Emblyna chitina Chamberlin & Gertsch 1958
Bibliographic record
Abstract
Emblyna chitina (Chamberlin & Gertsch 1958) (Figs 9–13) Material examined.— Canada: Québec: BaieJames (Jamésie): Villebois [49°01’N, 79°08’W] 15.–22.vi.1997, flight interception trap in mature Black spruce forest, 1Ψ, P. Paquin & N. Dupérré (CPAD); BaieJames (Jamésie): Villebois [49°01’N, 79°08’W] 22.– 29.vi.1997, flight interception trap in mature Black spruce forest, 1Ψ, P. Paquin & N. Dupérré (CPAD); BaieJames (Jamésie): Villebois [49°01’N, 79°08’W] 06.–13.vii.1997, flight interception trap in mature Black spruce forest, 2Ψ, P. Paquin & N. Dupérré (CPAD); BaieJames (Jamésie): Villebois [49°01’N, 79°08’W] 13.–20.vii.1997, flight interception trap in mature Black spruce forest, 1Ψ, P. Paquin & N. Dupérré (CPAD); BaieJames (Jamésie): Villebois [49°01’N, 79°08’W] 03.–10.viii.1997, flight interception trap in mature Black spruce forest, 2Ψ, P. Paquin & N. Dupérré (CPAD); BaieJames (Jamésie): 86 km N LaSarre [49°29’N, 79°17’W] 20.–27.vii.1997, flight interception trap in old growth Black spruce forest, 2Ψ, P. Paquin & N. Dupérré (CPAD); BaieJames (Jamésie): 87 km N LaSarre [49°32’N, 79°20’W] 15.–22.vi.1997, Malaise/flight interception trap (pan) in old growth Black spruce forest, 1Ψ, P. Paquin & N. Dupérré (CPAD); BaieJames (Jamésie): 87 km N LaSarre [49°32’N, 79°19’W] 06.–15.vi.1997, flight interception trap in old growth Black spruce forest, 1Ψ, P. Paquin & N. Dupérré (CPAD); BaieJames (Jamésie): 87 km N LaSarre [49°32’N, 79°19’W] 15.–22.vi.1997, flight interception trap in old growth Black spruce forest, 1Ψ, P. Paquin & N. Dupérré (CPAD); BaieJames (Jamésie): 87 km N LaSarre [49°32’N, 79°19’W] 22.–29.vi.1997, flight interception trap in old growth Black spruce forest, 2ɗ, P. Paquin & N. Dupérré (CPAD); BaieJames (Jamésie): 87 km N LaSarre [49°32’N, 79°19’W] 13.–20.vii.1997, flight interception trap in old growth Black spruce forest, 1Ψ, P. Paquin & N. Dupérré (CPAD); BaieJames (Jamésie): 87 km N LaSarre [49°32’N, 79°20’W] 04.viii.1997, Berlese extraction from old growth Black spruce forest, 1Ψ, P. Paquin & N. Dupérré (CPAD); BaieJames (Jamésie): 88 km N LaSarre [49°33’N, 79°18’W] 22.–29.vi.1997, flight interception trap in mature Black spruce forest, 1Ψ, P. Paquin & N. Dupérré (CPAD); BaieJames (Jamésie): 88 km N LaSarre [49°33’N, 79°18’W] 20.–27.vii.1997, flight interception trap in mature Black spruce forest, 1Ψ, P. Paquin & N. Dupérré (CPAD); BaieJames (Jamésie): 88 km N LaSarre [49°33’N, 79°18’W] 27.vii.–03.viii.1997, flight interception trap in mature Black spruce forest, 2Ψ, P. Paquin & N. Dupérré (CPAD); BaieJames (Jamésie): 89 km N LaSarre [49°33’N, 78°59’W] 06.–15.vi.1997, flight interception trap in mature Black spruce forest, 1Ψ, P. Paquin & N. Dupérré (CPAD); BaieJames (Jamésie): 89 km N LaSarre [49°33’N, 78°59’W] 29.vi.–06.vii.1997, flight interception trap in mature Black spruce forest, 1Ψ, P. Paquin & N. Dupérré (CPAD); BaieJames (Jamésie): 91 km N LaSarre [49°35’N, 79°17’W] 13.–20.vii.1997, flight interception trap in old growth Black spruce forest, 2Ψ, P. Paquin & N. Dupérré (CPAD); BaieJames (Jamésie): 95 km N LaSarre [49°36’N, 79°18’W] 13.–20.vii.1997, flight interception trap in old growth Black spruce forest, 1Ψ, P. Paquin & N. Dupérré (CPAD); BaieJames (Jamésie): 98 km N LaSarre [49°37’N, 79°17’W] 06.–15.vi.1997, flight interception trap in mature Black spruce forest, 2ɗ, 1Ψ, P. Paquin & N. Dupérré (CPAD); BaieJames (Jamésie): 98 km N LaSarre [49°37’N, 79°17’W] 15.