Hyidiothripini

Head and pronotum of Preeriella minutus, from Stannard (1957).

Belongs within: Phlaeothripidae.

The Hyidiothripini is a group of exceptionally small, laterally compressed thrips found in leaf litter. The third and fourth segments of the antennae are more or less fused in the genus Hyidiothrips, while in Smicrothrips and Preeriella they are broadly joined but the dividing suture remains distinct (Mound & Marullo 1996).

Characters (from Mound & Marullo 1996; Priesner 1960): Minute pale, frail species. Antenna with seven segments, segments III and IV fused or broadly joined. Pronotal setae long. Wings weak and narrow, sparsely fringed. Tarsi one-segmented. Abdominal pelta with one median slender sclerite and two lateral transverse sclerites; median abdominal segments with pleural sutures visible dorsally; larger lateral abdominal setae often obliquely truncate.

<==Hyidiothripini MM96
    |--Crinitothrips MM96
    |--Machadonia MM96
    |--Adamantothrips P60
    |--Smicrothrips Hood 1952 MM96
    |    `--*S. particula MM96
    |--Hyidiothrips Hood 1938 MM96
    |    |--*H. atomarius Hood 1938 MM96
    |    |--H. japonicus MM96
    |    |--H. nanellus Hood 1957 MM96
    |    `--H. tesselatus Hood 1952 MM96
    `--Preeriella Hood 1939 MM96
         |--*P. minutus (Watson 1937) [=Chirothripoides minutus] MM96
         |--P. fumosa Hood 1957 MM96
         |--P. macilenta Hood 1957 MM96
         |--P. marginata Hood 1957 MM96
         |--P. microsoma Johansen 1982 MM96
         `--P. totonaca Johansen 1986 MM96

*Type species of generic name indicated

REFERENCES

[MM96] Mound, L. A., & R. Marullo. 1996. The thrips of Central and South America: an introduction (Insecta: Thysanoptera). Memoirs on Entomology, International 6: 1-487.

[P60] Priesner, H. 1960. Das System der Tubulifera (Thysanoptera). Anzeiger der Österreichischen Akademie der Wissenschaften Mathematisch-Naturwissenschaftliche Klasse 13: 283-296.

Stannard, L. J., Jr. 1957. The phylogeny and classification of the North American genera of the suborder Tubulifera (Thysanoptera). Illinois Biological Monographs 25: 1-200.