Kosminympha paulinae, 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.15923291
persistent identifier	https://treatment.plazi.org/id/B808E337-80E5-539C-B1EC-90D3B0EA8C7F
treatment provided by	ZooKeys by Pensoft
scientific name	Kosminympha paulinae
status	sp. nov.

Treatment

Kosminympha paulinae sp. nov.

Figs 34 J View Figure 34 , 61 C View Figure 61 , 71 View Figure 71 , 72 View Figure 72

Material examined.

Holotype. • Papua New Guinea, nymph on slide, Morobe Province, Menyamya, Mt Inji , 1700 m, 14.XI.2006, approx. 07°14.813'S, 146°01.330'E, M. Balke & Kinibel col [PNG 96], GBIFCH 01223164 ( ZSM) GoogleMaps . Paratype. • Papua New Guinea, one nymph in ethanol, GBIFCH 01523448 , same data as holotype ( MZL) GoogleMaps .

Nymph.

Body length, female: 8.2 mm.

Diagnosis.

Labrum trapezoid; dorsal surface of labrum with distal row simple; tarsal claw hooked with seven teeth; abdominal tergites predominantly medium to dark brown; central area of upper surface of femora with numerous long, stout, and blunt setae, shorter on hind femur; posterior margin of abdominal segment VII with minute denticles.

Colouration.

Head. Greyish brown, pale brown in front of the fore ocellus, whitish between lateral ocelli and compound eyes. Antenna whitish, scape and pedicel greyish white. Mouth parts greyish. Thorax. Pronotum medium brown, dark brown laterally and anteriorly as in Fig. 61 C View Figure 61 . Mesonotum medium brown bordered with dark brown, fore wing pads dark brown. Femur medium brown, except proximal part whitish. Tibia uniformly yellowish to pale brown. Tarsi yellowish to pale brown. Abdomen. Terga uniformly dark brown, sagittal line lighter. Sterna yellowish, segments VIII – IX darker. Gills greyish purple. Terminal filaments yellowish brown.

Description.

Head. Labrum trapezoid (Fig. 71 A View Figure 71 ). Ratio labrum width / clypeus width 1.28. Ratio labrum width / insertion width 1.71. Medial emargination shallow with flat denticles. Proximal row of setae simple, shifted to anterior margin. Number of setae on proximal row ~ 120. Distal row of setae multiple, shifted to anterior margin. Median part of labrum in ventral view with scattered thin setae (Fig. 71 B View Figure 71 ). Mandibles. Outer margin with row of setae on distal 1 / 2. Ending of the row before incisor. Right mandible with 5 setae below the mola (Fig. 71 C View Figure 71 ). Maxillae. Posterior margin of cardo with ~ 10 stout pointed and long setae. Proximo-lateral margin of stipes with a bunch of ~ 12 medium size and short stout setae (Fig. 34 J View Figure 34 ). Apical-ventral row with 45 pectinate setae. Maxillary palp segment II 0.86 as long as segment I. Maxillary palp segment III 0.67 as long as segment I (Fig. 71 D View Figure 71 ). Stout setae on outer margin of segment I absent. Segment II inner margin without stout setae. Segment II outer margin without stout setae. Segment III inner margin with six stout setae, dorsal surface with few setae at apex. Segment III 1.87 × as long as base width. Labium. Labial palp segment II 0.75 as long as segment I. Labial palp segment III 0.59 as long as segment I (Fig. 71 E View Figure 71 ). Segment I inner margin with ten stout setae. Segment I outer margin with 17 stout setae. Segment II outer margin with ten stout setae. Segment III dorsal face with two stout setae. Segment III 2.71 × as long as base width. Hypopharynx. Apex of superlingua truncate (Fig. 71 F View Figure 71 ).

Thorax. Dorsal margin of femur with a row of long, stout, pointed setae; one submarginal row of pointed setae as long as those on the dorsal margin (Fig. 72 A View Figure 72 ), ventral margin with short, stout setae and a submarginal row of pointed stout setae, except on hind leg where those on ventral margin are shorter; central area of upper surface with numerous long, stout, blunt setae, shorter on hind femur. Fore tibia with several rows of long simple or feathered setae on ventral margin, dorsal margin with numerous hair-like setae; middle tibia with a row of short, pointed setae and a submarginal row of long, pointed stout setae on ventral margin, outer margin with numerous hair-like setae; hind tibia with a row of short, pointed setae and a submarginal row of long, pointed simple stout setae on ventral margin, lower surface covered with simple, thin setae, outer margin with short and long pointed stout setae and numerous hair-like setae. Tarsal claw hooked with seven subequal denticles, except median much larger (Fig. 72 B – C View Figure 72 ).

Abdomen. Gill I with both lamellae. Gills II – VII with dorsal and ventral lamellae of the same size, or with ventral lamella smaller. Gill I with ~ 15 filaments on each lamella, gills II – VI with ~ 15 filaments on upper lamella, and ~ 10 on lower lamella, gill VII with ~ 15 filaments on each lamella. Filamentous projections on apex, or along entire margin. Posterior margin of terga IX with denticles. Posterior margin of terga VII – VIII with minute denticles. Posterior margin of terga V – VI without denticles. Posterolateral projections present on segments VI – IX.

Derivatio nominis.

This species is dedicated to Pauline Sartori, daughter of the first author.