Silvatares laetae Ngirinshuti & Tabaro & Johanson 2019
- The Trichoptera diversity of Nyungwe National Park, Rwanda, with description of a new species in the family Pisuliidae
- Silvatares laetae
Diagnosis The genitalia of Silvatares laetae Ngirinshuti & Johanson sp. nov. resemble those of S. excelsus (Navás, 1931), particularly due to the presence of large median lobes of tergum X that are curved downwards, and the inferior appendages consisting of two prominent lobes which both curve inwards in ventral view. The new species is distinguished from S. excelsus by the presence of a wide mouth-like incision ventrally on the tip of the median lobes of tergum X, segment IX which is produced into a pair of triangular and posteriorly pointing lateral lobes, and the presence of a pair of longer needle-like processes originating from the apex of the phallus. In addition, S. laetae Ngirinshuti & Johanson sp. nov. has sword-shaped megasetae on tergum X that are absent in S. excelsus.
Etymology Laetae, named after Dr Laetitia Nyinawamwiza in recognition of her contribution to supporting young Rwandan academicians interested in research on aquatic biota.
Material examined Holotype RWANDA • 1 ♂ (in alcohol); Western Province, Nyamasheke District, Nyungwe National Park, locality Gisakura, Karamba river I; 2.479 ° S, 29.119 ° E; 1917 m a. s. l.; 18 Oct. 2018; K. A. Johanson, L. Ngirinshuti and P. Munyaneza leg.; light trap # 06 - 2018; DNA voucher LG 8; NHRS. Paratype RWANDA • 1 ♂ (in alcohol); Western Province, Nyamasheke District, Nyungwe National Park, Nyamirabyo River; 2.469 ° S, 29.108 ° E; 1905 m a. s. l.; 23 – 26 Oct. 2018; K. A. Johanson, L. Ngirinshuti and P. Munyaneza leg.; Malaise trap # 23 - 2018; DNA voucher LH 9; NHRS.