichar (Hemiptera: Ricaniidae), E. brevicula, new species, and E. longa, new species, are described from China. Four previously recorded species, E. ocellus (Walker), E. facialis Walker, E. clara Kato and E. xizangensis Chou & Lu are redescribed and illustrated. A key to all the Chinese species in the genus is provided. KEY WORDS. – Hemiptera, Ricaniidae, Euricania, new species, redescription, China. INTRODUCTION Generic diagnosis. – Head including eyes broader than pronotum. Frons oblique, broader than long, with central, The Ricaniidae is one of the smaller families of the sublateral and lateral carinae. Frontoclypeal suture arched. superfamily Fulgoroidea, currently containing about 400 Vertex broad and narrow, with a carina between eyes. described species in over 40 genera (Metcalf, 1955; Chou et Pronotum narrow, with a central carina. Mesonotum narrow al., 1985). The family is mainly distributed in the Afrotropical, and long, with 3 carinae: central carina straight; lateral carinae Australian and Oriental regions, with some species in the inwardly and anteriorly curved, converging closely together Palaearctic Region. The ricaniid fauna of China is very poorly on anterior margin, each bifurcating outwardly near middle known. About 32 species are recorded from China (Fennah, in a straight longitudinal carina to or near anterior margin. 1956; Chou et al., 1985). Much basic taxonomic work on this group is needed in China. Tegmina transparent, moderately ampliate, somewhat elliptical; apical area with a pterostigma; apical margin about The genus Euricania (Hemiptera: Ricaniidae) was established as long as anal margin; with 3 longitudinal veins arising from by Melichar (1898). Until now 43 species were described in basal cell; R1 and R2 with common stem; M veins with the genus from the Oriental, Australian and Palearctic regions. common stem; cross veins on disc enclosing a number of The most recent studies of genus Euricania were by Yang irregular cellular areas on basal half; with 2 transverse lines (1989) and Chou & Lu (1985, 1977), four Euricania species formed by cross veins beyond middle, the inner line much were recorded in China. All these species were described angularly waved. Wings short, with 2 cross veins beyond without genital characters except E. ocellus (Walker) (Yang, middle and several longitudinal veins forked near apex. Hind 1989). In this paper, we describe two new species of Euricania tibiae with 2 lateral spines and 6 apical spines. Male genitalia and redescribe and illustrate the four previously known symmetrical; phallobase with 2 spinose processes at each species from China. The specimens used in this study are apical angle, ventral process twisted, directed cephalad at apex deposited in the Institute of Zoology, Chinese Academy of with basal part incised; genital styles with dorsal and ventral Sciences, Beijing, China (IZCAS), the Raffles Museum of Biodiversity Research, National University of Singapore, margins nearly parallel. Female genitalia symmetrical, bursa Singapore (RMBR), the Insect Collection of Hebei copulatrix with 2 isometric pouches: first pouch with well University, Baoding, China (HU) and the Shanghai Institute visible cell and sclerotized ornamentation; second pouch with of Entomology, Chinese Academy of Sciences, Shanghai, numerous pores; gonaplac with teeth at inner side of apical China (SIE). margin. Distribution. – Australian, Oriental and Palaearctic regions. TAXONOMY Genus Euricania Melichar, 1898 Key to species of Euricania from China Euricania Melichar, 1898: 393 (Type species: Euricania ocellus 1. Tegmina without transverse fasciae (Fig. 29) .. E. clara Kato Walker, 1851). – Tegmina with transverse fasciae (Figs. 3, 16, 42, 55, 68) .....2 1 Xu et al.: Euricania from China 2. Tegmina with ring-shaped fasciae (Figs. 16, 55) ...................3 Kuiqi, 100-200m, coll. unknown, 2 Aug.1955; 1 female, Jianyang, – Tegmina without ring-shaped fasciae (Figs. 3, 42, 68) ....... 4 Huangkeng, Guilin, 300m, coll. S. Q. Jiang, 4 Aug.1955; 1 female, 3. Male aedeagus with dorsal spinose process longer than half Shaowu, Chengguan, 150m, coll. F. J. Pu, 28 Jun.1955; 2 males, 1 length of phallobase (Fig. 59).................... E. ocellus Walker female, ZHEJIANG: Hangzhou, Lingyin, coll. Y. Chou, 19 Jul.1963; – Male aedeagus with dorsal spinose process shorter than half 2 males, Wuyanling, coll. B. Zhen, 20 Jul.1983; 6 males, 4 females, length of phallobase (Fig. 20)........ E. brevicula, new species JIANGXI: Poyang, coll. unknown, 15 Jun.1930; 2 males, Nanchang, 4. Male aedeagus with dorsal spinose process longer than half Meiling, coll. P. Y. Zhu, 4 Jun.1987; 1 male, 1 female, HENAN: length of phallobase (Fig. 46).............. E. longa, new species Jigongshan, 500m, H. X. Wu, 14 Jul.2001; 7 males, 2 females, – Male aedeagus with dorsal spinose process shorter than half Jigongshan, coll. Y. L. Wang & M. N. Wang, 17 Aug.1990; 1 male, length of phallobase (Fig. 7, 72) .......................................... 5 SHANXI: Wugong, coll. Y. J. Liu, 17 Jul.1954 (all in IZCAS except 5. In profile view, male aedeagus dilated near base (Fig. 74) ..... 2 males, 1 female in RMBR). ...................................................... E. xizangensis Chou & Lu Japan: 1 male, 1 female, Kyoto, coll. K. Eki, 22 Aug.1931; 1 male, – In profile view, male aedeagus not dilated near base (Fig. 9). Tokyo: Aoyama, coll. M. Higashino, 9 Aug. 1938; 1 female, Kyoto, ................................................................. E. facialis Melichar coll. Y. Yie, 20 Sep.1935 (IZCAS). Length (incl. teg.). – Male 9.5-10.5 mm, female 10.5-11.0 Euricania facialis Melichar, 1898 mm. (Figs. 1-13) Description. – General colour brown. Head (Fig. 1) (including Euricania facialis Melichar, 1898: 259; Distant, 1906: 385; Chou eyes) narrower than pronotum. Frons (Fig. 2) brown; central et al., 1985: 74. carina longer than half length of frons; sublateral carinae shorter than central carina at about 1:1.4; lateral carinae light Material examined. – China: 1 male, FUJIAN: Jianyang, brown; carina between eyes light brown. Clypeus yellow, Huangkeng, Guilin, 290-310m, coll. F. J. Pu, 4 Aug.1960; 3 males, ecarinate. Vertex yellow, wider at anterior margin than long Jianyang, Huangkeng, Changxian, 340-400m, coll. C. L. Ma 23 in middle line at about 1:16, without central carina, posterior Jul.1960; 1 male, Jianyang, Guilin, coll. Y. G. Li, 14 Jul.1979; 3 males, 1 female, Wuyi, coll. Z. X. Cui, 14 Jul.1984; 2 males, 2 corner with light brown macula, occipital margin carinate, females, San’gang, coll. S. Z. Wang, 15 Jul.1984; 1 male, Fuzhou, brown. Pronotum brown, narrow, wider at widest part than Figs. 1-13. Euricania facialis Melichar: 1, vertex, pronotum and mesonotum, dorsal view; 2, frons and clypeus; 3, tegmina; 4, wing; 5, male genitalia, left side; 6, male anal segment, dorsal view; 7, aedeagus, dorsal view; 8, aedeagus, ventral view; 9, aedeagus, left side; 10, female genitalia, left side; 11, female anal segment, dorsal view; 12, gonophysis VIII, right side; 13, pregenital sternite. Scale bars: Figs. 1, 2, 10 = 1.25mm; Figs. 3, 4 = 3.2mm; Fig. 5 = 0.635mm; Figs. 6, 7-9, 11 = 0.4mm; Figs. 12, 13 = 0.5mm. 2 THE RAFFLES BULLETIN OF ZOOLOGY 2006 long in middle line about 1:6.5, punctated beside central Jiuxianshan, coll. S. Z. Wang, 14 Jul.1979; 4 males, 3 females, carina; anterior margin carinate. Mesonotum and mesopleura GUANGXI: Bobai, coll. J. J. Wang, 18 Jun.1985; 2 males, brown. GUANGDONG: Meixian, Yinnashan, coll. P. Lin, 4-7 Aug.1963 (all in IZCAS except 2 males, 1 female in RMBR). Tegmina (Fig. 3) with costal marginal fascia brown, with a Length (incl. teg.). – Male 9.0-10.0 mm, female 10.5-11.5 mm. yellow spot near middle; apical and inner margins with brown fasciae; disc with a transverse, brown fascia; common stalk Description. – Head (incl. eyes) (Fig. 14) wider than of R1 and R2 longer than base cell. Wings (Fig. 4) small, pronotum. Frons (Fig. 15) brown, longer than half length of costal margin and inner margin with narrow, brown fasciae; frons; sublateral carinae shorter than central carina at about apical margin with a broad, brown fascia. 1:1.2; lateral carinae brown. Carinae between eyes brown. Clypeus yellow, ecarinate or indistinctly carinate. Vertex (Fig. Legs yellowish, fore femora with 3-4 lateral spines; middle 14) brown, wider at anterior margin than long in middle line coxa with one basal spine; middle femora with 3-5 lateral about 15:1, with light brown maculae at each posterior corner; spines. Abdomen brown or dark brown. Tegula dark brown. without central carina; occipital margin with a dark carina. Eyes grey. Ocelli golden. Pronotum brown and narrow, wider at widest part than long in middle line about 5.5:1; punctated beside central carina; Male genitalia. – Anal segment (Figs. 5, 6) large, oblong in anterior margin carinate. Mesonotum and mesopleura brown. dorsal view (Fig. 6), longer than wide at middle at about 1.5:1, lateral margins almost straight, apical margin slightly Tegmina (Fig. 16) with costal marginal fascia brown,