Leucotrichia holzenthali sp. nov.

Fig. 9

Type locality.

Panama: Veraguas Province: Cuenca 097; Santa Fe District; Santa Fe National Park; Río Piedra de Moler; PSPSCB-PNSF-C097-2017-011; 8.55343°N, 81.17675°W; 395 m a.s.l.

Type material.

Holotype: male, Panama: Veraguas Province: Cuenca 097; Santa Fe District; Santa Fe National Park; Río Piedra de Moler; PSPSCB-PNSF-C097-2017-011; 8.55343°N, 81.17675°W; 395 m a.s.l.; 20 Apr. 2017; A. Cornejo, T. Ríos, E. Álvarez, C. Nieto, leg.; UV light trap; in alcohol; MIUP-002-T-2021. Paratype: same data as for holotype; 1 male; UMSP.

Diagnosis.

Leucotrichia holzenthali sp. nov., is similar to L. dinamica Bueno-Soria, 2010, a species currently known only from Mexico. Both species bear a pair of large scissor-like sclerites on the apex of the phallus. Leucotrichia holzenthali can be distinguished by the additional pair of ventral sclerites on the phallus apex and the peg-like setae on abdominal sternum VIII, both characteristics that are absent on L. dinamica .

Description.

Male. Length of forewing 1.7 mm (n = 2). Wings unmodified. Head unmodified, with three ocelli; antennae unmodified. Tibial spur count 1, 3, 4. Color in alcohol brown. Genitalia. Abdominal sternum VII mesoventral process with enlarged apex (Fig. 9A, D). Sternum VIII with posteroventral production bearing prominent peg-like setae (Fig. 9A), in ventral view posterior margin concave (Fig. 9D). Segment IX anterolateral margin convex, posterolateral margin irregular (Fig. 9B); dorsally, anterior margin concave, posterior margin broadly concave (Fig. 9C). Tergum X with dorsal sclerite not apparent; ventral sclerite broadest mesally with slender ventral apex; membranous apex subtriangular in dorsal view (Fig. 9B, C). Subgenital plate with dorsal arm simple, extending posteriad, apex acute (Fig. 9B); ventral arm simple, apex with emargination, in ventral view with truncate base and rounded apical emargination (Fig. 9B, D). Inferior appendage broadest basally, with pointed basal emargination, prominent dorsal subapical seta, apex acute (Fig. 9B); ventrally broadly fused, broadest basally, apex rounded (Fig. 9D). Phallus tubular basally, constricted at midlength with median complex bearing spherical “windows”; apex membranous, bearing pair of large scissor-like apical sclerites dorsally and pair of large acute sclerites ventrally (Fig. 9E, F).

Distribution.

Panama.

Etymology.

Named in honor of Dr. Ralph W. Holzenthal, for a long and robust career in caddisfly taxonomy and systematics. Dr. Holzenthal has been a friend and colleague to each of the authors, and an invaluable mentor in particular to the first author.