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

Papuanatula (Papuanatula) pilosa sp. nov.

Figs 109 View Figure 109 , 110 View Figure 110 , 111 View Figure 111 , 112 View Figure 112 , 113 View Figure 113

Etymology.

The species name is based on the Latin word pilosus meaning “ hairy ” and refers to the rows of fine setae on inner margin of femur, outer margin of tibia, and laterally on cerci.

Material examined.

Holotype. Indonesia • larva; Papua Prov.; Riv. Je, Loc. Arfak, E of Amber village ; 01°06'35"S, 133°56'51"E; 1200 m; 16. vi. 2016; leg. Sumoked and M. Balke; (BH 68); on slide; GBIFCH 00976044 ; MZB. GoogleMaps

Diagnosis.

Larva. The following combination of characters distinguishes P. pilosa sp. nov. from other species of Papuanatula s. str.: body dorsally without row of long, fine, simple setae along midline; abdominal terga I – VIII (IX) with medium, pointed, dorsoposteriorly oriented, medial protuberances; pronotum with paired, medioposterior protuberances; femur with medial, grey marking; inner margin of femur and outer margin of tibia with irregular rows of medium, fine setae; cerci bilaterally with row of short, fine setae; paracercus vestigial; body size 4.5 mm.

Description.

Larva (Figs 109 View Figure 109 – 113 View Figure 113 ). Body length 4.5 mm, cerci much longer than body length (~ 1.2 ×).

Cuticular coloration (Fig. 109 a – c View Figure 109 ). Head, thorax and abdomen dorsally reddish-brown; thorax with complex pattern; abdominal segments I, V – VI and X slightly brighter. Legs reddish-brown; femur medially with darker marking, red-brown in distal area, bright area in basal part. Head and thorax ventrally ecru, protuberances on thoracic sterna darker; abdomen yellow-brown.

Hypodermal coloration (Fig. 109 a, b View Figure 109 ). Abdominal segments I – IX dorsally with narrow, dark brown, transverse band on posterior margins; intersegmental membranes slightly reddish-grey.

Head. Antenna (Fig. 109 a – c View Figure 109 ). Length ~ 1.5 × head length. As typical for subgenus. Developing turbinate eyes in last instar male larva unknown. Labrum (Fig. 110 a, b View Figure 110 ). Length 0.5 × maximum width, laterally convex. Dorsal, sub-marginal arc with ~ 9 feathered setae. Right mandible (Fig. 110 d, e View Figure 110 ). Margin between prostheca and mola with some minute denticles toward prostheca. Otherwise, as typical for subgenus. Left mandible (Fig. 110 f, g View Figure 110 ). Margin between prostheca and mola with some minute denticles toward prostheca. Otherwise, as typical for subgenus. Hypopharynx (Fig. 110 c View Figure 110 ). As typical for genus. Maxilla (Fig. 111 c, d View Figure 111 ). Maxillary palp slightly longer than galea-lacinia, slender; palp segment II ~ 1.3 × length of segment I. Otherwise, as typical for genus. Labium (Fig. 111 a, b View Figure 111 ). As typical for the genus. Paraglossa dorsally with two spine-like setae near inner, distolateral margin. Labial palp with segment I ~ 1.2 × length of segments II and III combined. Segment II with slight, broadly rounded, distomedial protuberance, dorsally with row of five spine-like setae near outer, distolateral margin. Segment III slightly pentagonal, pointed, 0.6 × length of segment II.

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 (Figs 109 b View Figure 109 , 113 b View Figure 113 ). Pronotum with paired, blunt, posteromedial protuberances. Metanotum with medium, pointed, dorsally oriented, medial protuberance. Legs (Fig. 112 a – e View Figure 112 ). Ratio of leg segments: fore leg 1.0: 1.0: 0.3: 0.1, middle leg 1.1: 1.0: 0.3: 0.1 and hind leg 1.2: 1.0: 0.3: 0.1. Femur. Length ~ 3 × maximum width; inner margin with irregular, dense row of medium, fine setae. Tibia. Outer margin with irregular, dense row of medium, fine setae. Claw with one row of eight or nine denticles and one posterior seta.

Abdomen. Terga (Fig. 113 a, c – f View Figure 113 ). Terga I – IX with medium, pointed, dorsoposteriorly oriented, medial protuberances. Posterior margin of terga III – IX with variable, triangular, pointed denticles, spaced on terga III – VI. Tergalii (Fig. 111 f, g View Figure 111 ). Skew ovoid, tracheation well developed; margins smooth, with short, fine, simple setae. Paraproct (Fig. 111 e View Figure 111 ). Posterior margin membranous, with prolongation and row of minute denticles. Caudalii (Fig. 112 f – h View Figure 112 ). Cerci without swimming setae, with bilateral rows of minute setae. Paracercus vestigial.

Pose of subimaginal gonostyli under larval cuticle. Unknown.

Subimago. Unknown.

Imago. Unknown.

Egg. Unknown.

Distribution.

New Guinea (Fig. 147 View Figure 147 ).