Umma gumma Dijkstra, Mézière & Kipping

Dijkstra, Klaas-Douwe B., Kipping, Jens & Mézière, Nicolas, 2015, Sixty new dragonfly and damselfly species from Africa (Odonata), Odonatologica 44 (4), pp. 447-678: 457-460

publication ID

10.5281/zenodo.35388

publication LSID

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

persistent identifier

http://treatment.plazi.org/id/03A25264-CA15-FFFA-EF37-FB524211FE1F

taxon LSID

lsid:zoobank.org:act:03A25264-CA15-FFFA-EF37-FB524211FE1F

treatment provided by

Donat

scientific name

Umma gumma Dijkstra, Mézière & Kipping
status

sp. nov.

Umma gumma Dijkstra, Mézière & Kipping  ZBK  sp. nov. – Robust Sparklewing

(Type Photo 1 View Figure , Photos 1–2View Photo 1View Photo 2, Fig. 1 View Figure )

Taxonomy

Pinhey (1969) remarked that the variability of U. longistigma (Selys, 1869)  might conceal unnamed taxa. Vick (1999) noted that two forms with different paraprocts occur together in Cameroon, the typical one having more slender paraprocts, as confirmed by the holotype of U. longistigma  from that nation in ISNB ( Fig. 1 View Figure ). Both forms overlap widely across central Africa, are easily separated by other characters as well, and differ genetically where they co-occur in Gabon, thus representing good species.

Material studied

Holotype ♂. RMNH.INS. 554425, Gabon, Haut-Ogooué Province, Alanga- Aboumi road, Moyol, gravelly and sandy forest river (2–3 m wide, 10–50 cm deep) , 424 m a.s.l. (0.8403 ° S 13.9385 ° E), 28 -ix- 2012, leg. N. Mézière, RMNH View MaterialsGoogleMaps  .

Further material. CAMEROON (South Province): 1 ♂, 26 km E of Campo, Campo-Ma’an National Park (buffer zone), Bitandé River 1 km E of Nkoélon, rocky rainforest river and adjacent roadsides , 70–100 m a.s.l. (2.3940 ° N 10.0540 ° E), 16 -vi- 2008, leg. K.- D.B. Dijkstra, J. Kipping & K. Schütte, RMNHGoogleMaps  . CONGO-BRAZZAVILLE (Region de Koulilou): 1 ♂, Conkouati National Park , forest, 50 m a.s.l. (3.7951 ° S 11.3859 ° E), 25–26 -xi- - 2010, leg. P.H. Lambret, RMNHGoogleMaps  . CONGO-KINSHASA (Province Orientale): 1 ♂, Lilanda and Baombo streams at and upstream of Lilanda and Yafake villages , sandy clear and blackwater streams and river, 390–450 m a.s.l. (0.83 ° N 24.34 ° E), 04-v- 2010, leg. K.- D.B. Dijkstra, RMNHGoogleMaps  . 1 ♂, 20 km NW of Lokutu, between Lukomete and Lunua River , forest streams and clearings, 375–400 m a.s.l. (1.275 ° N 23.425 ° E), 01–06-xi- 2004, leg. K.- D.B. Dijkstra, RMNHGoogleMaps  . 1 ♂, 20 km NW of Lokutu, large shallow, sandy, clear stream (3–5 m wide) in disturbed forest, 410 m a.s.l. (1.0866 ° N 23.5368 ° E), 01- xi- 2004, leg. K.- D.B. Dijkstra, RMNHGoogleMaps  . 3 ♂, Ubundu Road, Yoko Forest, Mokonoka Stream , rock-bottomed (and some sand, gravel, leaflitter) stream and small tributaries in rainforest, 413 m a.s.l. (0.2940 ° N 25.2888 ° E), 08- vi- 2010, leg. K.- D.B. Dijkstra, RMNHGoogleMaps  . GABON (Estuaire Province): 1 ♂ ( RMNH.INS. 508732), Kougouleu-Medouneu road, Monts de Cristal, Assegone-Essala , mountain stream with rapids and small falls (2–4 m wide, 50 cm deep), 316 m a.s.l. (0.5596 ° S 10.2362 ° E), 28 -xii- 2012, leg N. Mézière, RMNH View MaterialsGoogleMaps  . GABON (Haut-Ogooué Province): 1 ♂, Ndjima , 618 m a.s.l. (1.6643 ° S 13.0958 ° E), 21 -ii- 2009, leg. N. Mézière, RMNHGoogleMaps  . 1 ♂, Plateau d’Okouma, road to Vuku, Mounana, gravel-bottomed stream (1–2 m wide) in grassland, 507 m a.s.l. (1.3998 ° S 13.1920 ° E), 18 -ii- 2009, leg. N. Mézière, RMNHGoogleMaps  . 1 ♂ ( RMNH.INS. 506164), righthand road before “Africa No 1 ” radio station in the direction of Franceville, Moyabi , sandy forest river (4 m wide,> 50 cm deep) bordered by ponds, 483 m a.s.l. (0.6476 ° S 13.6800° E), 27 -iii- 2012, leg. N. Mézière, RMNH View MaterialsGoogleMaps  . 1 ♂ ( RMNH.INS. 554468), same locality, small gravelly and sandy forest stream bordered by swamp and springs, 474 m a.s.l. (1.6877 °S 13.3113 °E), 04-xi- 2012, leg. N. Mézière, RMNHGoogleMaps  . 8 ♂, Moyabi, concession Rougier, 17 km SSE of Moanda , large sandy stream in dense forest ( Photo 2 View Figure ), 398 m a.s.l. (1.7065 °S 13.2558 °E), 24 -ix- 2013, leg. J. Kipping, CJKLGoogleMaps  . 1 ♂, same locality, same date, leg. A. Günther, CAGFGoogleMaps  . 1 ♂, same locality, 17 -ix-2013GoogleMaps  , 1♂ same locality, 01-x- 2013, leg. J. Kipping, CJKLGoogleMaps  .

