Euricania ocellus ( Walker, 1851 ), 1989

Xu, Chang-Qing, Liang, Ai-Ping & Jiang, Guo-Mei, 2006, The Genus Euricania Melichar (Hemiptera: Ricaniidae) From China, Raffles Bulletin of Zoology 54 (1), pp. 1-10 : 7-8

Euricania ocellus ( Walker, 1851)

( Figs. 53-65 )

Pochazia ocellus Walker, 1851: 429 .

Euricania ocellus - Melichar, 1898: 259; Distant, 1906: 385; Chou & Lu, 1977: 314; Yang, 1989: 201.

Material examined. – China: 13 males, 10 females, GUANGXI: Guilin, Liangfeng , 200m, coll. C. G. Wang, 11 Jul.1963 ; 2 males, Guilin , coll X. K. Yang, 12 Jul.1992 ; 9 males, 10 females, Guilin, Yanshan , 200m, coll. Y. S. Shi, 10 Jul.1963 ; 1 male, 1 female, Longzhou , Nonggang, 15 Jun.2000 , coll. J. Yao; 1 male, 1 female, Longzhou, Nonggang , coll. C. D. Zhu, 15 Jun.2000 ; 1 male, Longzhou, Sanlian , coll. W. Z. Li, 15 Jun.2000 ; 2 males, 1 female, Longzhou, Nonggang , 330m, coll. J. Chen, 15 Jun.2000 ; 2 males, Yangshuo , 150m, coll. S. Y. Wang, 20 Jul.1963 ; 1 male, 2 females, Baishou, 25 Jun.1959; 3 males, Lingtian , coll. Z. L. Wu & X. L. Lu, 3 Jun.1984 ; 4 males, 4 females, HAINAN: Baoting , 80m, coll. C. Q. Li, 16 May1960 ; 5 males, 4 females, Shuiman , 640m, coll. S. F. Li, 30 May1960 ; 2 males, Lehui , coll. K. R. Huang, 06 May1954 ; 1 male, GUANGDONG: Lianxian , coll. Y. W. Zhang, 28 Jun.1965 ; 2 males, Nada , 25 Apr.1954 , coll. K. R. Huang ; 1 male, Lechang, Pingshi , coll. Y. W. Zhang, 1 Jul.1965 ; 2 males, HUNAN: Changsha, Yuelushan , coll. unknown, 2 Aug.1957 ; Changsha : Yuelushan , 1 male, 1 female, coll. unknown, 15 Jul.1955; 1 male, Hunan , coll. unknown, no date ; 27 males, 10 females, Chenzhou , coll. Y. L. Zhang & Y. H. Chai, 18-26 Jul.1985 ; 3 males, 11 females, Hengshan , coll. Y. L. Zhang & Y. H. Chai, 10 Aug.1985 ; 9 males, 2 females, Changsha, Yuelushan , coll. Z. R. Lei, 30 Aug.1991 ; 2 males, GUIZHOU: Lilang , coll. Y. Z. Du, 10 Jul.1994 (all in IZCAS except 4 males, 2 females in RMBR) . Vietnam: 1 male, Tonkin, Hoa-Binh , coll. unknown, no date ( IZCAS) .

Length (incl. teg.). – Male 10.5-11.0 mm, female 11.0-12.0 mm.

Description. – General colour brown. Head (incl. eyes) ( Fig. 53 ) wider than pronotum. Frons ( Fig. 54 ) with central carina longer than half length of frons; sublateral carinae shorter than central carina at about 1:3; lateral carinae yellow. Carina between eyes brown. Clypeus brown, central carina indistinct. Vertex ( Fig. 53 ) brown, wider at anterior margin than long in middle line about 17:1, with light brown macula in each posterior corner, carinate centrally; occipital margin carinate, piceous. Pronotum narrow, wider at widest part than long in middle line about 13:1; anterior margin carinate. Mesonotum and mesopleura brown or piceous.

Tegmina ( Fig. 55 ) with costal marginal fascia brown, with a yellow spot near middle, with a very small white spot at outer lower angle of the yellowish spot; apical and inner margins with brown fasciae; disc with 2 transverse fasciae: outer fascia nearly straight and connected with apical fascia near posterior corner, inner fascia forming a ring in middle with central part of the ring white; R1 and R2 with a long common stem; apex round, common stem closed to claval suture. Wings ( Fig. 56 ) rather small, apical margin with a brown fascia, costal and inner marginal fasciae very narrow, brown.

Legs yellow; fore femora with 2-3 lateral spines; middle femora with 4-5 lateral spines. Abdomen brown or dark brown. Tegula brown or dark brown. Eyes piceous, ocelli rufous.

Male genitalia. – Anal segment in dorsal view ( Figs. 57, 58 ) longer than wide at middle about 1.5:1, lateral margin convex, basal margin slightly convex; in profile view with ventral margin convex; anal style set about in middle, close to apex. Aedeagus stout. In dorsal view ( Fig. 59 ), phallobase with dorsal process very long, directed first cephalad then laterad at apex, longer than half length of phallobase in middle line at about 1:2; lateral process shorter than dorsal process at about 1:5, directed laterad at apex. In ventral view, phallobase ( Fig. 60 ) not constricted medially, apex concave medially. In profile view, phallobase ( Fig. 61 ) dilated basally. Genital styles ( Fig. 58 ) longer than wide at middle about 1.7:1.

Female genitalia. – Anal segment ( Fig. 62 ) rather small, ventral margin slightly convex; anal style set at middle, apical margin in dorsal view ( Fig. 63 ) almost straight, ventral margin concave, lateral margin almost straight. Gonophysis VIII ( Fig. 64 ) tadpole-shaped, basal part and anterior part in an acute angle. Pregenital sternite ( Fig. 65 ) with anterior margin and ventral margin nearly straight medially. Bursa copulatrix ( Fig. 62 ) second pouch slightly bigger than first pouch.

Distribution. – China (Guangxi, Hainan, Hunan, Guizhou, Taiwan); Bengal, Sikkim, India, Japan, Vietnam.

Remarks. – This species is similar to E. brevicula , but can be separated from the latter by its shorter sublateral carinae of frons ( Fig. 54 ) and very long dorsal spinose process of the male phallobase ( Fig. 59 ).

Host plants. – Silver chain, orange, tea plant, tung, and castoroil plant.

Figures

Figs. 53-65. Euricania ocellus (Walker): 53, vertex, pronotum and mesonotum, dorsal view; 54, frons and clypeus; 55, tegmina; 56, wing; 57, male genitalia, left side; 58, male anal segment, dorsal view; 59, aedeagus, dorsal view; 60, aedeagus, ventral view; 61, aedeagus, left side; 62, female genitalia, left side; 63, female anal segment, dorsal view; 64, gonophysis VIII, right side; 65, pregenital sternite. Scale bars: Figs. 53, 54, 62 = 1.25mm; Figs. 55, 56 = 3.2mm; Fig. 57 = 0.635mm; Figs. 58, 59-61, 63 = 0.4mm; Figs. 64, 65 = 0.5mm.