Species profile
Drepanosticta seramensis
van Tol & Bedjanič, 2018
Taxonomic path
SuborderZygoptera
FamilyPlatystictidae
GenusDrepanosticta
DDData Deficient
EndemicSeram Island
Last updated: 09 July 2026

Diagnosis
Male : A brown member of the Drepanosticta moluccana species-group. Head with dark yellow labium and pale cream labrum, mandibles, and anteclypeus; the labrum has a dark brown anterior half. The rest of the head is mostly brown, with a conspicuous pale transverse stripe between the antennae and a distinct transverse occipital carina. Prothorax predominantly brown, without conspicuous posterior processes; posterior lobe with small but distinct triangular projections at the lateral corners. Synthorax dark brown, with mesepimeron and metepimeron slightly paler. Abdomen brown with darker posterior segments. Superior anal appendages pale brown, elongate club-shaped distally, with rounded tips and a distinct dorsal tubercle; inferior appendages brown, slender, and curved inward apically.
Female : Similar to the male in head and thoracic colour pattern, but markings are somewhat better defined. Abdomen stouter than in male. Valves and terebra short, not surpassing the level of the anal appendages.
Morphological Characters

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Locality
Distribution
Endemic to Seram Island, Maluku, Indonesia. Known from several localities in and around Manusela National Park.
Ecology
Habitat
Collected along small streams, swampy areas, and pools in primary and secondary forest in and around Manusela National Park, at approximately 20–400 m a.s.l (Van Tol, 2018).
Remarks
Notes
Belongs to the Drepanosticta moluccana species-group, based mainly on the structure of the male anal appendages. Members of this group share a combination of characters including the absence of black antehumeral markings, an occipital transverse ridge not developed laterally into two acute points, a posterior pronotal lobe with short and undeveloped lateral extremities, and inferior appendages bearing median apical and subapical teeth.
This species is closely related to D. moluccana from Buru and D. amboinensis from Ambon, but differs by the sharper lateral edges of the posterior pronotal lobe, the more elongate ventral club of the superior anal appendages, and less robust, less subterminally constricted inferior appendages.
The monophyly of the D. moluccana species-group remains uncertain and requires further phylogenetic study.
Literature
References
1 references- 1
Tol, J.V. & Bedjanič, M. (2018) A new Drepanosticta species from Seram, Moluccas (Odonata: Platystictidae). Zootaxa, 4461 (1), 127–133.