Usia lata, Loew, 1846, Loew, 1846
publication ID |
https://doi.org/ 10.11646/zootaxa.3799.1.1 |
publication LSID |
lsid:zoobank.org:pub:56DD05E1-C61C-4D37-9454-396840EB67C0 |
DOI |
https://doi.org/10.5281/zenodo.6135478 |
persistent identifier |
https://treatment.plazi.org/id/A96887E8-FFC1-FF84-FF43-FEAFFC4E03A3 |
treatment provided by |
Plazi |
scientific name |
Usia lata |
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lata View in CoL species group
Included species:
U. anatoliensis Gibbs sp. nov.
U. annetteae Gibbs sp. nov.
U. greatheadi Gibbs sp. nov.
U. transcaspica Paramonov, 1950
Diagnosis. This group of 10 species appears to be monophyletic, all having recognisably similar male and, particularly, female genitalia. With strongly pigmented triangular or rectangular vaginal plate, only in U. transcaspica is it less pigmented, brown rather than black, but still conspicuous. Apical sternite (sternite 8) square or wider than long, convex but not strongly so. Apical processes (sternite 9) short, not usually longer than wide, usually a shallow apical emargination between them. Aedeagus apically hooked or at least strongly curved ( U. incognita and U. unicolor similar). Epiphallus membranous, thus variable in shape, never very large or complex. Lateral ejaculatory apodeme very large, protruding beyond epiphallic complex in ventral view ( U. incognita and U. unicolor similar). Basal ejaculatory apodeme longer than aedeagus ( U. incognita and U. unicolor share this character). Gonostylus relatively simple, curved with basal internal blunt process more or less developed.
Discussion. External characters are very diverse, and do not help confirm the monophyly of this group. The occiput can be both densely dusted and entirely shining, some have relatively long vestiture, others are close to being hairless on the mesonotum, most are entirely dark in colour but U. transcaspica is boldly marked with yellow.
The species which show the greatest affinity with the U. lata group are U. incognita Paramonov and U. unicolor Loew , a sibling pair. Both of these have several features of the male genitalia that could place them within the U. lata group. However, the most diagnostic character of the U. lata group, the pigmented vaginal plate, is not present in U. unicolor (female U. incognita not certainly known).
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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Usiini |
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