Field of Science

Urothripini

Female specimen of Trachythrips astutus, from Thrips of California.


Belongs within: Phlaeothripidae.

The Urothripini are a distinctive group of often wingless thrips found in leaf litter, probably feeding on fungal hyphae. They are characterised by their particularly long anal tubes bearing long terminal setae. The species Habrothips curiosus and Octurothrips pulcher have two-segmented mid- and hind-tarsi and well-developed compound eyes with more than thirty facets, but in all other genera the tarsi are one-segmented and the eyes are simplified with fifteen or fewer facets (Mound 1972).

Characters (from Mound & Marullo 1996): Tergite IX more than 2.0 times as long as tergite VIII medially; anal tube often longer than head, with long terminal setae; hind coxae more widely separated than mid coxae; usually apterous, and with antennal segments III to V closely joined.

<==Urothripini [Urothripinae] MM96
    |--Amphibolothrips Buffa 1909 M72
    |    |--*A. grassii Buffa 1909 M72
    |    |--A. knechteli [=Bebelothrips knechteli] M72
    |    `--A. marginatus [=Bebelothrips marginatus, Trachythrips marginatus] M72
    |--Bebelothrips Buffa 1909 M72
    |    |--*B. latus Buffa 1909 M72
    |    `--B. flavicinctus M72
    |--Conocephalothrips Bianchi 1946 M72
    |    `--*C. tricolor Bianchi 1946 M72
    |--Octurothrips Priesner 1931 M72
    |    `--*O. pulcher Priesner 1931 M72
    |--Urothrips Bagnall 1909 M72
    |    |--*U. paradoxus Bagnall 1909 M72
    |    |--U. bagnalli M72
    |    `--U. minor M72
    |--Bradythrips Hood & Williams in Hood 1925 MM96
    |    `--*B. hesperus Hood & Williams in Hood 1925 MM96
    |--Baenothrips Crawford 1948 MM96 (see below for synonymy)
    |    |--*B. guatemalensis Crawford 1948 MM96
    |    |--B. asper (Bournier 1963) [=*Transithrips asper] M72
    |    |--B. caenosus (Stannard 1952) [=Amphibolothrips (*Verrucothrips) caenosa] M72
    |    |--B. chiliensis Stannard 1970 MM96
    |    |--B. erythrinus (Pelikan 1964) [=Stephanothrips erythrinus] MM96
    |    |--B. indicus (Ananthakrishnan 1966) [=*Bournieria indica] M72
    |    |--B. minutus (Ananthakrishnan 1964) [=*Ramachandraiella minuta] M72
    |    |--B. moundi (Stannard 1970) [=Transithrips moundi] M72
    |    `--B. murphyi M72
    |--Stephanothrips Trybom 1912 MM96
    |    |--*S. buffai Trybom 1912 [incl. S. graminis] M72
    |    |--S. barretti Mound 1972 M72
    |    |--S. bradleyi Hood 1927 MM96
    |    |--S. carolina Hood 1938 MM96
    |    |--S. corticinus Watts 1935 MM96
    |    |--S. ferrari Mound 1972 M72
    |    |--S. fusiantennatus Watts 1935 MM96
    |    |--S. occidentalis Hood & Williams 1925 MM96
    |    |--S. uvarovi M72
    |    `--S. whitcombi Watson 1942 MM96
    |--Trachythrips Hood 1930 MM96
    |    |--*T. watsoni Hood 1929 M72
    |    |--T. albipes Hood 1933 MM96
    |    |--T. astutus M72
    |    |--T. brevis M72
    |    |--T. brevitubus Stannard 1957 MM96
    |    |--T. deleoni Hood 1933 MM96
    |    |--T. epimeralis Hood 1941 MM96
    |    |--T. frontalis Hood 1933 MM96
    |    |--T. gracilis M72
    |    |--T. seminole Hood 1939 MM96
    |    |--T. watsoni M72
    |    `--T. wirshinghi Medina Gaud 1961 MM96
    |--Biconothrips Stannard 1970 M72
    |    `--*B. reedi Stannard 1970 M72
    |--Habrothrips Ananthakrishnan 1967 M72
    |    `--*H. curiosus Ananthakrishnan 1967 M72
    |--Coxothrips Bournier 1963 M72
    |    `--*C. reticulatus Bournier 1963 M72
    `--Ananthakrishnaniella Stannard 1970 M72
         `--*A. tarai Stannard 1970 M72

Baenothrips Crawford 1948 MM96 [incl. Bournieria Ananthakrishnan 1966 M72, Ramachandraiella Ananthakrishnan 1964 M72, Transithrips Bournier 1963 M72, Verrucothrips Stannard 1952 M72]

*Type species of generic name indicated

REFERENCES

[M72] Mound, L. A. 1972. Species complexes and the generic classification of leaf-litter thrips of the tribe Urothripini (Phlaeothripidae). Australian Journal of Zoology 20: 83-103.

[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.

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