A Taxonomic Study on the Newly-Record Genus Megathrips (Thysanoptera: Phlaeothripidae) from China
Bibliographic record
Abstract
In the present paper one new record genus, one new record species and a new species of the genus Megathrips from China are described. A key to Chinese species of the geuns Megathrips is provided. The type specimens are deposited in Baotou Landscape Research Institute of Inner Mongolia (BLRI). Megathrips Targioni-Tozzetti, rec. nov. Megathrips Targioni-Tozzetti, 1881, Annali di Agricoltura, parte Scientifica, 34: 120. Type species: Megathrips piccioli Targioni-Tozzetti, 1881. Head elongate, less than 2.5 times as long as across eyes wide and scrulptured transversely behind compound; interocellar, postocular and mid dorsal head setae well developed, interocellar setae is the longest; cheeks with several pairs of capitate spins. Antennae eight-segmented, segment Ⅲ elongate, segment Ⅷ lanceolate. Moth cone broadly rounded; maxillary stylets fairly long, when at rest retracted to the middle of the head, spaced fairly wide apart, not touching in the center of the head. Basantra present; major prothoracic setae well developed; anterolateral setae displaced from anterior margin toward midlateral setae. Foretarsal tooth absent in female and with a minute tooth in male. Forewings broad, with accessory setae and basal wing bristles. Pelta with broad lateral lobs connected narrowly and sculptured, without pore; anterior pair of wing-retaining setae on each tergite reduced. Abdominal tergite Ⅵ in the male with a pair of long, tubular lateral processes and Ⅷ with lateral spines; abdominal tergite Ⅸ with major posterior setae less than one-third as long as tube long, hair; tube (tergite Ⅹ) long, hair; anal setae much sort than tube. The genus is similar to Megalothrips, but can be distinguished from the latter by: 1) the close placement of the anterolateral setae to the mindlateral setae; 2) the widely spaced maxillary stylets. Distribution: American (California, south and west to Colorado, Minnesota, northern Illinois), Australia, Canada, New England, Korea, Iraq (Crete); Europe.1. Megathrips lativentris, rec. nov. (Fig.1) Phloeothrips lativentris Heeger, 1852: 473; Priesner 1920: 1, 1928: 672; Stannard, 1968: 522; Mound et Palmer, 1983: 78. Specimens examined: 1♂2♀♀, Baiyun Mountain, Songxian County, Henan Province, 1 480~1 620 m, 16-Ⅶ-1996, grass, coll. DUAN Ban-suo; 1♀, Baiyun Mountain, Songxian County, Henan Province, 1 420 m, 17-Ⅶ-1996, grass, coll. DUAN Ban-suo. 2. Megathrips antennatus, sp. nov. (Fig.2) The new species is similar to M. lativentris, but can be distinguished from the latter by: 1) abdominal pelta Ⅰis divided three part, two lateral lobe completely separated from the center pelta; 2) fore femora brown; However, M. lativentris, 1) abdominal pelta Ⅰnot divided into three part, two lateral lobe connect narrow of the center pelta; 2) fore femora black. Holotype: ♀ (BIRL), Longyuwan, Funiu Mountain, Henan Province, 1 045 m, 10- Ⅶ -1996, grass, coll. DUAN Ban-Suo; Paratypes: 1 ♀ , Longyuwan, Funiu Mountain, Henan Province, 1 220 m, 12-Ⅶ-1996, corn, coll. DUAN Ban-Suo; 1♀, Longyuwan, Funiu Mountain, Henan Province, 870 m, 12- Ⅶ -1996, grass, coll. DUAN Ban-Suo; 1♀(NWSUAF), Jigong Mountain, Henan Province, 12-Ⅶ-1997, grass, coll. FENG Ji-Nian.
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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 | 0.002 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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 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".