Gargela furca, Song, Shimei, Chen, Fuqiang & Wu, Chunsheng, 2009

Song, Shimei, Chen, Fuqiang & Wu, Chunsheng, 2009, A review of the genus Gargela Walker in China, with descriptions of ten new species (Lepidoptera: Crambidae, Crambinae), Zootaxa 2090, pp. 40-56 : 53-54

Gargela furca sp. nov.

Figs. 10 , 22 , 33

External characters. Wing span 12–14mm. Frons, antennae, labial palpi and maxillary palpi orange-brown. Thorax and abdomen yellowish dorsally; legs yellow-brown. Forewing silvery white; medial line pale fuscous, from middle of costa to discocellulares, then bent to inner margin; submarginal line pale fuscous, from costa to vein M1 then bent inwards to anal angle; marginal area suffused with orange-yellow longitudinal fasciae along the veins and a black spot between M3 and Cu1; a pale fuscous marginal line from apex to middle of outer margin; cilia silvery white. Hindwing pure white; cilia white, male with a tuft of yellow-brown cilia at anal angle.

Male genitalia. Uncus strong, the apex pointed, ventral with a tuft of thick setae; gnathos tapering pointed, slightly curved to dorsal; tegumen triangular; valva narrow, protruding at apex, costal arm strong, much longer than valva, apart from costal arm, the middle of costal arm with a long spine-like process, the apex of costal arm strong pointed, curved upwards; juxta bifid, apically with two sharp processes; aedeagus elongate, with a small spine-like cornutus at apex.

Female genitalia. Anal papillae weakly fused, with dense setae; apophysis posterioris about 1/2 the length of apophysis anterioris; ostium bursae funnel-shaped, slightly sclerotized; ductus bursae long, a lateral enlargement in the base of the ductus bursae and a swollen at middle with a fold near corpus bursae; corpus bursae rounded, with two rhombus-like signa.

Holotype. IZCAS: 3, Sichuan, Xichang (27.9ºN, 102.2ºE), 1980. VII.13, leg. Zhang Baolin (genital slide number C1672).

Paratypes. IZCAS: 2Ƥ, same data as holotype (genital slide number C1685); 2Ƥ, Guizhou, Daozhen Dashahe (23.8ºN, 107.5ºE), 900–1400m, 2004. VIII.24–25, Chen Fuqiang (C1679); 1Ƥ, Beijing, Miyun (40.3ºN, 116.8ºE), 1972. VIII.72, Zhang Baolin (C1073).

Distribution. China (Beijing, Sichuan, Guizhou).

Remarks. This species is similar to G. d i s t i g m a sp. nov. in both external and genital characters. It can be distinguished by following: in external characters, this species only with 1 black spot on marginal area of forewing, while G. d i s t i g m a has 2 spots; in male genitalia, this species with a small spine-like cornutus while without cornutus in latter, the species with the width of valva much narrower than G. distigma , the shape of juxta and the costal arm are absolutely different. Additonally, in female genitalia, it is very difficult to be distinguished with G. albidusa except this species has the ductus bursae folded near corpus bursae; on the other side, G. albidusa has the middle and submarginal lines absent or indistinct while this species has the two lines both clear.

Etymology. The name is derived from the Latin “ furca ”, corresponding to the forklike juxta in male genitalia.

Figures

FIGURES 7 – 12. Adults. 7, G. xizangensis sp. nov., holotype, male; 8, G. albidusa sp. nov., paratype, female; 9, G. distigma sp. nov., holotype, male; 10, G. fu rc a sp. nov., holotype, male; 11, G. fuscusa sp. nov., holotype, male; 12, G. minuta sp. nov., holotype, male.

FIGURES 19 – 24. Male Genitalia (a: aedeagus). 19, G. xizangensis sp. nov.; 20, G. albidusa sp. nov.; 21, G. distigma sp.

FIGURES 31 – 34. Female Genitalia & Venation. 31, G. albidusa sp. nov.; 32, G. distigma sp. nov.; 33, G. fu rc a sp. nov.; 34, venation of Gargela.