Acisoma attenboroughi , Mens, Lotte P., Schütte, Kai, Stokvis, Frank R. & Dijkstra, Klaas-Douwe B., 2016

Mens, Lotte P., Schütte, Kai, Stokvis, Frank R. & Dijkstra, Klaas-Douwe B., 2016, Six, not two, species of Acisoma pintail dragonfly (Odonata: Libellulidae), Zootaxa 4109 (2), pp. 153-172: 163-166

publication ID

http://doi.org/10.11646/zootaxa.4109.2.3

publication LSID

lsid:zoobank.org:pub:3DF4E74C-F422-48AD-AFEE-F3B0FEA8F443

persistent identifier

http://treatment.plazi.org/id/244B882F-2324-7621-FF71-25E5FD75A717

treatment provided by

Plazi

scientific name

Acisoma attenboroughi
status

sp. nov.

Acisoma attenboroughi  sp. nov. —Attenborough’s Pintail

( Figs. 4 View Figure E, 5 A–C, 5 F–G, 6 E–F, 7 D, 8 D, 10 D, 11)

Type material. Holotype ( Fig. 11 View Figure ): male, Andasibe, lake Toamasina, 12 -xii- 2006, K. Schütte ( ZMUHAbout ZMUH).

Other material. Madagascar: 1 male, Ankarafantsika National Park, Ampijoroa, 06-iii- 2001, G. Garcia ( RMNHAbout RMNH); 1 male, Tananarive, 21 -iii- 1985, F. Keiser ( RMNHAbout RMNH); 1 male, locality unknown, 1993, J.M. Elouard ( MNHNAbout MNHN); 1 male, Madagascar, Coll. Martin ( MNHNAbout MNHN); 7 males, Andasibe, lake Toamasina, 12 -xii- 2006, K. Schütte ( ZMUHAbout ZMUH); 5 males, Andasibe, river Toamasina, 12 -xii- 2006, K. Schütte ( ZMUHAbout ZMUH); 7 males, Fort-Dauphin, Amboavola, 28 -xi- 2006, K. Schütte ( ZMUHAbout ZMUH); 1 male, Fort-Dauphin, Tsimelahy, 1.5km de accueil, 01-x- 2006, K. Schütte ( ZMUHAbout ZMUH); 1 male, Fort-Dauphin, Enato, 26 -x- 2006, K. Schütte ( ZMUHAbout ZMUH); 1 male, Fianarantsoa, Ranomafana, ValBio field station next to river, 01-xi- 2006, K. Schütte ( ZMUHAbout ZMUH); 3 males, Tolongoina, coffee plantation, 10 -xi- 2006, K. Schütte ( ZMUHAbout ZMUH); 1 male, Tolongoina, tavy in forest, 04-xi- 2006, K. Schütte ( ZMUHAbout ZMUH).

Etymology. The new species honours Sir David Attenborough on his 90 th birthday. His documentaries inspired entire generations to love and conserve nature ( Dijkstra 2016).

Male diagnosis. Confined to Madagascar, where easily identified by the characters typical of the group lumped formerly under A. panorpoides  : (a) extensively white labrum, labium, thorax and underside of S 3–7; (b) 1 cell in Fw triangle; (c) fairly long Fw Pt, about 11–14 % as long as Hw; (d) abdomen that narrows abruptly on S 5 in lateral view, with S 6–10 slender ( Fig. 7 View Figure D); (e) fragmented and frayed white markings on S 2–5 and large white lateral spots on S 7 ( Fig. 7 View Figure D); and (f) broad and triangular lobe of hamule ( Fig. 8 View Figure D). Unique in the genus by the (1) dorso-central black spot on the mesepisternum that is shifted toward and fused with the black humeral stripe ( Fig. 6 View Figure E–F); and (2) S 4 typically with all black ventral carina but partly white ventro-apical carina, although the latter is all black in about 10 % of cases ( Fig. 7 View Figure D). The shape and general appearance is intermediate between A. panorpoides  from Asia and A. inflatum  from Africa, with a (3) stout abdomen, with S 6 about 1.5 x to 2 x as long as high, and a fairly distinct ‘step’ between the ventral borders of S 5 and S 6 ( Fig. 7 View Figure D). Differs from A. panorpoides  by the (4) wide black band across the antefrons, which is 40–80 % as wide as the labrum is high ( Fig. 4 View Figure E); (5) large black spot on the labrum attached to its base ( Fig. 4 View Figure E); and (6) always incomplete distal Ax in Fw; and from A. inflatum  by the (7) sublateral black marking concentrated on apical side of S 4 ( Fig. 7 View Figure D); and (8) more slender hook of the hamule ( Fig. 8 View Figure D).

Range and ecology. Widespread across Madagascar, including the interior, at weedy ponds such as abandoned rice fields. Found down to the coast in the east (Toamasina, Tolagnaro) and west (Mahajanga) but not in the littoral forests where A. ascalaphoides  occurs ( Fig. 9 View Figure A).

ZMUH

Zoologisches Institut und Zoologisches Museum, Universitat Hamburg

RMNH

National Museum of Natural History, Naturalis

MNHN

Museum National d'Histoire Naturelle

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Odonata

Family

Libellulidae

Genus

Acisoma