Rhyacopsyche totuma Thomson and Armitage, 2018

Thomson, Robin E. & Armitage, Brian J., 2018, The Trichoptera of Panama. VI. Seven new species of microcaddisflies (Insecta: Trichoptera: Hydroptilidae) from Mount Totumas Cloud Forest and Biological Reserve, Insecta Mundi 613, pp. 1-15 : 5-6

Rhyacopsyche totuma Thomson and Armitage , sp. n.

Fig. 8 .

Diagnosis. Rhyacopsyche totuma is most similar to R. intraspira Wasmund and Holzenthal, 2007 . In both species, the apex of the dorsolateral lobe of segment IX is truncate and bears peglike setae. The apex of the inferior appendage of R. intraspira bears 2 peglike setae ( Wasmund and Holzenthal 2007), while R. totuma bears only one. The membranous portion of the phallus of R. intraspira bears spicules, which are lacking in R. totuma .

Male. Head unmodified, with 3 ocelli; antennae unmodified. Tibial spur count 1, 3, 4. Color in alcohol brown, denuded. Genitalia. Abdominal sternum VII without mesoventral process. Segment VIII unmodified. Segment IX anterolateral margin convex, posterolateral margin with truncate dorsolateral lobe bearing peglike setae. Inferior appendage elongate, setose, curved gradually upwards, apex with triangular emargination and 1 peglike seta. Tergum X membranous, bi-lobed in dorsal view, contracted inside dorsolateral lobes of segment IX. Phallus basally tubular, elongate, narrow, apex membranous and with 2 thickened lateral spines.

Type material. Holotype male— PANAMA: Chiriquí Province: Cuenca 102 (Río Chiriquí Viejo ), Quebrada Norte , Mount Totumas Biological Reserve , 8.873613°N, 82.690512°W, UV-light trap, 1.ix.2016, B. and T. Armitage ( COZEM) . Paratypes —ibid., un. trib., Río Colorado, Mount Totumas Biological Reserve , 8.884717°N, 82.684077°W, Malaise Trap , 7–13.xii.2015, 1 male, J. Dietrich and B. Armitage ( BJA) .

Etymology. Named for Mount Totumas Biological Reserve, the location where the holotype was collected.

Figures

Figure 8. Rhyacopsyche totuma sp. n., male genitalia. A) Segments IX–X, lateral. B) Segments IX–X, dorsal. C) Inferior appendages, ventral. D) Phallus, lateral. E) Phallus, dorsal.