Rhinoncomimus latipes Korotyaev, 1997

Huang, Junhao, Yoshitake, Hiraku, Zhang, Runzhi & Ito, Motomi, 2013, Taxonomic Review of the Genus Rhinoncomimus (Coleoptera: Curculionidae: Ceutorhynchinae) with description of a new species from Yunnan, China, Zootaxa 3750 (2), pp. 143-166 : 161-165

Rhinoncomimus latipes Korotyaev, 1997

( Figs. 9–10 , 23–24 , 89–96 , 105 )

Rhinoncomimus latipes Korotyaev, 1997a: 287 (type locality: Korea).—Hong, Egorov and Kwon, 1999: 58.—Hong, Egorov and Korotyaev, 2000: 115.—Korotyaev and Hong, 2004: 145.—Colonnelli, 2004: 33 (in catalog).—Korotyaev, 2006: 111 Supplementary description. Male genitalia. Male. LB: 2.07–2.18 (mean, 2.13). LR: 0.43–0.52 (mean, 0.50). LP: 0.66–0.69 (mean, 0.68). N = 4 for all measurements. Spiculum gastrale (sternite IX; Fig. 93 ) relatively robust, evidently longer than the penis or its apodeme, bent leftward. Tegmen ( Fig. 92 ) with apodeme short and slender, nearly 0.4 times as long as the diameter of the tegminal ring, weakly widened toward the apex. Penis ( Figs. 89–91 ) long and slender, relatively thick in profile, slightly bent upward in the apical 1/3; sides subparallel from the base to basal 2/3, then gradually convergent apically; apical projection ( Fig. 88 ) rounded at apex. Basal part of the endophallus ( Fig. 89 ) with a pair of plate-like sclerites, numerous moderately dense minute spicules and numbers of smaller plate-like sclerites.

Female. LB: 1.96–2.39 (mean, 2.23). LR: 0.47–0.57 (mean, 0.54). LP: 0.61–0.77 (mean, 0.71). N = 5 for all measurements. Female genitalia. Sternite VIII ( Fig. 94 ) with a pair of patches of several minute setae near the apex; arms relatively broad, nearly 0.8 times as long as apodemes, slightly shorter than the coxite and stylus combined, moderately basally fused, and apically subparallel; apodemes slender, moderately divergent near the apex. Coxites ( Fig. 95 ) robust, nearly four times longer than styli; styli apicolaterally inserted, long and slender, nearly five times longer than wide. Spermatheca ( Fig. 96 ) with cornu slender, strongly curved and slightly attenuate; collum slightly convex; ramus indistinct; insertions of the duct and gland relatively close to each other.

Specimens examined. CHINA. ZHEJIANG. 1 female, Qingyuan, Mt. Baishanzu, 800 m, 20-VII-1994, IOZ(E)894539 (IZCAS). Pujiang, Yantou, Sanbushi, on Polygonum sp.: 2 males and 1 female, 17-VII-2005, J. Huang, IOZ(E)1027007, 1027294, 1027317 (IZCAS); 1 female, 18-VII-2005, J. Huang, IOZ(E)985836 (IZCAS). FUJIAN. 1 male, Jianyang, Huangkeng, 290 m, 20-VI-1960, S. Jiang, IOZ(E)894644 (IZCAS). 1 male and 1 female, Jianyang, Huangkeng, Changba, 340–400 m, 17-VI-1960, S. Jiang, IOZ(E)894765, 894793 (IZCAS). 1 female, Chong’an, Xingcun, 200 m, 6. VI. 1960, F. Pu, IOZ(E)894747 (IZCAS). Chong’an, Xingcun, Sangang: 3 males, 800 m, 8-VII-1960, Y. Zuo, IOZ(E)894646, 894629, 894620 (IZCAS); 1 male, 740 m, 14-V-1960, Y. Zhang, IOZ(E)894627 (IZCAS); 1 male, 740 m, 14-V- 196?, IOZ(E)896594 (IZCAS); 1 female, 740m, 20-V-1960, Y. Zhang, IOZ(E)894563 (IZCAS); 1 female, 740 m, Y. Zhang, 23-VI-1960, IOZ(E)894560 (IZCAS); 1 female, 740 m, 12-VI-1960, Y. Zuo, IOZ(E)895106 (IZCAS); 1 female, 740 m, Y. Zuo, 13-VI-1960, IOZ(E)894568 (IZCAS). Shaowu, Wuku: 2 females, 25-V-1965, IOZ(E)894807 (IZCAS), 894819; 1 male, 25-VI-1965, IOZ(E)894799 (IZCAS). GUANGXI. 1 male, Jinxiu, Luoxiang, 400 m, 14-VI-1999, M. Gao, IOZ(E)894543 (IZCAS). 50 males and 46 femals, IV. 2005 (NIAES). JIANGXI. 1 female, Jiangsi, Wuning, 27-VIII-1966, T.S. Teng, IOZ(E)894818 (IZCAS). 17 males and 8 females, Jiangxi, Yingtan, Mt. Longhushan, VIII-2003, Li et al. (NIAES). 64 males and 54 females, Jiangxi, Zixi, Yangjianling, VIII. 2003, Wen et al. (NIAES). HUBEI. 26 males and 18 females, Hubei, Tongcheng, Mt. Tongboshan, 1600 m, IX. 2003, Li et al. (NIAES). HUNAN. Yongshun, Shanmuhe-linchang, 600 m. 1 male and female, 4-VIII-1988, S. Wang, IOZ(E)894556–894557 (IZCAS). 1 male and 2 females, 5-VIII-1988, S. Wang, IOZ(E)894545, 894551–894552 (IZCAS); 3 males and 4 females, 5-VIII- 1988, X. Zhang, IOZ(E)894546–894550 (IZCAS). 43 males and 48 females, Hunan, Pingjiang, Mt. Mupushan, bordering on Jiangxi, 1600 m, 1–12-VIII-2003, Li et al. (NIAES). 18 males and 23 females, Hunan, Hengshan, Mt. Hengshan, 1500 m, VIII-2003, Wu et al. (NIAES). GUIZHOU. 1 male and 3 females, Mt. Leigongshan, Xiaodanjiang, 760–940 m, 31-V-2005, J. Huang, IOZ(E)985678–985680, 985735 (IZCAS). 1 female, Mt. Leigongshan, Lianhuaping, 1600 m, 31-V–1-VI-2005, D. Ge, IOZ(E)985715. KOREA. 1 male and 1 female, Gyeongsangnamdo, Jinju, Jeomchon, Yeoiha, 5-VI-1997, D.S. Ku (IZCAS). 1 male and 2 females, Gyeonsangbukdo, Punggi, 14-VI-1997, K. Morimoto (NIAES). 1 female, Teagu, Suseonggu, Nobyondong, 12- VIII-1989, Lee lab (NIAES). 1 female, Gangwondo, Hongchon, 11-VI-1997, K. Morimoto (NIAES). JAPAN. 1 female, Saitama, Urawa, 13-VII-1982, F. Fujita (NIAES).

