Phymatodes obliquus Casey, NEW STATUS
Bibliographic record
Abstract
Phymatodes obliquus Casey, NEW STATUS (Figs 26, 27) Phymatodes obliquus Casey, 1891:26. Type locality: California, USA. USNM Phymatodes harfordi Casey, 1912:279. Type locality: Santa Clara County, California, USA. USNM Phymatodes decussatus var. obliquus, Hardy and Preece, 1926:28 Phymatodes decussatus var. latifasciatus Hardy and Preece, 1927:191. Type locality: Mt. Tolmie, Victoria Island, British olumbia, Canada. CNC Phymatodes decussatus var. posticus Van Dyke, 1920:36; Linsley, 1964:51. Type locality: Camp Nelson, Tulare County,California, USA. CASC NEW SYNONYMY Phymatodes decussatus australis Chemsak, 1963:40. Type locality: Ensanada, Baja California, Mexico. CASC NEW SYNONYMY Phymatodes obliquus is the oldest name to replace the taxon in Linsley’s (1964) concept of P. decussatus (see the discussion of P. decussatus as well). Phymatodes obliquus can be distinguished from similar species, such as P. decussatus (as defined herein), by its non-setose white fasciae, which are arcuate, rather than angulate; the elytral pubescence, which is long, erect, golden and white in P. decussatus, and short, subappressed, and dark in P. obliquus; and the upper eye lobe, which is contiguous with the lower lobe by at least four rows of omatidia, while in P. decussatus most specimens have only a sclerotized line, lacking ommatidia. This west coast species is similar to P. v a r i u s (Fabricius) from the eastern US, and few salient characters have been found to separate the two species. The most consistent differences are the extent of the white fasciae on the elytra, wherein P. v a r i u s possesses more expansive markings while in P. obliquus they are somewhat reduced. The basal pair is also more transverse in the former species, and more arcuate in the latter. Additionally, P. v a r i u s generally has more dense, dark setae at the elytral base, whereas in P. obliquus the setae are less dense and somewhat lighter. Both of these characters are difficult to interpret when examining a single specimen or even small series. Nevertheless, based on these minor differences, as well as the fact that the two populations appear to be allopatric, the two species are herein retained. However, future analyses may prove these taxa indistinct. The subspecies previously assigned to P. obliquus (P. decussatus sensu Chemsak), are highly variable as has been noted by several authors (Hovore and Giesbert 1976, Swift 2008). In southern California, specimens exhibiting characters of both subspecies have been reared from the same logs, and long series from any region vary widely in form and coloration. Thus, it seems best to treat this species as a single highly variable taxon. This species as well as P. v a r i u s, P. dimidiatus, and P. vulneratus have pronounced sexual dimorphism. The metathoracic legs are longer and more robust in males; and the pronotum is broadly rounded at the sides in males, while in the females it is feebly angulate. These four species also share similar gland pore arrays on the anterior margin and pleura of the pronotum. Specimens examined: 326, including the types of P. obliquus, P. d. posticus, and P. d. australis
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.002 | 0.001 |
| Science and technology studies | 0.003 | 0.002 |
| Scholarly communication | 0.001 | 0.003 |
| Open science | 0.001 | 0.002 |
| Research integrity | 0.001 | 0.002 |
| Insufficient payload (model declined to judge) | 0.023 | 0.007 |
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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".