Gargela distigma, 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

Gargela distigma sp. nov.

Figs. 9 , 21 , 32

External characters. Wing span 12mm. Frons, vertex, collar, thorax, tegulae, patagia and legs white; labial palpi white, dorsal yellow-brown; antenna yellow brown. Abdomen pale brown dorsally, ventral body white. 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, with 2 black spots between M2 and Cu1; a fuscous marginal line from apex to middle of outer margin; cilia silvery white, suffused with fuscous. Hindwing silvery white; cilia silvery white.

Male genitalia. Uncus strong, the apex pointed, ventral with a tuft of thick setae; gnathos tapering pointed, slightly curved to dorsal; tegumen triangular; valva broad, protruding at apex, costal arm strong, much longer than valva and apart from valva, the middle of costal arm with a spine-like process, the apex of costal arm strong pointed; juxta plate-shaped, apical with two papillate processes; aedeagus elongate, without cornutus.

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, swollen at middle, corpus bursae rounded, with two rhombus-like signa.

Holotype. IZCAS: 3, Fujian, Mt. Longqi (26.7ºN, 117.4ºE), 500m, 1991. VIII.13, leg. Song Shimei (genital slide number C1681).

Paratypes. IZCAS: 13, Fujian, Mt. Wuyi (26.4ºN, 116.4ºE), 740m, 1982. VI.27, Jiang Fan (genital slide number C1663); 132Ƥ, Jiangxi, Xingguo (26.3ºN, 115.3ºE), 1976. VII.21, Liu Youqiao (C1671, C1682); 132Ƥ, Jiangxi, Ganzhou Shi (25.8ºN, 114.9ºE), 1977. VI.1, Liu Youqiao; 131Ƥ, Jiangxi, Ganzhou Shi (25.8ºN, 114.9ºE), 1984. IX.3, Ganzhou Research Institute of Forestry; 13, Guangxi, Longzhou (22.3ºN, 106.8ºE), 2006. VI. 13, 350m, Li Wenzhu (C1678); 131Ƥ, Guangxi, Longzhou, 2000. VI.15, Zhu Chaodong.

Distribution. China (Fujian, Jiangxi, Guangxi).

Remarks. This species is different with other species by forewing with 2 black spots on marginal area, while other species of this genus with only 1 spot except G. xanthocasis (3 spots). In male genitalia, this species is similar to G. albidusa sp. nov., but the costal arm longer than valva and middle of it with a spinelike process, while G. albidusa has the costal arm shorter than valva and middle of it without the spine-like process.

Etymology. The name is derived from the Latin “ di ” and “ stigma ”, corresponding to the 2 black spots on marginal area of forewing.

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.