Macrostomus furcatus Rafael & Cumming, 2009, n. sp.
Bibliographic record
Abstract
Macrostomus furcatus, n. sp. (Figs. 5a–j, 9) Diagnosis. Thorax, abdomen and legs predominantly yellow; postcranium black with gray pruinescence; male tergite 8 with blunt distal forked projection. Female hind tibia with pinnate scales along most of dorsal surface and ventral basal third. Description. Holotype male. Frons approximately half anterior ocellus width. Face slightly wider than frons only at ventral margin. Postcranium black. Antenna black with pedicel yellowish. Palpus yellow. Thorax shining yellow with yellow to gray-brown pruinescence. Setae: 4 dorsocentrals; 1 supra-alar presutural; 2 pairs of scutellars; 3-5 antepronotals; 1–3 tiny proepisternals; 3–5 katatergitals. Legs shining yellow with apex of mid and hind femora, apex of hind tibia and all tarsi black, except fore and mid tarsomere 1 mostly yellow and fore tarsomeres 1–3 white distally. Mid tibia with two slightly stout dorsal setae at median third; hind tibia with 4–5 slender dorsal setae; first hind tarsomere with three longer dorsal setae. Wing with costal and apical margin brown infuscated (Fig. 5a). Halter dark yellow to brown. Abdomen shining yellow with black terminalia. Tergite 8 (Fig. 5b) with blunt bifid distal projection. Epandrium with anterodorsal and posterodorsal protuberances of subequal length (Fig. 5c). Anterior cercus somewhat elongate; posterior cercus rounded distally, with a few anterodorsal setae and two internal protuberances, one longer and apparently bifid anteriorly and other small and simple posteriorly (Figs. 5d–e). Hypandrium (Fig. 5f) with a few setae medially and paired serrated protuberances distally. Size. Body length 3.1 mm; wing length 3.2 mm. Female. Frons slightly wider than anterior ocellus width; face narrower than frons, approximately one third anterior ocellus width. First hind tarsomere with one longer dorsal seta; hind tibia with pinnate scales on most of dorsal surface and ventrally on basal third. Wing wider than in male, more brown infuscated (Fig. 5g). Terminalia black sparsely gray pruinose. Tergite 8 and sternite 8 as in Figs. 5h–i. Genital fork as in Fig. 5j. Internal egg oval. Size. Body length 3.2 mm; wing length 3.3 mm. Geographical records. Brazil (Amazonas, Acre states), Fig. 9. Material. Holotype ♂: BRASIL, Amazonas, Pq [Parque] Nac [ional] [do] Jau, Seringal, 27.iv–03.v.1995 / / arm[adilha] Malaise, J.A. Rafael & J.[F.] Vidal (INPA). Paratypes: same data as holotype (1♀ INPA); Pq. Nac. Jau, Rio Jau, Seringalzinho, 015028S–613523W, 01.viii.1995, varredura, J.A. Rafael & J. Vidal (1♂ INPA, in glycerin); Igarapé Miratucu, Ig. do Gerlei, 015700S–614900W, 23–28.vii.1985, arm. Malaise, J.A. Rafael & J.Vidal (1♀ INPA, in glycerin); S. Izabel do R. Negro, Maturacá, 11–13.x.1990, arm. Malaise, J.A. Rafael (1♂ CNC); Acre, Cruzeiro do Sul, Rio Moa, 073702S–724615W, 15–28.xi.1996, varredura, mata, J.A. Rafael, J. Vidal & R. L. Menezes (1♂ CNC). Holotype condition. Good, not dissected. Etymology. From Latin furca = fork, in reference to the furcated projection of male tergite 8. Discussion. Macrostomus furcatus differs from all other species of the M. ferrugineus species-group by tergite 8 ending in a blunt bifid distal projection, by the shape of the posterior lobe of the cercus, and by the serrated apex of the hypandrium.
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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 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.002 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.007 | 0.002 |
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".