Nonnullidens moiorum, Sartori & Salles, 2025

Sartori, Michel & Salles, Frederico F., 2025, The Leptophlebiidae of New Guinea (Ephemeroptera, Choroterpinae, Thraulini), ZooKeys 1245, pp. 41-175 : 41-175

publication ID	https://doi.org/10.3897/zookeys.1245.141723
publication LSID	lsid:zoobank.org:pub:7160C34D-C437-4469-9A47-91AB5B9DFB05
DOI	https://doi.org/10.5281/zenodo.15923246
persistent identifier	https://treatment.plazi.org/id/897C3C11-0981-5174-8E24-6AB829BA0BA0
treatment provided by	ZooKeys by Pensoft
scientific name	Nonnullidens moiorum
status	sp. nov.

Treatment

Nonnullidens moiorum sp. nov.

Figs 34 I View Figure 34 , 36 C View Figure 36 , 52 View Figure 52 , 53 View Figure 53

Material examined.

Holotype. • Indonesia, Papua, one nymph on slide, Sorong Island , 95 m, 19.II.2006, 00°49.354'S, 131°24.196'E, M. Balke & Tindige col [BH 20], GBIFCH 01223147 ( MZB) GoogleMaps . Paratypes. • Indonesia, Papua, one nymph on slide, GBIFCH 01223148 , one nymph in ethanol, GBIFCH 01523469 same data as holotype ( MZL) GoogleMaps .

Nymph.

Body length, female: 4.5 mm.

Diagnosis.

Femora uniformly dark brown, without transverse bands; tarsal claw with only three teeth; all gills uni-lamellate.

Colouration.

Head. Vertex greyish brown, lighter between ocelli, frons pale brown washed with grey. Antenna yellowish, scape greyish. Mouth parts greyish brown. Thorax. Pronotum medium brown, washed with dark brown laterally, medially, and anteromedially. Mesonotum medium brown, dark brown laterally, with two blackish lines originating from the sides and reaching the posterior margin (Fig. 36 C View Figure 36 ). Femur greyish brown, lighter at base. Tibia yellowish, fore tibia washed with grey apically. Tarsi yellowish. Abdomen. Terga medium brown, a lighter sagittal line increasing in width posteriorly. Sterna yellowish, segments I – VII washed with greyish brown laterally. Gills greyish brown. Terminal filaments yellowish.

Description.

Head. Labrum cordiform (Fig. 52 A View Figure 52 ). Ratio labrum width / clypeus width 1.02. Ratio labrum width / insertion width 1.45. Medial emargination shallow without denticles. Proximal row of setae present, simple. Number of setae on proximal row ~ 30–40. Distal row of setae present, simple. Median part of labrum in ventral view with scattered thin setae (Fig. 52 B View Figure 52 ). Mandibles. Outer margin with row of setae on distal 1 / 2. Ending of the row before incisor. Right mandible with six setae below the mola (Fig. 52 C View Figure 52 ). Maxillae. Posterior margin of cardo broken. Proximo-lateral margin of stipes with one medium size and two short stout setae (Fig. 34 I View Figure 34 ). Apical-ventral row with 20–25 pectinate setae. Maxillary palp segment II 0.76–1.0 as long as segment I. Maxillary palp segment III 0.76–0.9 as long as segment I (Fig. 52 D View Figure 52 ). Stout setae on outer margin of segment I absent. Segment II inner margin with two or three stout setae. Segment II outer margin with two stout setae. Segment III inner margin with three or four stout setae, dorsal surface with few setae at apex. Segment III 1.86–2.07 × as long as base width. Labium. Labial palp segment II 0.73–0.75 as long as segment I. Labial palp segment III 0.67–0.80 as long as segment I (Fig. 52 E View Figure 52 ). Segment I inner margin with 7–9 stout setae, outer margin with 6–9 stout setae. Segment II, outer margin with 2–4 stout setae. Segment III, dorsal face with two or three stout setae. Segment III 2.88–3.33 × as long as base width. Hypopharynx. Apex of superlingua truncate (Fig. 52 F View Figure 52 ).

Thorax. Dorsal margin of femur with a row of few (<12) long and pointed setae; irregular submarginal row of blunt, pointed setae shorter or as long as those on the dorsal margin; ventral margin with short, pointed setae and an irregular submarginal row of longer, blunt setae; central area of upper surface with very few short pointed and blunt setae (Fig. 53 A – B View Figure 53 ). Fore tibia with several rows of long simple or feathered setae on ventral margin, dorsal margin with numerous hair-like setae; middle tibia with one row of short, simple, pointed setae, and an irregular submarginal row of short, pointed setae on ventral margin, dorsal margin with numerous hair-like setae; hind tibia with two rows of long and short feathered and simple setae on ventral margin, dorsal margin with long pointed setae and numerous hair-like setae. Tarsal claw slightly hooked with three denticles progressively larger apically (Fig. 53 C View Figure 53 ).

Abdomen. All gills uni-lamellate, ventral lamella lacking; gill I with two filaments (Fig. 53 D View Figure 53 ), gills II – VI with four or five filaments (Fig. 53 E View Figure 53 ), gill VII with two filaments (Fig. 53 F View Figure 53 ). Posterior margin of terga IX with minute denticles. Posterior margin of terga V – VIII without denticles. Posterolateral projections present on segments VIII – IX.

Derivatio nominis.

The species name is to recognise the Moi people, a native tribe of Sorong, who fight to keep their intact environment and their way of living.