Sisyra yunana Yang, 1986

Yang, Ying, Zheng, Yuchen & Liu, Xingyue, 2024, New species of spongillafly genus Sisyra Burmeister, 1839 (Neuroptera: Sisyridae) from China and Laos, Zoological Systematics 49 (2), pp. 129-142 : 139

Sisyra yunana Yang, 1986 ( Fig. 8 )

Sisyra yunana Yang, 1986: 155 (original description); Yang et al., 1999: 103 (redescription); Yang & Liu, 2023: 29 (redescription). Type locality: China (Yunnan).

Diagnosis. Head brown; antenna with basal two thirds brown (same color as head), distal one third of flagellum yellow (progressively lighter but darkened on most distal five flagellomeres). Forewing costal space weakly broadened basally. Male sternum 9 short, and subquadrate, strongly protruding anteroventrally. Gonocoxites 9 strongly swollen basally, with distal half slender, bearing a rounded tubercle at middle.

Description of male genitalia. Sternum 9 well developed, strongly protruding anteroventrally, subquadrate in caudal view, caudal portion with many transverse wrinkles and protruding trichobotheria, each bearing extremely long bristles. Gonocoxites 9 long and directed posteroventrally; strongly swollen basally, with distal half strongly narrowed; in dorsal view swollen base with a tridactylous-like projection (each tip with a long bristle) and an additional thick bristle on inner margin; a rounded tubercle present on dorsal portion at middle, with many short setae; distal half curved medially in dorsal view, with apex modified into a narrow subtriangular lobe, densely covered by short setae; a long bristle present at tip. Gonocoxites 11 arcuate, ventral margin slightly concaved dorsally in lateral view, without any projection; gonostyli 11 paired, subtriangular, dorsal margin concaved ventrally and lateral margin concaved medially in caudal view. Ectoproct subtrapezoidal, covered by densely long setae; callus cerci with three to five trichobothria. Hypandrium internum indiscernible.

Material examined. Holotype ♀, China: Yunnan, Xishuangbanna, Jinghong, Sancha River , 22°10′N, 100°51′E, 12 March 1981, Chikun Yang leg. ( CAU) . Additional material. 2♂ 2♀, China: Guangxi, Chongzuo, Longzhou , 22°20′N, 106°51′E, 17 May 1982, light trap, Chikun Yang leg. ( CAU) ; 3♂, China: Guangxi, Chongzuo, Longzhou, Nonggang , 22°28′N, 106°57′E, 20 May 1984, Fasheng Li leg. ( CAU) .

Distribution. China (Guangxi, Yunnan).

Remarks. The pairing of the male to the female of S. yunana is primarily based on the same color pattern of the antennae, which is a very important character for distinguishing the species of Sisyra and stable within same species. Nevertheless, further male specimens of this species from the type locality in Yunnan are needed for confirming the present association.

Figures

Figure 8. Sisyra yunana Yang, 1986, male genitalia. A–B. lateral view. C–D. dorsal view; E–F. caudal view. Scale bars=0.1 mm.