Discozantaena
Creators: name: Perkins, Philip D.
Publisher: name: Zenodo
Year: 2005
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Hydraenidae
Discozantaena

description: Key to Species of Discozantaena
1. Elytral margin not widely explanate; clypeus not widened laterally, not shelf­like (Fig.1) ............................................................................................................ sequentia n. sp.
­ Elytral margin widely explanate; clypeus widened at anterior angles, shelf­like ......... 2
2. Anterior margin of clypeus straight............................................................................... 3
­ Anterior margin of clypeus emarginate......................................................................... 5
3. Pronotal disc with granules much denser in impressions than on shining relief (Fig. 3) ................................................................................................ drakensbergensis n. sp.
­ Pronotal discal relief more markedly granulate ............................................................ 4
4. Body form broader, pronotum width/length ratio ca. 1.90 (Fig. 8). .......... ovata n. sp.
­ Body form less broad, pronotum width/length ratio ca 1.76 (Fig. 2)... endroedyi n. sp.
5. Sides of pronotum straight ........................................................................................... 6
­ Sides of pronotum arcuate............................................................................................. 8
6. Pronotum on each side with large, moderately convex non­granulate area (Fig. 9) ...... ................................................................................................................. tibiovela n. sp.
­ Pronotum on each side more uniformly granulate ........................................................ 7
7. Pronotum more transverse, width/length ratio ca. 1.79; body smaller, length ca. 1.71 mm; explanate margin of elytra narrower (Fig. 5) .............................. brevicollis n. sp.
­ Pronotum less transverse, width/length ratio ca. 1.90; body larger, length ca. 2.05 mm; explanate margin of elytra very wide (Fig. 6)............................................. galea n. sp.
8. Frons disc with granules absent or very fine and very sparse; body larger, length ca. 2.03 mm (Fig. 7)........................................................................................ karroo n. sp.
­ Frons disc with distinct granules; body smaller, length ca. 1.80 mm or less ................ 9
9. Elytra shorter, elytra length/pronotum length ratio ca. 2.44; elytra very acuminate posteriorly and markedly peaked at suture (Fig. 11) ...................................... sepiola n. sp.
­ Elytra longer, elytra length/pronotum length ratio ca. 2.70 or greater; elytra not markedly acuminate posteriorly, less peaked at suture ...................................................... 10
10. Elytral humeri present; aedeagus as illustrated (Figs. 4, 15) .......................................... ...................................................................... genuvela Perkins and Balfour­Browne
­ Elytral humeri absent; aedeagus as illustrated (Figs. 10, 21).................... leleupi n. sp.
description: Published as part of Perkins, Philip D., 2005, A revision of the South African endemic humicolous beetle genus Discozantaena Perkins and Balfour­Browne (Coleoptera: Hydraenidae), pp. 1-48 in Zootaxa 915 on pages 6-7, DOI: 10.5281/zenodo.171035