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

Papuanatula (Papuanatula) pluresetae sp. nov.

Figs 114 View Figure 114 , 115 View Figure 115 , 116 View Figure 116 , 117 View Figure 117 , 118 View Figure 118 , 119 View Figure 119 , 120 View Figure 120

Etymology.

The species name pluresetae is based on the Latin words plures setae meaning “ several setae ” and refers to the three or four posterior setae on the claws.

Material examined.

Holotype. Papua New Guinea • larva; Simbu Prov., Mt. Wilhelm, Pindaunde Creek , S 2 (oria 3); 05°48'03"S, 145°04'09"E; 3210 m; 17. viii. 1999; leg. L. Čížek; on slide; GBIFCH 00592587 , GBIFCH 00592588 ; MZL GoogleMaps . Paratypes. 78 larvae; same data as holotype; 6 on slides; GBIFCH 00592548 , GBIFCH 00592578 , GBIFCH 00592579 , GBIFCH 00592589 , GBIFCH 00592590 , GBIFCH 00592591 , GBIFCH 00592592 , GBIFCH 01221756 ; 72 in alcohol; GBIFCH 00976070 , GBIFCH 00976100 , GBIFCH 00976101 , GBIFCH 00976120 ; MZL GoogleMaps • 62 larvae; Simbu Prov., Mt. Wilhelm, Pindaunde Creek , near fish farm, S 4 (oria 5); 05°49'02"S, 145°05'16"E; 2600 m; 18. viii. 1999; leg. L. Čížek; in alcohol; GBIFCH 00976123 ; MZL GoogleMaps • 5 larvae; Simbu Prov., Mt. Wilhelm, Pindaunde Creek , in forest, S 3 (oria 4); 05°49'S, 145°04'30"E; 2900 m; 18. viii. 1999; leg. L. Čížek; in alcohol; GBIFCH 00976116 ; MZL GoogleMaps .

Diagnosis.

Larva. The following combination of characters distinguishes P. pluresetae sp. nov. from other species of Papuanatula s. str.: body dorsally with irregular row of long, fine, simple setae along midline; abdominal terga without protuberances; femur basally with short, wedge-shaped blank; otherwise, brown (after 35 years in alcohol); paracercus vestigial; claw with three or four posterior setae.

Description.

Larva (Figs 114 View Figure 114 – 120 View Figure 120 ). Body length 4.5–5.8 mm, cerci much longer than body length (~ 1.3 ×).

Cuticular coloration (Fig. 114 a – c View Figure 114 ; after 35 years in alcohol). Head, thorax and abdomen dorsally brown. Femur basally with short, wedge-shaped blank; otherwise, brown. Tibia pale brown; tarsus darker brown. Head, thorax, and abdomen ventrally brown. Cerci pale brown.

Hypodermal coloration (Fig. 114 a, b View Figure 114 . Abdominal terga I – IX with narrow, dark brown transverse band along posterior margins.

Head. Dorsally with irregular row of long, fine, simple setae along midline (as in Fig. 26 b View Figure 26 ). Antenna (Fig. 117 e View Figure 117 ). Length ~ 1.5 × head length. Developing turbinate eyes in last instar male larva (Fig. 117 e View Figure 117 ) roundish, rather small, with large distance to each other. Labrum (Fig. 115 a, b View Figure 115 ). Length 0.5 × maximum width, laterally convex. Dorsal, sub-marginal arc with ~ 40 feathered setae. Right mandible (Fig. 115 d, e View Figure 115 ). Margin between prostheca and mola with row of minute denticles. Otherwise, as typical for subgenus. Left mandible (Fig. 115 f, g View Figure 115 ). Margin between prostheca and mola with row of minute denticles. Otherwise, as typical for subgenus. Hypopharynx (Fig. 115 c View Figure 115 ). As typical for genus. Maxilla (Fig. 116 c, d View Figure 116 ). Maxillary palp subequal in length to galea-lacinia, robust; palp segment II as long as segment I. Otherwise, as typical for genus. Labium (Fig. 116 a, b View Figure 116 ). As typical for the genus. Paraglossa dorsally with two spine-like setae near inner, distolateral margin. Labial palp with segment I 0.9 × length of segments II and III combined. Segment II with minute distomedial protuberance, dorsally with row of four spine-like setae near outer, distolateral margin. Segment III conical, pointed; 0.7 × length of segment II; inner dorsal margin with few feathered setae.

Thorax. Sterna. With small protuberances on sides of prosternum and close to openings of mesothoracic and metathoracic sternal apodemes (as Fig. 108 a View Figure 108 ). Terga (Fig. 120 a View Figure 120 ) without protuberances; with irregular row of long, fine, simple setae along midline (as in Fig. 26 b View Figure 26 ). Legs (Fig. 117 a, d View Figure 117 ). Ratio of leg segments: fore leg 0.9: 1.0: 0.3: 0.2, middle leg 0.9: 1.0: 0.3: 0.2 and hind leg 1.1: 1.0: 0.4: 0.2. Femur. Length ~ 3 × maximum width. Claw with one row of seven or eight denticles and three or four posterior setae.

Abdomen. Terga (Figs 119 a View Figure 119 , 120 b – d View Figure 120 ) with irregular row of long, fine, simple setae along midline (as in Fig. 26 b View Figure 26 ). Terga without protuberances, terga I – IV with slight, paired, medioposterior elevations. Posterior margin of terga: I smooth, without denticles; II – IX with triangular, pointed denticles, partly with minute, pointed denticles in between. Surface with scattered small, triangular, pointed, striated scales. Tergalii (Fig. 118 a, b View Figure 118 ). Ovoid, tracheation poorly developed; margins smooth, with short, fine, simple setae. Paraproct (Fig. 118 c – f View Figure 118 ). Posterior margin with prolongation and row of minute denticles; on surface an area with notched scales. Caudalii (Fig. 117 f, g View Figure 117 ). Cerci apart from basal and distal part with 1–4 swimming setae per segment, initially increasing and then again decreasing toward distal part. Paracercus vestigial.

Pose of subimaginal gonostyli under larval cuticle. As typical for the subgenus.

Subimago. Unknown.

Imago. Unknown.

Egg. Unknown.

Distribution.

New Guinea (Fig. 148 View Figure 148 ).