Chrysopidia Navás, 1910

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 : 38-39

Subgenus Chrysopidia Navás, 1910

Chrysopidia Navás, 1910a: 54 . Type species: Chrysopidia nigrata Navás, 1910a: 55 . Monotypy.

Diagnosis. Body medium-sized. Body length 9.3–12.5 mm, forewing length 12.8–17.5 mm, hindwing length 11.9– 15.1 mm. This subgenus is characterized by the presence of the head occasionally with reddish stripes behind compound eyes, the antennae with reddish stripes on the outer side or not, the frons, clypeus and gena without spots, the maxillary palpi black on outer side, the pale yellow labial palpi, the not pointed terminal palpomere, the pronotum occasionally with brown markings on lateral margin, the mesoprescutum occasionally with reddish quadrate spots, the metanotum usually without spots, the legs with dense setae and without spots, the pretarsal claw with basal dilation, the wings without shadings, the indistinct pterostigma, the radial crossveins in apical half sinuate, the cell im usually triangular, the gradates in three 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 usually short arcessus, the apically bilobed female subgenitale, the thin spermatheca, the short vela, the absence of the ventral impression absent, and the long curved duct.

Distribution. Palaearctic and Oriental regions.

Key to species of Chrysopidia in China

1. Mesonotum with reddish quadrate spots................................................................... 2 Mesonotum without spots............................................................................... 3

2. 1st rs-psm crossvein located at 2/3 of im; metascutum with reddish quadrate spots; male sterna VIII + IV slightly exceeded distal end of ectoproct; entoprocessus sickle-shaped, wide at base, pointed and curved at tip................... C. nigrata 1st rs-psm crossvein located at or exceeding distal end of im; metascutum without spots; length of male sterna VIII + IV about 3.0 times of tergum VIII; entoprocessus ovoid...................................................... C. regulata

3. Cell im of forewing almost quadrate; arcessus long and straight..................................... C. arcta sp. nov. Cell im of forewing ovoid; arcessus short.................................................................. 4

4. Male sterna VIII + IV shorter than or equal to twice length of sternum VIII....................................... 5 Male sterna VIII + IV obviously longer than twice length of sternum VIII....................... C. macrosterna sp. nov.

5. Medial section of forewing costal vein in male usually thickened............................................... 6 Medial section of forewing costal vein in male usually not thickened............................................ 7

6. Male entoprocessus broad, with spinous process on top............................................... C. remanei Male entoprocessus quadrate, with an arch invagination on bottom........................................ C. sinica

7. No spots behind compound eyes; male entoprocessus broad, with an invagination on top................... C. junbesiana Reddish brown spots behind compound eyes; male entoprocessus teardrop-shaped........................ C. flavilineata