A Phylogenetic Revision of Minyomerus Horn, 1876 and Piscatopus Sleeper, 1960 (Curculionidae: Entiminae: Tanymecini: Tanymecina)
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Bibliographic record
Abstract
abstract: A phylogenetic revision of the broad-nosed weevil genera Minyomerus Horn, 1876, and Piscatopus Sleeper, 1960 (Entiminae: Tanymecini) is presented. These genera are distributed throughout western North America, from Canada to Mexico and Baja California, primarily in arid and desert habitats, and feed on shrubs such as creosote (Larrea tridentata (DC.) Coville: Zygophyllaceae) and several Asteraceae. Piscatopus was considered monotypic, comprised solely of P. griseus Sleeper, 1960, whereas Minyomerus formerly was comprised of seven species: M. innocuus Horn, 1876 (designated as the type species for Minyomerus in Pierce, 1913), M. caseyi (Sharp, 1891), M. conicollis Green, 1920, M. constrictus (Casey, 1888), M. languidus Horn, 1876, M. laticeps (Casey, 1888), M. microps (Say, 1831). This revision includes comprehensive redescriptions of the previously described species in these genera and descriptions of ten new species: M. imberbus sp. nov., M. caponei sp. nov., M. reburrus sp. nov., M. cracens sp. nov., M. trisetosus sp. nov., M. puticulatus sp. nov., M. bulbifrons sp. nov., M. politus sp. nov., M. gravivultus sp. nov., and M. rutellirostris sp. nov. A cladistic analysis using 46 morphological characters of 22 terminal taxa (5 outgroup, 17 ingroup) was carried out in WinClada and yielded a single most-parsimonious cladogram (length = 82, consistency index = 65, retention index = 82). The monophyly of Minyomerus is supported by the preferred cladogram. The results of the cladistic analysis place Piscatopus griseus within the genus Minyomerus as sister to M. rutellirostris. Therefore, Piscatopus is demoted to a junior synonym of Minyomerus and its sole member P. griseus, is moved to Minyomerus as M. griseus (Sleeper), new combination. Additionally, the species M. innocuus Horn, 1876 is demoted to a junior synonym of M. microps (Say, 1831), based on the principle of priority, and M. microps is elevated to the rank of type for the genus. The species M. languidus, M. microps, and M. trisetosus are putatively considered parthenogenetic, and lack male specimens over a broad range of sampling events. The diversity in exterior and genitalic morphology, range of host plants, overlapping species distributions, and geographic extent suggests an origin during the Miocene (~15 mya).
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.000 | 0.002 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it