Papuanatula (Papuanatula) paracopis Kaltenbach, Kluge & Gattolliat, 2025, sp. nov.
Creators: name: Kaltenbach, Thomas
name: Kluge, Nikita J.
name: Gattolliat, Jean-Luc
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Ephemeroptera
Baetidae
Papuanatula
Papuanatula paracopis

description: Papuanatula (Papuanatula) paracopis sp. nov.
Figs 83, 84, 85, 86, 87, 88, 89
Etymology.
The species name paracopis refers to the morphological similarity with P. copis.
Material examined.
Holotype. Papua New Guinea • larva; Eastern Highlands Prov., Akameku - Brahmin, Bismarck Range; 05°56'48"S, 145°22'14"E; 2200 m; 23. xi. 2006; leg. M. Balke & Kinibel; (PNG 106); on slide; GBIFCH 00592627; ZSM / SNSB. Paratypes. 4 larvae; same data as holotype; 3 on slides; GBIFCH 00592583, GBIFCH 00592584, GBIFCH 00976109, GBIFCH 00976140; MZL; 1 in alcohol; GBIFCH 00975775; MZL.
Diagnosis.
Larva. The following combination of characters distinguishes P. paracopis sp. nov. from other species of Papuanatula s. str.: body dorsally without row of long, fine, simple setae along midline; metanotum and abdominal terga I – VIII medially with conspicuous, long, hook-like protuberance, bent posteriad, on abdominal segment (s) IX (X) vestigial; labial palp segment II with small, distolateral protuberance; segment III oblong, conical; femur anteriorly with angulate blank in basal 1 / 2; paracercus vestigial.
Description.
Larva (Figs 83 – 89). Body length ~ 6.8 mm, cerci much longer than body length.
Cuticular coloration (Figs 83 a – c, 84 a, b). Head, thorax and abdomen dorsally brown to dark brown, abdominal segments X and partly IX brighter. Thorax with complex markings. Abdominal segments I – IX anteriorly and laterally darker, segments IV – IX with two dark brown dots in anteromedial area. Head and thorax ventrally ecru, thorax with pale brown to dark brown, paired protuberances near distolateral corners of sterna; abdomen ventrally pale yellow-brown, laterally with brown markings. Legs yellow-brown to brown, femur medially with submarginal brown streak and basally with angulate blank. Caudalii yellow-brown.
Hypodermal coloration (Figs 83 a, 84 a). Abdominal terga I – IX with wide dark brown transverse band close to anterior margin and narrower dark brown transverse band close to posterior margin.
Head. Antenna (Fig. 86 d). Length ~ 1.5 × head length. As typical for subgenus. Developing turbinate eyes in last instar male larva (Fig. 86 d) rather narrow, with big distance to each other. Labrum (Fig. 85 a, b). Length 0.6 × maximum width, laterally convex. Dorsal, sub-marginal arc with> 50 densely articulated, feathered setae. Right mandible (Fig. 85 d, e). Margin between prostheca and mola smooth, without denticles. Otherwise, as typical for subgenus. Left mandible (Fig. 85 f – h). Margin between prostheca and mola with minute denticles toward subtriangular process. Otherwise, as typical for subgenus. Hypopharynx (Fig. 85 c). As typical for genus. Maxilla (Fig. 86 c). Maxillary palp slightly longer than galea-lacinia; palp segment II slender, partly sclerotized, approx. 1.2 × as long as segment I, segment I thicker than segment II. Otherwise, as typical for genus. Labium (Fig. 86 a, b). As typical for genus. Paraglossa dorsally with two spine-like setae near inner, distolateral margin. Labial palp with segment I 0.8 × length of segments II and III combined. Segment II with very small, rounded, distomedial protuberance, dorsally with row of four or five spine-like setae near outer, distolateral margin. Segment III oblong, pointed, 0.6 × length of segment II; inner dorsal margin with few feathered setae.
Thorax. Sterna. Protuberances poorly developed. Terga (Figs 83 b, 84 b, 88 a, 89 a). Mesonotum with small, posteromedial protuberance; metanotum posteromedially with hook-like, pointed protuberance, bent posteriorly. Immature larva with short, acute, posteromedial protuberance on pronotum. Surface of fore protoptera along developing veins and on inner margins with small, triangular, pointed scales. Legs (Fig. 87 a – e). Ratio of leg segments: fore leg 0.9: 1.0: 0.3: 0.2, middle leg 1.0: 1.0: 0.3: 0.2 and hind leg 1.1: 1.0: 0.3: 0.2. Femur. Length ~ 3.5 × maximum width. Claw with one row of nine denticles, 1 st denticle longer than other ones, and one posterior seta.
Abdomen. Terga (Figs 83 b, 84 b, 88 a – c, 89 a – e). Abdominal terga I – VIII posteromedially with conspicuous, long, hook-like protuberance, bent posteriad, on abdominal segment (s) IX (X) vestigial; Posterior margin of terga: I smooth, without spines; II – IX with small, triangular, pointed denticles, increasing in length toward IX. Surface with scattered small, triangular, pointed scales. Tergalii (Fig. 87 f, g). Broad oblique ovoid; tracheation developed, hardly visible due to brown pigmentation in large middle part; margins with minute serration and many short, fine, simple setae. Paraproct (Fig. 88 g). Posterior margin with prolongation and with row of many minute denticles. Caudalii (Fig. 88 d – f). Cerci without swimming setae; sometimes few rudimentary swimming setae or insertions still present. Paracercus vestigial.
Pose of subimaginal gonostyli under larval cuticle. Unknown.
Subimago. Unknown.
Imago. Unknown.
Egg. Unknown.
Distribution.
New Guinea (Fig. 147).
description: Published as part of Kaltenbach, Thomas, Kluge, Nikita J. & Gattolliat, Jean-Luc, 2025, Redescription of Papuanatula Lugo-Ortiz & McCafferty (Ephemeroptera, Baetidae), with description of a new subgenus and 20 new species, pp. 159-347 in ZooKeys 1227 on pages 159-347, DOI: 10.3897/zookeys.1227.138100