–22.vi.1997, flight interception trap in mature Black spruce forest, 1ɗ 1Ψ, P. Paquin & N. Dupérré (CPAD); BaieJames (Jamésie): 98 km N LaSarre [49°37’N, 79°17’W] 22.–29.vi.1997, flight interception trap in mature Black spruce forest, 1ɗ 1Ψ, P. Paquin & N. Dupérré (CPAD); BaieJames (Jamésie): 122 km NNE LaSarre [49°48’N, 78°54’W] 15.–22.vi.1997, flight interception trap in mature Black spruce forest, 2ɗ, P. Paquin & N. Dupérré (CPAD); BaieJames (Jamésie): 122 km NNE LaSarre [49°48’N, 78°54’W] 22.–29.vi.1997, flight interception trap in mature Black spruce forest, 1ɗ 1Ψ, P. Paquin & N. Dupérré (CPAD); BaieJames (Jamésie): 122 km NNE LaSarre [49°48’N, 78°54’W] 29.vi.–06.vii.1997, flight interception trap in mature Black spruce forest, 2Ψ, P. Paquin & N. Dupérré (CPAD); BaieJames (Jamésie): 122 km NNE LaSarre [49°48’N, 78°54’W] 13.–20.vii.1997, flight interception trap in mature Black spruce forest, 1Ψ, P. Paquin & N. Dupérré (CPAD); BaieJames (Jamésie): 122 km NNE LaSarre [49°48’N, 78°54’W] 20.–27.vii.1997, flight interception trap in mature Black spruce forest, 1Ψ, P. Paquin & N. Dupérré (CPAD); BaieJames (Jamésie): 122 km NNE LaSarre [49°48’N, 78°54’W] 27.vii.–03.viii.1997, flight interception trap in mature Black spruce forest, 2Ψ, P. Paquin & N. Dupérré (CPAD); BaieJames (Jamésie): 122 km NNE LaSarre [49°48’N, 78°54’W] 24.–31.viii.1997, flight interception trap in mature Black spruce forest, 1Ψ, P. Paquin & N. Dupérré (CPAD); BaieJames (Jamésie): 122 km NNE LaSarre [49°48’N, 78°51’W] 06.–15.vi.1997, flight interception trap in old growth Black spruce forest, 1Ψ, P. Paquin & N. Dupérré (CPAD); BaieJames (Jamésie): 122 km NNE LaSarre [49°48’N, 78°51’W] 15.–22.vi.1997, flight interception trap in old growth Black spruce forest, 1ɗ, 2Ψ, P. Paquin & N. Dupérré (CPAD); BaieJames (Jamésie): 122 km NNE LaSarre [49°48’N, 78°51’W] 22.–29.vi.1997, flight interception trap in old growth Black spruce forest, 1ɗ, P. Paquin & N. Dupérré (CPAD); BaieJames (Jamésie): 122 km NNE LaSarre [49°48’N, 78°51’W] 27.vii.–03.viii.1997, flight interception trap in old growth Black spruce forest, 1Ψ, P. Paquin & N. Dupérré (CPAD); BaieJames (Jamésie): 122 km NNE LaSarre [49°48’N, 78°51’W] 20.–27.vii.1997, flight interception trap in old growth Black spruce forest, 1Ψ, P. Paquin & N. Dupérré (CPAD); BaieJames (Jamésie): 122 km NNE LaSarre [49°48’N, 78°52’W] 13.–20.vii.1997, flight interception trap in regenerating Black spruce forest, 4Ψ, P. Paquin & N. Dupérré (CPAD); BaieJames (Jamésie): 119 km N LaSarre [49°49’N, 79°01’W] 06.–15.vi.1997, Malaise/ flight interception trap (pan) in mature Black spruce forest, 2ɗ, P. Paquin & N. Dupérré (CPAD); BaieJames (Jamésie): 119 km N LaSarre [49°49’N, 79°01’W] 15.–22.vi.1997, Malaise/flight interception trap (pan) in mature Black spruce forest, 1ɗ 1Ψ, P. Paquin & N. Dupérré (CPAD); BaieJames (Jamésie): 119 km N LaSarre [49°49’N, 79°01’W] 22.– 29.vi.1997, Malaise/flight interception trap (pan) in mature Black spruce forest, 1ɗ, P. Paquin & N. Dupérré (CPAD); BaieJames (Jamésie): 119 km N LaSarre [49°49’N, 79°01’W] 29.vi.–06.vii.1997, Malaise/flight interception trap (pan) in mature Black spruce forest, 1Ψ, P. Paquin & N. Dupérré (CPAD); BaieJames (Jamésie): 119 km N LaSarre [49°49’N, 79°01’W] 10.–17.viii.1997, Emergence cage (head) in mature Black spruce forest, 1Ψ, P. Paquin & N. Dupérré (CPAD); BaieJames (Jamésie): 119 km N LaSarre [49°49’N, 79°00’W] 06.