Distribution. China (Zhejiang, Fujian, Jiangxi, Hunan, Guangxi, Guizhou), Eastern Siberia, Korea, Japan; United States (introduced).

Biological notes. This species occurs on Polygonum thunbergii Sieb. et Zucc. , Persicaria perfoliata (L.) H. Gross ( Polygonaceae ) (Korotyaev, 2006). The weevil was introduced from China to the United States in 2004 as a biocontrol agent against the Asian native vine P. perfoliata (Colpetzer et al. 2004; Frye et al. 2010). This insect feeds on P. perfoliata leaves as an adult, chewing characteristic small round holes, and its larvae develop internally in the plant stems (Hough-Goldstein & LaCoss, 2012).

Remarks. The species is very close to Rh. rhytidosomoides in having a much smaller body than the other Rhinoncomimus species, and keel-like convex elytral intervals bearing a row of dense acute granules. It can be distinguished by its simple protibia lacking a mucro, and stout tarsi with segment III more than twice as wide as segment II.

Figures

FIGURE 105. Geographic distributions of Rhinoncomimus latipes and Rh. rhytidosomoides.

FIGURES 9 – 12. Habitus of Rhinoncomimus spp. (9 – 10) Rh. latipes, female. (11 – 12) Rh. rhytidosomoides, male. (9, 11) Dorsal habitus. (10, 12) Lateral habitus. Scale bars: 0.50 mm.

FIGURES 13 – 24. Heads of Rhinoncomimus spp. (13 – 16) Rh. klapperichi. (17 - 20) Rh. latipes. (21 – 22) Rh. continuus. (23 – 24) Rh. niger. (13 – 14, 17 – 18, 21 – - 22, 23 – 24) Males. (15 – 16, 19 – 20) Females. (13, 15, 17, 19, 21, 23) Dorsal view. (14, 16, 18, 20, 22, 24) Lateral view. Scale bars: 0.50 mm.

FIGURES 89 – 96. Male and female terminalia of Rhinoncomimus latipes from Sichuan, China. (89 – 93) Male. (89) Penis, dorsal view. (90) Apex of the penis, dorsal view. (91) Penis, lateral view. (92) Tegmen. (93) Sternites VIII and IX. (94 – 96) Female. (94) Sternite VIII. (95) Coxite and stylus. (96) Spermatheca. Scale bar: 0.20 mm for 89 – 94, 0.10 mm for 95 – 96.

FIGURES 81 – 88. Male and female terminalia of Rhinoncomimus robustus from Fujian, China. (81 – 85) Male. (81) Penis, dorsal view. (82) Apex of the penis, dorsal view. (83) Penis, lateral view. (84) Tegmen. (85) Sternites VIII and IX. (86 – 88) Female. (86) Sternite VIII. (87) Coxite and stylus. (88) Spermatheca. Scale bar: 0.20 mm for 81 – 86, 0.10 mm for 87 – 88.