Papuanatula (Papuafiliola), Kaltenbach, Kluge & Gattolliat, 2025

Kaltenbach, Thomas, Kovács, Tibor & Gattolliat, Jean-Luc, 2025, New species of Papuanatula Lugo-Ortiz & McCafferty, 1999 from New Guinea (Ephemeroptera, Baetidae) with focus on Batanta Island, ZooKeys 1259, pp. 1-55 : 1-55

Subgenus Papuafiliola Kaltenbach, Kluge & Gattolliat, 2025

Figs 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28

Diagnosis

(larval characters; see Kaltenbach et al. 2025: 318). Antennal flagellum distally without brown dots; labrum widest at base, dorsally with few submarginal, simple setae (Fig. 24 b ); both mandibles without prolonged, blade-like incisor (Fig. 24 c, d ); labial palp with distomedian projection on segment II (Fig. 24 e ); outer side of femur with regular row of long, slender, flattened, parallel-sided setae with blunt apex (Fig. 25 a, b ); tibia with regular row of similar setae (Fig. 25 a, c ); tarsus on inner margin with distalmost seta not longer or only slightly longer than other setae.

Figures

Figure 20. Papuanatula (Papuafiliola) horvathrobi sp. nov., larva, habitus. a. Dorsal view; b. Lateral view; c. Ventral view. Scale bars: 1 mm.

Figure 21. Papuanatula (Papuafiliola) horvathrobi sp. nov., larva. a. Labrum; b. Labrum, submarginal arc of setae; c. Left mandible; d. Right mandible; e. Labium; f. Hypopharynx and superlinguae; g. Maxilla; h, i. Tergalius V; j. Head. Scale bars: 50 µm (j), 20 µm (c – h), 10 µm (a, b, i).

Figure 22. Papuanatula (Papuafiliola) horvathrobi sp. nov., larva. a. Hind leg; b. Hind femur, outer margin; c. Hind tibia, anterior surface; d. Hind tarsus, outer margin; e. Abdomen; f. Abdominal terga; g. Paraproct and developing subimaginal gonostylus; h. Paracercus; i. Cercus; j. Abdominal tergum IV, surface. Scale bars: 100 µm (e), 50 µm (a), 20 µm (h), 10 µm (b – d, f, g, i).

Figure 23. Papuanatula (Papuafiliola) longabranchias sp. nov., larva, habitus. a. Dorsal view; b. lateral view; c. ventral view; d. legs. Scale bars: 1 mm.

Figure 24. Papuanatula (Papuafiliola) longabranchias sp. nov., larva. a. Labrum; b. Left mandible; c. Right mandible; d. Labium; e. Labial palp; f. Hypopharynx and superlinguae; g. Maxilla; h, i. Tergalius III; j. Head. Scale bars: 100 µm (j), 20 µm (b – d, f – h), 10 µm (a, e, i).

Figure 25. Papuanatula (Papuafiliola) longabranchias sp. nov., larva. a. Hind leg; b. Hind femur, inner margin; c. Hind femur, outer margin; d. Hind tibia, anterior surface; e. Hind tarsus, outer margin; f. Hind claw; g. Thorax, abdomen; h. Abdominal terga; i. Paraproct; j. Paracercus; k. Cercus. Scale bars: 100 µm (g), 50 µm (a), 20 µm (j), 10 µm (b – f, h, I, k).

Figure 26. Papuanatula (Papuafiliola) longabranchias sp. nov, imago, male. a. Habitus, lateral view; b. Habitus, dorsal view; c. Fore leg; d. Hind leg. Scale bars: 1 mm (a, b), 100 µm (c, d).

Figure 27. Papuanatula (Papuafiliola) longabranchias sp. nov. Imago, male. a. Fore wing; b. Genitalia. Subimagos. c, d. Habitus, male (lateral view, dorsal view); e, f. Habitus, female (lateral view, dorsal view); g. Hind leg; h. Fore tarsus; i. Hind tarsus. Scale bars: 1 mm (c – f), 100 µm (a, g), 20 µm (b, h), 10 µm (i).

Figure 28. Papuanatula (Papuafiliola) longabranchias sp. nov. a – c. Eggs; d. Micropyle. Scale bars: 10 µm (a – c), 5 µm (d).