Papuanatula (Papuanatula) normungulata 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 normungulata

description: Papuanatula (Papuanatula) normungulata sp. nov.
Figs 62, 63, 64
Etymology.
The species name normungulata refers to the larval claw structure, which lacks the arched posterior seta and the enlarged denticle associated with this seta that is normal for the plesiomorphon Papuanatula, being different from other species of Papuanatula.
Material examined.
Holotype. female larva with partly developed subimaginal details; Indonesia • Sulawesi, tributary of river Mamasa, 5 km W Mamasa; 15–27. viii. 2009; coll. N. Kluge & L. Sheyko; SPbU.
Diagnosis.
Larva. The following combination of characters distinguishes P. normungulata sp. nov. from other species of Papuanatula s. str.: body without irregular row of long, fine, simple setae along midline; abdominal terga I – VIII with unpaired, long, pointed protuberance close to posterior margin; patella-tibial suture reduced; posterior seta absent; wide stripe of densely situated setae instead of the regular setal row on outer side of femur and tibia.
Description.
Larva (Figs 62 – 64). Cuticular coloration. Head brownish. Pronotum and mesonotum pale brownish with darker areas; fore protoptera with wide darker lines corresponding to convex veins and thin paler lines corresponding to concave veins (Figs 62 a, 63 a, b). Cuticle of femur mostly pale ochre-brownish, darker brown at apex. Tibia and tarsus ochre-brownish (Fig. 64 a, b). Abdominal terga ochre-brownish with median spines darker brown. Cerci brow.
Hypodermal coloration. In female larva with developed subimaginal wings, whole dorsal side of head, thorax, and abdomen uniformly dark brown; pleura of thorax ochre with dark brown; prosternum and mesosternum dark brown; abdominal sterna with ochre and brown areas (Figs 62 a, 63 a, b). On anterior side of each leg, proximal ¾ of femur entirely dark brown, distal ¼ ochre; tibia and tarsus ochre. Tissues of tergalii uniformly grey, without pigmentation associated with trachea, so tracheae poorly visible (Figs 63 f, 64 a, b).
Head. Antenna (Fig. 62 a). Length ~ 1.5 × head length. As typical for subgenus. Developing turbinate eyes in last instar male larvae. Unknown. Labrum (Fig. 62 a) widened distally; long setae on dorsal surface numerous and forming integral, regular transverse row; each seta consists of stout stem and numerous long processes on both sides; setae and their processes intensively yellowish. Right mandible (Fig. 62 a). As typical for subgenus. Left mandible (Fig. 62 a). As typical for subgenus. Hypopharynx (Fig. 62 c) apically evenly covered with setae-like spines. Maxilla (Fig. 62 b). Maxillary palp as long as galea-lacinia. Otherwise, as typical for genus. Labium (Fig. 62 d). Paraglossa with proximal 2 / 3 parallel-sided; three apical setal rows straight and continued by straight row on ventral side of paraglossa. Glossa as long as 3 / 4 of paraglossa, with slender distal portion twice longer than wide proximal portion; distal portion narrowed proximally, widened at middle, with lateral margin convex. Glossa with several long setae in distal 1 / 2 and with several long seta near middle of ventral side. Labial palp without distomedian projection on segment II; segment III cone-shaped, with median margin as long as lateral margin.
Thorax. Sterna. With small protuberances on sides of prosternum and close to openings of mesothoracic and metathoracic sternal apodemes (as in Fig. 108 a). Terga (Fig. 63 d) without long setae on midline. Metanotum with unpaired, moderately long, pointed, spine-like protuberance close to posterior margin; without hind protoptera or their vestiges. Legs (Fig. 64 a – f). Hind leg unknown. Fore femur widened in proximal part. Femur. Outer side of each femur with numerous long, pointed setae situated densely and irregularly, forming stripe of three or four setae width. Apex of femur with short, stout, pointed, spine-like setae. Tibia. Patella-tibial suture reduced, i. e., smoothed out and not crossing inner side of tibia. Tibia-tarsal condylus turned to anterior side. Anterior side of tibia with numerous long setae situated densely and irregularly, forming stripe of three to four setae width; each seta stout and brown in proximal part, hair-like and colorless in distal part. Tarsus. Anterior side of tarsus with stripe of setae similar to tibia, but smaller setae. Posterior side of each tarsus with regular row of short, stout, oval setae (looking pointed in profile) and one much longer, thinner, pointed seta distad of them. Claw with row of six or seven subequal denticles, without posterior seta.
Abdomen. Terga (Fig. 63 b – e) without long setae on midline. Each abdominal tergum I – VIII with unpaired, long, pointed, spine-like protuberance close to posterior margin. Abdominal terga I – VI without denticles on posterior margins; posterior margins of abdominal terga VII – X with small, sharply pointed denticles; some pointed denticles on surface of abdominal terga, including median spines. Tergalii (Fig. 63 f) of abdominal segment I absent; tergalii II – VII oval, nearly subequal, tergalii II and VII slightly smaller than others. Each tergalius with costal and anal ribs narrow, smooth, present on proximal 1 / 2 of tergalius only. Paraproct with margins smooth, lacking denticles. Caudalii (Fig. 63 h) without swimming setae or their vestiges. Paracercus small, conic, non-segmented.
Pose of subimaginal gonostyli under larval cuticle. Unknown.
Subimago. Texture. On all legs of both sexes, each tarsomere covered mostly with blunt microlepides, with pointed microlepides near apex (as in Fig. 70 i).
Imago. Unknown. Judging by hypodermal coloration of mature female larva, female imago has following coloration: head, thorax, and abdomen dorsally dark brown; femur of each leg pair dark brown except distal ¼.
Egg. Unknown.
Dimension.
Body length 6 mm.
Distribution.
Indonesia: Sulawesi Island (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