Wellsomina, Cartwright, David I., 2010
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publication ID |
https://doi.org/ 10.5281/zenodo.194387 |
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DOI |
https://doi.org/10.5281/zenodo.6202138 |
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persistent identifier |
https://treatment.plazi.org/id/AA598020-1868-FF91-9DE8-3CFBFDAD1E38 |
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treatment provided by |
Plazi |
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scientific name |
Wellsomina |
| status |
gen. nov. |
Genus Wellsomina gen. nov.
Type species. Wellsomina stuarti sp. nov. by original designation, from the Northern Territory, Australia.
Diagnosis. Forewings each with forks 2, 3, 4 and 5, both forks 2 and 3 relatively short and with long footstalks, and hind wings each with humeral lobe and forks 2, 3 and 5 present, fork 2 relatively short with long footstalk and fork 3 shorter than footstalk. In male genitalia, superior appendages relatively short, complex; inferior appendages fused basally, usually with pair of processes distally. In female genitalia, abdominal sternite VIII basally has a single slender or robust mesal process; segment X is relatively long, usually forming a slender ovipositor.
Description. Smallish adults, head dorsally with occipital warts aligned transversely; scutellum with oval scutal wart ( Fig. 8 View FIGURES 7 – 11 ). Length of forewing: male 2.4–3.1 mm, female 2.6–3.1 mm. Wing venation: forewings relatively narrow, each with length about 3.3–4.0 times width, R1 divided distally, forks 2, 3, 4 and 5 present, fork 2 relatively short, fork 2 nygma absent, fork 2 footstalk relatively very long, length between 1.4–3.6 times length of cross-vein r -m, length fork 2 ranges from 1.3–2.5 times length of fork 3, fork 3 very short, length fork 3 about 0.5–1.2 times length of footstalk, footstalk fork 3 very long ranges from 2.6–7.0 times length of cross-vein m, cross-veins r -m and m usually contiguous or nearly oppose at footstalk fork 3, discoidal cell closed, length about 3 times width; hind wings relatively narrow, each with length between 3.8– 4.7 times width, forks 2, 3 and 5 present, all relatively short, fork 2 footstalk relatively very long, length range 2.0–5.0 times length of cross-vein r -m, humeral lobe developed, discoidal cell narrow, length about 3 times width, 2 anal veins ( Fig. 7 View FIGURES 7 – 11 ). Male genitalia with superior appendages relatively short, complex with robust spiny setae apically; phallus generally robust, tube- like; inferior appendages depressed, elongate, fused basally and typically with pair of processes distally ( Figs 9, 10 View FIGURES 7 – 11 , 12, 13 View FIGURES 12 – 20 ). Female genitalia with abdominal sternite VIII relatively broad, basally with slender or robust mesal process, with small groups of long hairs distolaterally, segment IX relatively short, broad-based, distally tapered slightly, segment X relatively long, typically forming slender ovipositor tipped by pair of small cerci ( Figs 45–53 View FIGURES 45 – 53 ).
Etymology. Wells - named after Dr Alice Wells, for her contribution to the study of Trichoptera in Australia, combined with part of the generic name Ecnomina .
Remarks. Wellsomina is a widespread northern Australian endemic genus most similar to the species Ecnomina kavinia from New Caledonia ( Ward and Schefter, 2000) which also has relatively short forewing forks 2 and 3 ( Ward and Schefter 2000). Wellsomina species differ from E. kavinia in several hind wing characters including absence of fork 3 in each wing, the presence of a humeral lobe and the relative length of fork 2. The genus comprises 12 species from across northern Australia: northern Western Australia, Northern Territory and northeastern Queensland.
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.