Identification key to the nine Glyptothrips species recorded from South America

1. Tube at least 1.0x as long as head or longer (Fig. 19)......................................................... 2

- Tube shorter, at most 0.9x as long as head (Fig. 47).......................................................... 3

2. Pterothoracic ventrolateral setae thick and capitate (Fig. 21); antennae with 8 elongate segments (Fig. 23), antennal segment IV with 4 sense cones; head more than 1.4x as long as greatest width, genae mostly straight (Fig. 20).............. divergens

- Pterothoracic ventrolateral setae acute, indistinct from discal setae (Fig. 26); antennae with 7 globose segments (Fig. 26), antennal segment IV with 2 or 3 sense cones; head less than 1.35x as long as greatest width, genae curved...... flavescens

3. Head with PO at least 0.8x as long as the dorsal length of the compound eye (Fig. 32).............................. 4

- PO very small or scarcely visible, less than 0.5x as long as the dorsal length of the compound eye (Fig. 58)............. 6

4. Pterothoracic ventrolateral setae thin and acute, indistinct from meso-metasternal setae; fore femora without any thick and capitate setae (Figs 9–10); antennal segments II–IV without capitate setae (Fig. 12), antennal segment IV with 3 sense cones................................................................................................ bucca

- Pterothoracic ventrolateral setae thick and capitate, distinct from meso-metasternal setae (Fig. 33); fore femora with at least one thick and capitate setae (Figs 31, 63); antennal segments II–IV each with at least one pair of capitate setae (Fig. 35), antennal segment IV with 4 sense cones........................................................................... 5

5. Legs mostly brown (Figs 31, 33); antennal segments III and IV bicolored, yellow on thinner basal area and brown elsewhere (Fig. 35); PO setae straight (Fig. 32); males with a large pore plate covering most of sternite VIII (Fig. 36)........ fuscipes

- Legs mostly yellow (Figs 62–63); antennal segment III mostly yellow, much paler than the mostly brown antennal segment IV (Fig. 64); PO setae curved; males with a slender transverse pore plate on sternite VIII....................... silvaticus

6. Antennal segment IV with 2 sense cones; head less than 1.2 times as long as greatest width, lateral margins greatly curved into a constrict basal neck (Fig. 67); males with a transverse pore plate on abdominal sternite VIII, anterior margin concave, not covering the whole sternite (Figs 70–72)............................................................ subcalvus

- Antennal segment IV with 4 sense cones; head at least 1.25 times as long as greatest width, lateral margins straight without a constrict basal neck (Figs 38, 48, 58); males with a large pore plate covering most of abdominal sternite VIII (Fig. 40)..... 7

7. Head dorsal sculpture transversely elongate (Fig. 48); tube less than 0.7 times as long as head (Fig. 47)......... longiceps

-. Head dorsal sculpture with equiangular reticulation (Figs 38, 58); tube about 0.8–0.9 times as long as head (Figs 37, 57)... 8

8. Head about 1.25–1.35x as long as greatest width (Fig. 38).............................................. hylaeus

- Head about 1.45–1.55x as long as greatest width (Fig. 58)............................................. saltuarius