Caryanda Stal 1878

Genus Caryanda Stål, 1878

Species group Caryanda tamdaoensis

Differential diagnosis. Caryanda tamdaoensis species-group shares the following diagnostic characters: male supra-anal plate nearly pentagonal; male cerci conical; apical penis valves of phallic complex lathy, upcurved and with a beak-shaped apex in lateral view; in females ventral basivalvular sclerite with inner margins always contiguous with each other.

Composition. This species group consists of five species. A key to species and subspecies is given below.

Key to the species and subspecies of Caryanda tamdaoensis species-group

1. Hind tibiae entirely black in male or blue in female; posterior margin of female subgenital plate concave in middle with two obtuse dentes.............................................................. C. nigrotibia Mao, Xu & Li, 2017

- Hind tibiae blue except base black in both sexes; posterior margin of female subgenital plate not as above.............. 2

2. Hind femora partially red and partially yellow; outer lophi of epiphallus parallelogram in posterior view................ 3

- Hind femora mainly green; outer lophi of epiphallus triangular in posterior view, distally tapering..................... 5

3. Hind femora with yellowish green basal half and reddish apical half in both sexes; posterior margin of female subgenital plate roundly projected at the middle; apical valves of penis and cingular valves long, curved upward, S-shaped....................................................................................... C. tamdaoensis Storozhenko, 1992

- Hind femora either yellowish brown (rare grayish green) or almost red in both sexes; female subgenital plate with posterior margin undulated, medially concaved with two blunt teeth; apical valves of penis and cingular valves relatively short, curved upward, but not S-shaped............................................................................... 4

4. Body size larger, body length 21–23 mm in male or 27–30 mm in female; hind femora yellowish brown (rare grayish green) without any red or pink parts in both sexes.................. C. azurea azurea Gorochov & Storozhenko, 1994, stat. nov.

- Body size smaller, body length 17.7–17.9 mm in male or 20.7 mm in female; hind femora almost red but base yellowish green in both sexes.............................................. C. azurea colourfula Mao, Ren & Ou, 2011, stat. nov.

5. Abdominal tergites darkish green with 2 black longitudinal stripes in male; hind femora with 3/5 basal parts yellowish green and the apical 2/5 orange; female subgenital plate with posterior margin roundly projected at the middle...................................................................................... C. zhenyuanensis Mao, Xu & Li, 2017

- Abdominal tergites black with 3 yellow longitudinal stripes in male; hind femora green with or without a yellow preapical ring in male, or green with or without a red preapical ring in female; female subgenital plate broad, near rectangular, median area concaved, posterior margin nearly straight but weakly excised near both sides....................................................................................................... C. hongheensis Mao, Yin & Song, sp. nov.