Termioptycha longiclavata Rong & Li, 2017

Li, Houhun, 2017, Review of the genus Termioptycha Meyrick, 1889 (Lepidoptera, Pyralidae) from China, with descriptions of four new species, Zootaxa 4329 (2), pp. 159-174 : 162-163

Termioptycha longiclavata Rong & Li , sp. nov.

( Figs 5 , 15 , 24 )

Type material. CHINA: Holotype ♂, Linjiapu (25.29°N, 98.70°E), Tengchong , Yunnan, 2144 m, 14.VIII.2014, coll. Kaijian Teng, Shurong Liu and Hua Rong, slide No. RH 15422 . Paratypes (5♂, 2♀): Yunnan: 1♂, 1♀, 14– 16.VIII.2014, other same data as holotype, slide No. RH 15176 ♀ ; 2♂, 1♀, Nankang, Baoshan, 2009 m, 9– 10.VIII.2014, coll. Kaijian Teng, Shurong Liu and Hua Rong, slide Nos. RH15419♂, RH15420♀, RH15421♂; 1♂, Tengchong , 2116 m, 11.VIII.2014, coll. Kaijian Teng, Shurong Liu and Hua Rong, slide No. RH 15175 ♂ ; Sichuan: 1♂, Fengtongzhai, Baoxing County, Ya’an , 2180 m, 2.VIII.2016, coll. Jiping Wan, slide No. RH 1 6418.

Diagnosis. This new species is similar to T. eucarta in both forewing pattern and male genitalia, but it can be distinguished in the male genitalia by the gnathos with a long clavate median process, and the valva with a narrow membranous zone posterior to costa. In T. eucarta , the median process of the gnathos is short and rounded, and the valva has no membranous zone posterior to the costa.

Description. Adult ( Fig. 5 ) wingspan 24.0–31.0 mm. Head white, mixed with black and greyish green. Male labial palpus with first segment black, greyish green basally, white apically, about 1/2 length of second; second segment reaching vertex apically, white mixed with yellowish fuscous, black on outer side, with long white hairlike scales on inner side, ventral surface with long black hair-like scales on distal 1/3; third segment black, white basally and apically, with long blackish grey hair-like scales on ventral surface, about 1/3 length of second; female labial palpus slightly thicker than male, with shorter hairs on inner side. Maxillary palpus compressed and short in both male and female, white, mixed with black apically. Antenna with scape expanded, black on ventral surface, white on dorsal surface; male flagellum yellowish fuscous on ventral surface, with short greyish white cilia slightly longer than diameter of antenna, black with white annulations on dorsal surface; female flagellum black, slightly thinner than male. Thorax black, mixed with white and greyish green; tegula greyish white, mixed with greyish green and black. Forewing with basal area greyish green mixed with black, white near thorax; median area white, evenly suffused with greyish green scales; distal area reddish fuscous, with more black scales at apex; costal margin longitudinally with a greyish green rectangular patch; antemedian line black, extending from middle of cell on lower margin oblique outward to basal 1/3 of dorsum; postmedian line black, greyish green on anterior 1/6, serrate, extending from distal 1/3 of costal margin oblique outward to M3, then inward to CuP, finally outward to distal 1/3 of dorsum, edged with obscure white scales along outer side; discal and discocellular spots represented by a black tuft, with white scales bordering its outer side; another small black tuft at middle of cell on lower margin, with white scales bordering its outer side; terminal line greyish white, evenly spaced with uniform black rectangular spots along its inner side, interrupted with greyish white on veins. Hindwing grey, darkening toward termen, almost black along termen; short oblique black stripe from upper corner to lower corner of cell; postmedian line black, interrupted, extending from distal 1/3 of costal margin oblique outward to CuA2, then inward to distal 1/5 of dorsum, with black spot at CuA2 and 2A respectively, edged with greyish white along outer side. Cilia of both wings reddish fuscous, interrupted with black on extension of veins on anterior half. Legs white, mixed with black and greyish green on outer side; mid and hind tibiae with white mixed with greyish green hair-like scales on outer side; tarsi black, with each tarsomere white at apex. Abdomen black, suffused with white and yellowish fuscous; 1st to 4th segments white, mixed with greyish green on dorsal surface posteriorly.

Male genitalia ( Fig. 15 ). Uncus relatively narrow, parallel in basal 2/3, narrowed from 2/3 to apex; apex shallowly concave at middle. Gnathos with median process long clavate, bearing dense thick and short setae; lateral arms thick and short, strongly sclerotized, with an elliptical process produced from base, covered with dense short setae. Valva rhomboid, with fine hairs on distal 1/3, with a thumbed process at base carrying sparse hairs, its distal half serrate along edge; terminal margin obtuse; costa reaching apex of valva, with a tuber beyond middle and covered with sparse hairs, with a spine at apex; membranous zone situated posterior to costa and equal to width of costa; sacculus shorter than valva, wide basally, narrowed distally. Juxta rectangular, wider than long; lateral lobes sub-triangular, extending outward, narrowed to apex. Saccus broad, triangular. Aedeagus straight, approximately as long as valva; cornuti composed of a tight bunch of spines of varied length.

Female genitalia ( Fig. 24 ). Papillae anales triangular, obtuse on posterior margin, with dense long hairs. Eighth segment rectangular, with sparse setae posteriorly; sternite slightly narrowed medially. Apophyses anteriores about 2/3 length of apophyses posteriores, slightly thick. Antrum weakly sclerotized, narrow, annular. Ductus bursae membranous, thinner medially. Corpus bursae ovate, slightly shorter than ductus bursae; signa rounded, conspicuously different in size, one much smaller than another.

Distribution. China (Sichuan, Yunnan).

Etymology. The specific name is derived from the Latin longi- and clavatus, referring to the long clavate median process of the gnathos.

Figures

FIGURES 4 – 13. Adults of Termioptycha spp. 4, T. nigrimacularis sp. nov., holotype, ♂; 5, T. longiclavata sp. nov., paratype, ♂; 6, T. cornutitrifurca sp. nov., holotype, ♂; 7, T. longispina sp. nov., holotype, ♂; 8, T. albifurcalis, ♀; 9, T. bilineata, ♂; 10, T. conjuncta, ♂; 11, T. margarita, ♀; 12, T. eucarta, ♂; 13, T. inimica, ♂. Scale bars: 2.0 mm.

FIGURES 14 – 19. Male genitalia of Termioptycha spp. 14, T. nigrimacularis sp. nov., paratype, slide No. RH 15532; 15, T. longiclavata sp. nov., paratype, slide No. RH 15175; 16, T. cornutitrifurca sp. nov., holotype, slide No. WYP 06024; 17, T. longispina sp. nov., holotype, slide No. WYP 06018; 18, T. albifurcalis, slide No. RH 16075; 19, T. bilineata, slide No. RH 16053. Scale bars: 0.5 mm.

FIGURES 24 – 28. Female genitalia of Termioptycha spp. 24, T. longiclavata sp. nov., paratype, slide No. RH 15176; 25, T. albifurcalis, slide No. RH 16076; 26, T. conjuncta, slide No. RH 16018; 27, T. margarita, slide No. RH 15346; 28, T. eucarta, slide No. RH 16022. Scale bars: 0.5 mm.