Papuanatula ( Fijifiliola ) claudia, Kaltenbach, 2025

Kaltenbach, Thomas, 2025, Mayflies of the Fiji Islands (Ephemeroptera), ZooKeys 1259, pp. 205-276 : 205-276

publication ID	https://doi.org/10.3897/zookeys.1259.168521
publication LSID	lsid:zoobank.org:pub:48F9008F-BC5F-49BA-994A-2142AF2EAE55
DOI	https://doi.org/10.5281/zenodo.17583261
persistent identifier	https://treatment.plazi.org/id/F7FA939D-52CA-596F-901B-F29529A4F755
treatment provided by	ZooKeys by Pensoft
scientific name	Papuanatula ( Fijifiliola ) claudia
status	sp. nov.

Treatment

Papuanatula ( Fijifiliola) claudia sp. nov.

Figs 15 View Figure 15 , 16 View Figure 16 , 17 View Figure 17

Material examined.

Holotype. FIJI • larva; Viti Levu , Ba Prov. , near Abaca village, Savuione Riv., close below Savuione waterfall; 17 ° 40 ' 26 " S, 177 ° 33 ' 06 " E; 690 m; 24. x. 2024; leg. T. Kaltenbach; on slide; GBIFCH 1581938; MZL GoogleMaps . Paratypes. • 9 larvae; same data as holotype; 3 on slides; GBIFCH 01581930, GBIFCH 01581934, GBIFCH 01221828; 6 in alcohol; GBIFCH 01581929, GBIFCH 01581933, GBIFCH 01581935, GBIFCH 01581937; MZL GoogleMaps .

Other material.

FIJI • 14 larvae; Viti Levu , Ba Prov., near Abaca village, Savuione Riv.; 17 ° 40 ' 07 " S, 177 ° 32 ' 31 " E; 510 m; 24. x. 2024; leg. T. Kaltenbach; in alcohol; GBIFCH 01581922, GBIFCH 01582020; MZL GoogleMaps .

Diagnosis.

Larva. Following combination of characters distinguishes P. claudia sp. nov. from other species of Fijifiliola subgen. nov.: abdominal terga I, IX, and X yellowish grey, II – IV dark grey, V – VIII grey with indistinct pattern; femur on anterior side in basal ½ with large, dark reddish brown, hypodermal marking in large blank, marking oblong on fore and mid femur and like a streak on hind femur, distomedially with dark grey transvers band, distally reddish brown and grey; femur on posterior side with large, distomedial, reddish brown, hypodermal streak; labial palp segment III slightly pentagonal; paracercus with 8–10 segments.

Description.

Larva (Figs 15 View Figure 15 – 17 View Figure 17 ). Body length 4.3–6.0 mm, cerci longer than body length.

Colouration (Figs 15 a – c View Figure 15 , 17 g View Figure 17 ). Head and thorax dorsally dark grey with indistinct grey pattern; abdominal terga I, IX, and X yellowish grey, II – IV dark grey, V – VIII grey with indistinct pattern. Legs with femur on anterior side in basal ½ with large, dark reddish brown, hypodermal marking in large blank, marking oblong on fore and mid femur, and like a streak on hind femur; distomedially with dark grey transverse band, distally reddish brown and grey in colour; femur on posterior side with large, distomedial, reddish brown, hypodermal streak; tibia and tarsus dark grey. Head, thorax, and abdomen ventrally yellowish grey. Caudalii grey.

Head. Antenna (Fig. 16 j View Figure 16 ). Length ~ 1.5 × head length. As typical for subgenus.

Labrum (Fig. 16 a, b View Figure 16 ). Length 0.6 × maximum width. Otherwise, as typical for subgenus.

Right mandible (Fig. 16 f View Figure 16 ). Margin between prostheca and mola straight, with few minute denticles. Otherwise, as typical for subgenus.

Left mandible (Fig. 16 e View Figure 16 ). Margin between prostheca and mola straight, with few denticles toward subtriangular process. Otherwise, as typical for subgenus.

Hypopharynx and superlinguae (Fig. 16 d View Figure 16 ). As typical for subgenus.

Maxilla (Fig. 16 g View Figure 16 ). Maxillary palp approx. as long as galea-lacinia; palp segment II ~ 1.2 × longer than segment I. Otherwise, as typical for subgenus.

Labium (Fig. 16 c View Figure 16 ). Paraglossa with one spine-like seta on inner, distolateral margin. Labial palp with segment I ~ 0.8 × length of segments II and III combined. Segment II dorsally with row of five spine-like setae near outer, distolateral margin. Segment III slightly pentagonal, 0.7 × length of segment II. Otherwise, as typical for subgenus.

Legs (Fig. 17 a – f View Figure 17 ). Ratio of leg segments: fore leg 1.1: 1.0: 0.4: 0.1, middle leg 1.2: 1.0: 0.4: 0.1 and hind leg 1.2: 1.0: 0.3: 0.1. Femur. Length ~ 2.7 × maximum width. Tibia. With one row of short, blunt setae parallel to row of long, fine, simple setae. Claw with one row of ten or 11 denticles; one posterior seta. Otherwise, as typical for subgenus.

Abdomen. Terga (Fig. 17 g, h View Figure 17 ). Posterior margin of terga: I smooth, without denticles; II – IX with triangular, pointed, apically partly split denticles.

Tergalii (Fig. 17 i, j View Figure 17 ). Elongate oval; tracheation well-developed, reaching margins, brown; margin smooth, without setae.

Paraproct (Fig. 17 k View Figure 17 ). Posterior margin with poorly developed prolongation, with split denticles in distal part.

Caudalii (Fig. 16 h, i View Figure 16 ). Cerci without swimming setae, distally with one rudimentary insertion per segment. Paracercus with 8–10 segments.

Pose of subimaginal gonostyli under larval cuticle. Unknown.

Subimago. Unknown.

Imago. Unknown.

Egg. Unknown.

Biological aspects.

Local species, larvae living in run of fast flowing, turbulent mountain rivers with pristine water (Fig. 36 d View Figure 36 ). There are male and female larvae, but one last instar female larva had eggs in which the larvae are already developing, indicating facultative parthenogenesis, and probably ovoviviparity (Fig. 16 k, l View Figure 16 ) (see discussion).

Etymology.

The species is dedicated to my wife Claudia Kaltenbach for her constant support during this collection trip.

Distribution.

Fiji: Viti Levu (Fig. 39 e View Figure 39 ).