Sclerocoelus mandibulum Kuwahara, Marshall & Paiero, 2025, sp. nov.
Notice bibliographique
Résumé
Sclerocoelus mandibulum sp. nov. urn:lsid:zoobank.org:act: 624EB012-8E65-42D5-A039-FF8A9 CAD 323F Figs 7H, 84–86 Etymology This name refers to the male postgonite which, in lateral view, strongly resembles the mandible of a rodent (from the Latin ‘ mandibulum ’, meaning ‘jaw’). Material examined Holotype ECUADOR • ♂; Pichincha, Cotopaxi National Park, Quebrada Mishahuaycu; 3600 m a.s.l.; 26 Oct.–8 Nov. 1999; S.A. Marshall leg.; along stream, pan traps; QCAZ debu00139611. Paratypes BOLIVIA – La Paz • 1 ♂; Mapac, Lago Titicaca; 16°10′ S, 69°5′ W; 23 Apr. 1997; L. Masner leg.; CBFC. ECUADOR – Carchi • 1 ♂; Cerro Pelado; 3200 m a.s.l.; 25 Jun. 1965; L.E. Peña leg.; CNCI • 1 ♂; Páramo, 14.1 km NW of El Angel; 3450 m a.s.l.; 1 Nov. 1999; S.A. Marshall leg.; under Polylepis litter; DEBU • 1 ♂; Troya; 2950 m a.s.l.; 11–13 Jun. 1965; L.E. Peña leg.; CNCI. – Napo • 3 ♂♂; near Lago Papallacta; 6 Nov. 1999; S.A. Marshall leg.; under tree branches (brown leaves); QCAZ. – Pichincha • 20 ♂♂, 5 ♀♀; same data as for holotype; DEBU • 21 ♂♂, 5 ♀♀; same data as for holotype; QCAZ. Description BODY (Fig. 84A). Length 3.1–4.1 mm. Head dark brown, lower fifth of frons orange; face and gena brown; pedicel brown, postpedicel orange. Frontal width 2.2× frontal height. Three pairs of interfrontal bristles, middle pair largest; anterior orbital 0.5× length of posterior. Palpus brown. Eye large, greatest height about 3.5× shortest genal height. Thorax brown, scutum with paler lateral edges. Two pairs of dorsocentral bristles (anterior pair distinct, 0.5× length of posterior pair) separated by 6–7 rows of acrostichal setulae. Membrane around prosternum bare. Legs brown, hind tibia darker. Fore femur with four large ventral preapical setae. Dorsal surface of male mid tibia with a strong seta about midlength and a pair of large setae at about four-fifths; dorsal surface of female mid tibia with standard chaetotaxy. Ventral surface of male mid tibia with two rows of stout setae in apical third. Wing (Fig. 7H) slightly infuscate. CS2 subequal to CS3. Halter brown. MALE ABDOMEN (Figs 84B–C, 85). Dark brown, posterior edges of tergites sometimes slightly desclerotized. T2–5 and S2–4 uniformly long-setose with large posterolateral setae. S5 rectangular, 1.0× length and 1.3× width of S4, posterolaterally long-setose and posteromedially emarginate with a broad, dark, rectangular, anteriorly setulose lobe projecting dorsally (into abdomen), emargination with long setae along margin. Anterior flange of S6+7 triangular, 1.0 × as long as wide. Sclerite A not differentiated from S6+7; sclerite B reduced, pale, arched; sclerite C dark, well sclerotized and projecting ventrally off of S6+7; sclerites D and E fused, quadrate with a pale, deflexed left lobe; sclerite F large, thick and flattened with an elongate, angulate apicoventral process on left side; sclerite G very large, rounded, inflated, ring sclerite incorporated into right posterior margin. Epandrium very large, 0.8× length of S8, height 1.6× maximum length and 0.9× maximum width, densely setose, cleft between inner ventral corner and surstylus, and ventral margin projecting ventrally; perianal pads weakly developed. Pseudocercus undifferentiated; halves of subepandrial sclerite very thin, strongly arched, and narrowly contiguous. Subcercus large, with a ventrally bilobed, rectangular posterior part, a broad, rounded inner lobe extending to near anterodorsal corner of surstylus, and a long, dorsally curved, blade-like lobe originating from inner lobe. Hypandrium with thick, dorsoventrally flattened anteromedial apodeme. Surstylus large, curved inwards, somewhat T-shaped with a rectangular, preapical posterior lobe and a triangular apical anteroventral lobe. Postgonite stout, gradually tapered, and apically curved anteriorly. Phallapodeme very large, dorsoventrally flattened; basiphallus dorsoventrally flattened near base, with a large, tapered epiphallus, distal part of basiphallus extending posteroventrally; distiphallus short, largely membranous with a pair of S-shaped ventrolateral sclerites and a V-shaped ventral sclerite. FEMALE ABDOMEN (Fig. 86). T7 broad, simple; T8 divided into a small, pale, dorsal sclerite and two large, dark, lateral sclerites, posterolateral corners rounded. Epiproct pentagonal, posteromedially cleft (almost entirely divided), and entirely setulose. Cercus large, elongate, with large apical, dorsal, and apicoventral setae. S7 broad, broadly desclerotized posteriorly with six large posterior setae; S8 broad, medially pale with dark lateral edges bent ventrolaterally. Two spermathecae, bulb elongate, bean-shaped, finely striate with a wide, deep invagination on thicker end. Distribution Neotropical: Bolivia, Ecuador. Remarks Sclerocoelus mandibulum sp. nov. is an unusual species, with an elaborate subcercus superficially similar to the S. regularis group. However, the subcercus is fused to the epandrium and there is no trace of a pseudocercus. Sclerocoelus mandibulum also resembles S. penai sp. nov., another alpine species, in having a large subcercus with a strong inner lobe and a dark, microsetulose process posterior to the posteromedial setulose patch of the male S5, but it is distinguished by the larger size, hammer-shaped surstylus, and uniquely-shaped postgonite. It cannot be confidently placed in any of the named species groups.
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
Comment cette classification a été obtenuedéplier
Prédiction machine sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Le volet Gemma est une étiquette directe du modèle pour chaque travail de la base, lue sur la notice réduite au titre. Le volet Codex est un classifieur appris des 10 348 étiquettes directes de Codex et calibré sur les taux pondérés de l'échantillon; les champs sans appui suffisant ne portent aucun appel Codex. Le mode candidate est l'union des deux volets; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont pas des étiquettes humaines.
Scores du classifieur distillé par catégorie (deux têtes)
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 0,001 |
| Méta-épidémiologie (sens strict) | 0,001 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,003 | 0,002 |
| Études des sciences et des technologies | 0,002 | 0,001 |
| Communication savante | 0,001 | 0,001 |
| Science ouverte | 0,001 | 0,001 |
| Intégrité de la recherche | 0,001 | 0,001 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,009 | 0,005 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule source (Gemma direct ou Codex distillé), pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».