Kosminympha kalamorum, 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.15923285
persistent identifier	https://treatment.plazi.org/id/9C67D26A-68C3-5566-A388-366F02EE5DE4
treatment provided by	ZooKeys by Pensoft
scientific name	Kosminympha kalamorum
status	sp. nov.

Treatment

Kosminympha kalamorum sp. nov.

Figs 34 D View Figure 34 , 60 B View Figure 60 , 69 View Figure 69 , 70 View Figure 70

Material examined.

Holotype. • Papua New Guinea, one nymph on slide, Western Highlands Province, Simbai , 1800–2000 m, 26.II.2007, 05°15.872'S, 144°32.717'E, Kinibel col [PNG 134], GBIFCH 01223161 ( ZSM) GoogleMaps . Paratypes. • Papua New Guinea, one nymph on slide, GBICH 01223162 , 2 nymphs in ethanol, GBIFCH 01523447 , same data as holotype ( MZL) GoogleMaps . • Papua New Guinea, one nymph on slide, GBIFCH 01223163 , Eastern Highlands Province, Akameku – Brahmin, Bismarck Range , 2200 m, 23.XI.2006, 05°56.801'S, 145°22.238'E, M. Balke & Kinibel col [PNG 106] ( MZL) GoogleMaps .

Nymph.

Body length, female: 11.5 mm.

Diagnosis.

Labrum trapezoid; median part of labrum in ventral view with scattered thin and long setae; abdominal tergites predominantly orange with dark lateral marks; posterior margin of abdominal segment VII without denticles; posterolateral expansions present on abdominal segments VII – IX.

Colouration.

Head. Medium brown, washed with dark brown between ocelli, pale brown between lateral ocelli and compound eyes, clypeus medium brown. Antenna uniformly yellowish. Mouth parts brownish. Thorax. Pronotum medium brown, dark brown laterally, a large dark brown anchor-like macula straddling the sagittal line. Mesonotum pale brown, medium brown laterally, fore wing pads dark brown (Fig. 60 B View Figure 60 ). Femur: fore femur yellowish brown, with proximal 1 / 3 whitish, mid- and hind femur pale brown. Tibia yellowish brown, apex of fore tibia dark brown. Tarsi pale brown. Abdomen. Terga brownish orange, segment II – V with a pair of elongated dark brown maculae along the sagittal line, segments VI – IX with a pair of triangular to square dark brown maculae, segment IX with two small dark stripes along the lateral margins, segment X entirely brownish orange. Sterna yellowish from segments I – IV, becoming brownish yellow to brownish orange posteriorly. Gills purple. Terminal filaments yellowish.

Description.

Head. Labrum trapezoid (Fig. 69 A View Figure 69 ). Ratio labrum width / clypeus width 1.26–1.27. Ratio labrum width / insertion width 1.69–1.71. Medial emargination shallow with flat denticles. Proximal row of setae simple, shifted to distal margin. Number of setae on proximal row ~ 123–130. Distal row of setae multiple. Median part of labrum in ventral view with scattered thin setae (Fig. 69 B View Figure 69 ). Mandibles. Outer margin with row of setae on distal 1 / 2. Ending of the row before incisor. Right mandible with 8–13 setae below the mola (Fig. 69 C View Figure 69 ). Maxillae. Posterior margin of cardo with few stout and medium size setae (Fig. 34 D View Figure 34 ). Proximo-lateral margin of stipes with a bunch of eight long and stout setae. Apical-ventral row with 34–44 pectinate setae. Maxillary palp segment II 0.77–0.86 as long as segment I. Maxillary palp segment III 0.77–0.86 as long as segment I (Fig. 69 D View Figure 69 ). Stout setae on outer margin of segment I absent. Segment II inner margin with two stout setae, outer margin without or with up to two stout setae. Segment III inner margin with six stout setae, dorsal surface with few setae at apex. Segment III 1.67–2.00 × as long as base width. Labium. Labial palp segment II 0.84–0.87 as long as segment I. Labial palp segment III 0.60–0.64 as long as segment I (Fig. 69 E View Figure 69 ). Segment I inner margin with 8–10 stout setae. Segment I outer margin with 12–16 stout setae. Segment II outer margin with 6–10 stout setae. Segment III dorsal face without stout setae. Segment III 2.56–3.33 × as long as base width. Hypopharynx. Apex of superlingua truncate (Fig. 69 F View Figure 69 ).

Thorax. Dorsal margin of fore femur with few stout, short, pointed setae, and a double submarginal row of long, stout, pointed setae (Fig. 70 A View Figure 70 ); dorsal margin of mid- and hind femur with a row of long, thin, pointed setae; a submarginal row of pointed setae as long as or a little bit shorter than those on the dorsal margin (Fig. 70 B View Figure 70 ); ventral margin with short, stout setae and an irregular submarginal row of long, pointed stout setae, except on hind leg where those on ventral margin are shorter; central area of upper surface with numerous short, stout, blunt setae. Fore tibia with two or three 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 a submarginal row of long, simple, pointed stout setae on ventral margin, outer margin with numerous hair-like setae; hind tibia with a row of simple long, stout setae on ventral margin, outer margin with short pointed stout setae and hair-like setae. Tarsal claw hooked with 6–8 denticles progressively larger apically, followed by two tiny protuberances (Fig. 70 C View Figure 70 ).

Abdomen. Gill I with both lamellae. Gills II – VII with dorsal and ventral lamellae of the same size. Gill I with ~ 10 filaments on each lamella, gills II – VI with ~ 15 filaments on each lamella (Fig. 70 F View Figure 70 ), gill VII minute with 5–7 filaments on each lamella. Filamentous projections on apex. Posterior margin of terga IX with minute denticles, or with larger denticles (Fig. 70 D View Figure 70 ). Posterior margin of terga VIII with minute denticles (Fig. 70 E View Figure 70 ). Posterior margin of terga V – VII without denticles. Posterolateral projections present on segments VII – IX.

Derivatio nominis.

The specific name is to acknowledge the Kalam tribe of the remote area of Simbai, where the specimens described here come from.