Atatina albida Bartz & Decaens 2024, n. sp.
Bibliographic record
Abstract
Atatina albida Bartz & Decaëns, n. sp. (Fig. 16) urn:lsid:zoobank.org:act: A7BC66DF-5196-4FC2-9D83-3029CDEF9D45 TYPE MATERIAL. — Holotype. French Guiana • Adult; Tumuc-Humac, Mitaraka Massif, slope forest on DIADEMA project D trail, in decaying trunk; 2°13’40”N, 54°27’14”W; 339 m a.s.l.; III.2015; T. Decaëns, E. Lapied leg.; BOLD Sample ID: EW-MI15-0271; MNHN. Paratypes. French Guiana • 1 adult specimen; Tumuc-Humac, Mitaraka Massif, Heliconia forest near plateau forest at base camp; 2°13’50”N, 54°26’57”W; 351 m a.s.l.; III.2015; T. Decaëns, E. Lapied leg.; BOLD Sample ID: EW-MI15-0052; CEFE • 1 adult specimen; Tumuc-Humac, Mitaraka Massif, lowland forest on DIADEMA project C trail; 2°14’16”N, 54°26’56”W; 310 m a.s.l.; III.2015; T. Decaëns, E. Lapied leg.; BOLD Sample ID: EW-MI15-0226; CEFE • 1 adult specimen; Tumuc-Humac, Mitaraka Massif, lowland forest on DIADEMA project D trail; 2°13’58”N, 54°27’7”W; 318 m a.s.l.; III.2015; T. Decaëns, E. Lapied leg.; BOLD Sample ID: EW-MI15-0306; MNHN • 1 adult specimen; Tumuc-Humac, Mitaraka Massif, plateau forest at base camp; 2°14’2”N, 54°27’1”W; 331 m a.s.l.; III.2015; T. Decaëns, E. Lapied leg.; BOLD Sample ID: EW-MI15-0368; MNHN • 1 adult specimen; Tumuc-Humac, Mitaraka Massif, slope forest on DIADEMA project D trail; 2°13’40”N, 54°27’14”W; 339 m a.s.l.; III.2015; T. Decaëns, E. Lapied leg.; BOLD Sample ID: EW-MI15-0270; MNHN • 5 adult specimens; Tumuc-Humac, Mitaraka Massif, transition forest # 2 Sommet en Cloche Inselberg; 2°13’59”N, 54°27’34”W; 395 m a.s.l.; III.2015; T. Decaëns, E. Lapied leg.; BOLD Sample ID: EW-MI15-0121, EW-MI15-0122, EW-MI15-0123, EW-MI15-0124, EW-MI15-0125; MNHN. OTHER MATERIAL EXAMINED. — French Guiana • 1 juvenile specimen; Tumuc-Humac, Mitaraka Massif, transition forest # 2 Sommet en Cloche Inselberg; 2°13’59”N, 54°27’34”W; 395 m a.s.l.; III.2015; T. Decaëns, E. Lapied leg. (1 specimens); BOLD Sample ID: EW-MI15-0126; MNHN. ETYMOLOGY. — This species is named after its lack of pigmentation. ECOLOGY. — Atatina albida Bartz & Decaëns, n. sp. has been found in a range of ecosystems including lowland, slope, plateau, transition and Heliconia forests (Fig. 16D). It has been observed in the organo-mineral soil (75% of specimens) and in decaying trunks (25% of specimens) (Fig. 16G). DISTRIBUTION. — Atatina albida Bartz & Decaëns, n. sp. is only known from the Mitaraka Massif. DESCRIPTION External morphology (Fig. 16A, B) Body shape cylindrical. Body pigmentation absent. Body length: 25 mm in the holotype, 24 to 41 mm in the paratypes (average: 31.3 mm; n = 3), after ethanol fixation. Body mass: 0.07 mm after ethanol fixation in the holotype, 0.06 to 0.15 g in the paratypes (average: 0.11 g; n = 3). Diameter: 1.5 to 2.0 mm in the preclitellar region, 1.5 to 2.1 mm in the clitellum, 1.5 to 2.4 mm in the postclitellar region. Number of segments: 167 in the holotype, 119 to 299 in the paratypes (average: 194; n = 3). Prostomium proepilobic. One pair of longitudinal grooves passing through segments I-II in line of nephridial pores. Setae widely paired. Setal arrangement aa:ab:bc:cd:dd = 2:1:3:1:12. Clitellum in XV-XXIV, saddle-shaped (Fig. 16A). Genital markings observed in some specimens in VII to VIII (ab position). Tubercula pubertatis linear XVII-XXIV (Fig. 16B). Male pores, ovipores, and spermathecal pores not recognised. Nephridial pores begining in XIV in CD line. Internal anatomy (Fig. 16C) Septa: slightly thickened in 6/7 to 9/10, otherwise membranous. Gizzard: muscular and well developed in VI, with an average size (width × length) of 1.30 × 1.03 mm. Calciferous glands: four pairs forming simple expansions of the esophageal walls in IX-XII, apparently of glandular structure but not isolated from the gut lumen by having a distinct connecting duct. Esophagus-intestine transition in XVIII. Typhlosole begining in XXII, small folded lamella. Hearts: last two intestinal pairs in IX and X. Excretory apparatus holoic.Testes: in XI; mid-ventral metandric. Seminal vesicles: one pair in XI, extending posteriously to XXXX-LX. Spermathecae: two pairs in VIII and IX. REMARKS Atatina albida Bartz & Decaëns, n. sp. differs from Atatina gatesi (Righi & Ayres, 1978) and Atatina puba (Righi, 1971), the only other known species in the genus, in the position of the clitellum and tubercula pubertatis, as well as in the presence of two pairs of spemathecae instead of one in these two relatives (Righi 1971; Righi et al. 1978). It shares with A. gatesi the presence of four pairs of calciferous glands, but their position is different (at IX-XII in A. albida Bartz & Decaëns, n. sp. vs. XI-XIV in A. gatesi). It also shares with A. puba the presence of a single pair of seminal vesicles in XI. This species corresponds to OTU#074 in Maggia et al. (2021).
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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) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.002 | 0.002 |
| Science and technology studies | 0.004 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.027 | 0.008 |
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".