Genetics

Four unique haplotypes (n= 4) nearest to but distinct from eleven of true U.longistigma  (n = 14).

Male morphological diagnosis

Similar to sympatric sister-species U. longistigma  by the combination of (a) a uniformly green to blue metallic head, thorax and abdomen, but dark brown to black legs and poststernum; (b) the largely pale rather than dark mandibular bases; (c) the sparse whitish hairs on the poststernum, rather than a dense patch of long dark hairs; (d) 6–10 cross-veins in the Fw quadrilateral cell; (e)the large Pt with an acute proximal corner, 2.7 –3.2 mm; (f) the absence of a clump of thick bristles near the tips of the cerci; and (g)paraprocts that are almost as long as the cerci ( Fig. 1 View Figure ). However, is (1)larger with Hw 31.5 – 35.0 mm (mean 33.6; n = 15) rather than 30.0–33.0 mm (31.9; n = 20), with notably more robust build; (2) has a largely pale anterior face to each basal antennal segment, which is entirely dark in most U. longistigma  specimens, although about a third have indistinct or partial markings; (3)no expansion on the bend of the penis’s lateral lobes, but their tips are more widened instead; (4)wide-based cerci that do not expand notably distally and end in unmodified rounded or squarish tips, while in U. longistigma  the internal flanges widen notably towards the tips, which bear a transverse ridge and hollow, with often a subapical notch or tooth where the flange and ridge meet; and (5) paraprocts that are broad throughout with square-cut tips bearing an inward-directed tooth, rather than slender and tapering to rounded hooked tips ( Fig. 1 View Figure ).

Etymology

Name refers to the classic 1969 Pink Floyd album » Ummagumma « (noun in apposition). Range and ecology

Three Umma Kirby, 1890  species overlap widely in central Africa’s rainforests: U. mesostigma (Selys, 1879)  – including the probably synonymous U. saphirina Förster, 1916  – is found closest to the source on often gravelly sections, while U. longistigma  and U. gumma  appear to co-occur on larger and often sandy streams ( Photo 2 View Figure ). The new species has been recorded up to 620 m a.s.l. and favours less shady sections, occurs at lower densities, and comes down to the water only with brighter sunshine.

ISNB

Belgium, Brussels, Institut Royal des Sciences Naturelles de Belgique

RMNH

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

CJKL

CJKL

CAGF

CAGF