Species profile
Drepanosticta halmahera
van Tol, 2007
Taxonomic path
SuborderZygoptera
FamilyPlatystictidae
GenusDrepanosticta
DDData Deficient
EndemicHalmahera
Last updated: 09 July 2026

Diagnosis
Male : Medium-sized Drepanosticta with a brown and black colour pattern. Head with bluish-white labrum, anteclypeus, and mandibles, while the vertex and occipital region are brownish black. Transverse occipital carina is well developed, with slightly elevated lateral extremities. The prothorax is pale brown; posterior lobe with a pair of stout, flattened processes extending over the synthorax, curved inward, with widened and thickened distal ends.
The synthorax is mainly pale brown with darker brown areas and weakly contrasting markings. Legs are dirty yellow to brownish black. Wings are hyaline with brown venation and brown pterostigma.
The abdomen is predominantly brown, with segments 8–10 brownish black. Segments 3–7 possess pale basal annules and bluish-white sagittiform markings. Male anal appendages are distinctive: the superior appendages are constricted near the base, flattened dorsally, and bear a small blunt process; the inferior appendages are longer than the superiors, with the distal half strongly narrowed and curved inward.
Female : Unknown
Morphological Characters

1 / 1
Locality
Distribution
Endemic to Halmahera Island, North Maluku, Indonesia. This species is currently known only from Halmahera.
Ecology
Habitat
The holotype was collected at a slowly flowing rivulet (6–8 m wide, 10–30 cm deep), with clear water and mostly shaded conditions, in disturbed primary rainforest.
Remarks
Notes
Belongs to the Drepanosticta megametta species-group, characterized by a pair of flat processes on the posterior pronotal lobe. Within the Moluccan fauna, D. halmahera is distinguished by the unique structure of the male anal appendages.
Literature
References
1 references- 1
van Tol, J. (2007), The Platystictidae of the Moluccas and Misool (Odonata). Dtsch. Entomol. Z., 54: 3-26.