Orthetrum lusinga Dijkstra

Dijkstra, Klaas-Douwe B., Kipping, Jens & Mézière, Nicolas, 2015, Sixty new dragonfly and damselfly species from Africa (Odonata), Odonatologica 44 (4), pp. 447-678: 639-641

publication ID

http://doi.org/ 10.5281/zenodo.35388

publication LSID

lsid:zoobank.org:pub:A0592344-0F17-4463-8CE2-02900DBB8F20

DOI

http://doi.org/10.5281/zenodo.5640296

persistent identifier

http://treatment.plazi.org/id/03A25264-CADB-FF2E-EF36-FB9C4093FB0F

taxon LSID

lsid:zoobank.org:act:03A25264-CADB-FF2E-EF36-FB9C4093FB0F

treatment provided by

Donat

scientific name

Orthetrum lusinga Dijkstra
status

sp. nov.

Orthetrum lusinga Dijkstra   ZBK   sp. nov. – Spring Skimmer (Type Photo 52, Photo 67, Fig. 31)

Taxonomy

Genetically nearest to the saegeri   -group (see O. agaricum   sp. nov.), which includes the syntopic O. kafwi   sp. nov. ( Tree 8), but has a distinctive hamule shape and is coloured very differently with limited black markings. Treated as a distinct species by Dijkstra & Clausnitzer (2014).

Material studied

Holotype ♂. RMNH.INS. 505542, Congo-Kinshasa, Katanga   , Upemba National Park, source area of Lusinga near park headquarters , spring streams in gallery forest and adjacent bog, dam and channel, 1760 –1800 m a.s.l. (8.933 ° S 27.199 ° E), 15 -xi- 2011, leg. K.-D.B. Dijkstra, RMNH View Materials GoogleMaps   .

Further material. CONGO-KINSHASA ( Katanga   ): 4 ♂ ( RMNH.INS. 505475, RMNH.INS. 505483, RMNH.INS. 505518), 1 ♀ ( RMNH.INS. 505482), as holotype, RMNH View Materials View Materials View Materials View Materials GoogleMaps   . 1 ♂ ( RMNH.INS. 505550), 2 ♀ ( RMNH.INS. 505551), Upemba National Park, Kabwekanono, source area of Kafwi , stream through gallery forest and bogs in open grassy plains, 1770 –1820 m a.s.l. (8.937 ° S 27.166 ° E), 15–16 -xi- 2011, leg. K.-D.B. Dijkstra, RMNH View Materials GoogleMaps   . 2 ♂ ( RMNH.INS. 505675), Kundelungu National Park, source area of Lutshipuka , grassy plateau with pools, bog, wet meadows and gallery forest patches, 1680 – 1705 m a.s.l. (10.58 ° S 27.83 ° E), 23–24 -xi- 2011, leg K.-D.B. Dijkstra, RMNH View Materials GoogleMaps   .

Genetics

Four unique haplotypes (n= 7) are distinct from other saegeri   -group species, but one unique haplotype (n = 1) is similar to O. umbratum   sp. nov. ( Tree 8).

Male morphological diagnosis

Recalls the widespread O. guineense Ris, 1910   and sympatric O. machadoi Longfield, 1955   by (a) moderate size, Hw 28.0– 30.8 mm (n = 7); (b) the absence of cell-doublings in the radial planate and thus a single row of cells there; (c) the pale subcostal Ax at least proximally, although they can be notably dark; and (d) the medium-sized pale brown Pt that are 10–11 % of Hw length, 2.8–3.3 mm. When not pruinose also similar by (e) the thorax lacking whitish stripes; (f) all abdominal segments being brown and variably but generally quite narrowly black on the dorsal carina of S 3–9 and lateral carinae of S 3–8; and (g) the always dark cerci. However, (1) the hook of the hamule has a concave anterior border and a broad and outward-turned tip lying closely against the rather low lobe, i.e., similar to O. chrysostigma (Burmeister, 1839)   but with the sigmoid anterior profile of O. saegeri   ( Fig. 31). When not yet pruinose also (2) unlike O. guineense   lacks a black line on the ventral carina of the metepimeron; and (3) unlike O. machadoi   S 6–8 are only narrowly black on the lateral carinae and S 9–10 are largely brown rather than black.

Etymology

Named after the headquarters of Upemba National Park at the source of the Lusinga   stream, the species’ type locality (noun in apposition).

Range and ecology

Found between 1 680 and 1 820 m a.s.l. at boggy spring areas bordering or enclosed by forest on the otherwise grassy Kibara and Kundelungu Plateaus of Katanga   ( Map 11).

RMNH

Netherlands, Leiden, Nationaal Natuurhistorische Museum ("Naturalis") [formerly Rijksmuseum van Natuurlijke Historie]

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Odonata

Family

Libellulidae

Genus

Orthetrum