Chrysotropidia Navás, 1911

Wu, Jingyu & Liu, Xingyue, 2024, Systematics of the green lacewing tribe Ankylopterygini Navás, 1910 (Neuroptera: Chrysopidae: Chrysopinae) from China, Zootaxa 5540 (1), pp. 1-169 : 58

Subgenus Chrysotropidia Navás, 1911

Chrysotropia Navás, 1911a: 12 . Type species: Chrysotropia lacroixi Navás, 1911a: 13 . Monotypy.

Diagnosis. Body medium-sized. Body length 8.3–11.5 mm, forewing length 11.5–14.2 mm, hindwing length 9.5– 12.7 mm. This subgenus is characterized by the presence of the head without spots and sometimes with reddish stripes behind compound eyes, the antennae with reddish stripes on the outer side or not, the frons, the clypeus and gena without spots, the maxillary palpi black on outer side, the brownish yellow labial palpi, the pronotum occasionally with pale brown markings on lateral margin, the mesoprescutum sometimes with reddish quadrate spots, the metanotum usually without spots, the legs without spots, the pretarsal claw with basal dilation, the forewings without shadings, the indistinct pterostigma, the sinuate radial crossveins in apical half, the ovoid cell im, the gradates in two divergent rows, the basal crossvein of inner gradate series meeting Psm, the opened cell dcc, the hindwing with black suffusion on apical posterior margin, the male sternum VIII fused with sternum IX, the sternum IX elongated in various degrees, the entoprocessus in different shapes and with many long gonosetae on associated membrane, the short wide arcessus, the apically bilobed female subgenitale, the short vela, the absence of the ventral impression absent, and the long curved duct.

Distribution. Palaearctic and Oriental regions.

Key to species of Chrysotropia in China

1. Mesoprescutum with reddish quadrate spots; antennae with reddish scape on outer side............ C. abdominata sp. nov. Head and thorax without markings........................................................................ 2

2. All crossveins of forewing and hindwing brown; length of male sterna VIII + IV about 3.0 times as long as tergum VIII; male entoprocessus ovoid............................................................................. C. ciliata Most crossvein of forewing and hindwing pale; length of male sterna VIII + IV about 2.0 times as long as tergum VIII; male entoprocessus quadrate, with an invagination on top................................................. C. orientalis