Terthrothrips, Karny, 1925

Tong, Xiaoli, 2017, Two new species and a new record of the fungivorous genus Terthrothrips from China (Thysanoptera: Phlaeothripidae), Zootaxa 4323 (4), pp. 561-571 : 562

Key to Terthrothrips species from China (females)

1. Pronotal am stout and well developed, much longer and stouter than ocellar setae, expanded at apex; aa absent... T. palmatus

-. Pronotal am reduced to minute and fine setae, shorter or as long as ocellar setae, pointed at apex; aa absent or present...... 2

2. Pronotum with 4 pairs of well developed capitate setae (aa, ml, epim and pa) ( Fig. 2 )................................ 3

-. Pronotum with 3 pairs of well developed capitate setae (ml, epim and pa)......................................... 4

3. Pronotal am as long as ocellar setae, fine and acute; metanotum smooth medially with polygonal reticulation laterally; pelta long hat-shaped ( Fig. 7 ) with slender lateral lobes and distinctly sculptured........................... T. levigatus sp. n.

-. Pronotal am variable in length, but not longer than ocellar setae; metanotum sculptured with polygonal reticulation medially; pelta irregularly hat-shaped and weakly sculptured.................................................... T. parvus

4. Fore tibiae with apparent tubercles on inner margin........................................................... 5

-. Fore tibiae without tubercles on inner margin................................................................ 6

5. Antennal segment VIII longer than segment VI; pelta bell-shaped with short lobes laterally............ T.ananthakrishnani

-. Antennal segment VIII much shorter than segment VI; pelta broadly trapezoidal, with indistinct lateral lobes...... T.apterus

6. Eyes approximately 1/3 of head length, equally developed ventrally and dorsally; antenna brown with median segments slightly pale; metanotum smooth medially with polygonal reticulation laterally; pelta irregularly hat-shaped and weakly sculp- tured........................................................................................ T. strasseni

-. Eyes slightly shorter than 1/4 of head length, smaller ventrally than dorsally; antenna uniformly brown; metanotum entirely smooth; pelta triangular and smooth without any sculpture........................................ T. trigonius sp. n.

Figures

FIGURES 1 – 4. Terthrothrips levigatus sp. n. (1) dorsal view of head; (2) pronotum (arrows indicate the anteromarginal setae); (3) ventral view of prothorax; (4) dorsal view of pterothorax.

FIGURES 5 – 9. Terthrothrips levigatus sp. n. (5) abdominal sternites VI – IX of female (6) abdominal sternites VI – IX of male; (7) pelta; (8) tube; (9) antenna.