–15.vi.1997, flight interception trap in mature Black spruce forest, 1ɗ, P. Paquin & N. Dupérré (CPAD); BaieJames (Jamésie): 119 km N LaSarre [49°49’N, 79°00’W] 15.–22.vi.1997, flight interception trap in mature Black spruce forest, 1ɗ, P. Paquin & N. Dupérré (CPAD); BaieJames (Jamésie): 119 km N LaSarre [49°49’N, 79°00’W] 22.–29.vi.1997, flight interception trap in mature Black spruce forest, 1Ψ, P. Paquin & N. Dupérré (CPAD); BaieJames (Jamésie): 119 km N LaSarre [49°49’N, 79°00’W] 29.vi.–06.vii.1997, flight interception trap in mature Black spruce forest, 1Ψ, P. Paquin & N. Dupérré (CPAD); BaieJames (Jamésie): 119 km N LaSarre [49°49’N, 79°00’W] 27.vii.–03.viii.1997, flight interception trap in mature Black spruce forest, 1Ψ, P. Paquin & N. Dupérré (CPAD); BaieJames (Jamésie): 119 km N LaSarre [49°49’N, 79°00’W] 06.–13.vii.1997, flight interception trap in mature Black spruce forest, 1Ψ, P. Paquin & N. Dupérré (CPAD); BaieJames (Jamésie): 119 km N LaSarre [49°49’N, 79°00’W] 06.–15.vi.1997, flight interception trap in mature Black spruce forest, 1Ψ, P. Paquin & N. Dupérré (CPAD); BaieJames (Jamésie): 128 km NNE LaSarre [49°50’N, 78°41’W] 06.–15.vi.1997, flight interception trap in old growth Black spruce forest, 3ɗ, P. Paquin & N. Dupérré (CPAD); BaieJames (Jamésie): 128 km NNE LaSarre [49°50’N, 78°41’W] 20.–27.vii.1997, flight interception trap in old growth Black spruce forest, 1Ψ, P. Paquin & N. Dupérré (CPAD). Diagnosis.— Males of E. chitina are characterised by the embolic loop enlarging ectally (Fig. 9), the tip of embolus (E) coming out of the tegular apophysis (TEGA sensu Bennett 2005) at a right angle (Figs 9–10), a palpal tibia rather long and thin (Fig. 9), a nonRTA palpal tibial apophysis (sensu Bennett 2005) with two small and elongate ctenidia (CT) (Fig. 11). Females are characterised by the carinate lateral fovea forming a broad median septum (MS) slightly narrowing anteriorly (Fig. 12), a shallow and inconspicuous atrium (AT) with two small rounded spermathecae (S) touching medially, not always visible through the cuticle (Fig. 12), and fertilisation ducts (FD) originating apically from the spermathecae (S) (Fig. 13). Distribution.— Transcontinental boreal species. Remark.— Emblyna chitina is morphologically similar to Emblyna peragrata and the two species have been confused in the past. Recent examination of representatives of both species by D.J. Buckle (pers. comm.) shed light on the problem. We have studied the specimens curated at the CNC and our own records (given above) and confirm his findings. This allows us to clarify the distribution of the two species. Emblyna chitina is a widespread boreal species, found from Alaska, British Columbia to Québec, while E. peragrata is restricted to the West Coast of British Columbia. Chamberlin & Gertsch (1958) list "one female, probably this species" from Rousseau Bay, Tchapahipane Is., Québec in the list of localities given for E. peragrata. Fortunately, this record was overlooked by all authors who treated the spiders of Québec as it now appears erron
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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 | 0.002 | 0.001 |
| Scholarly communication | 0.001 | 0.002 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.040 | 0.012 |
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".