Leucotrichia cortadera, Thomson & Armitage & Harris, 2022

Thomson, Robin E., Armitage, Brian J. & Harris, Steven C., 2022, The Trichoptera of Panama. XIX. Additions to and a review of the genus Leucotrichia (Trichoptera, Hydroptilidae) in Panama, ZooKeys 1111, pp. 425-466 : 425

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scientific name

Leucotrichia cortadera

sp. nov.

Leucotrichia cortadera sp. nov.

Fig. 5 View Figure 5

Type locality.

Panama: Chiriqui Province: Cuenca 108; Boquete District; Quebrada Jaramillo, Finca Monterey; 8.7632°N, 82.41383°W; 1,214 m a.s.l.

Type material.

Holotype: male, Panama: Chiriqui Province: Cuenca 108; Boquete District; Quebrada Jaramillo, Finca Monterey; 8.7632°N, 82.41383°W; 1,214 m a.s.l.; 16-20 Jun. 2018, K. Collier, leg.; Malaise trap; in alcohol; MIUP-001-T-2021. Paratype: Panama: Chiriqui Province: 1 male; Dolega District, Río Majagua, Banquito de Palmira, Potrerillos; 8.68093°N, 82.53276°W; 840 m a.s.l.; 19 Jul.-1 Aug. 2019, Y. Aguirre, T. Ríos, leg.; Malaise trap (M002); in alcohol; UMSP.


Leucotrichia cortadera sp. nov. is similar to L. fulminea Thomson & Holzenthal, 2015, a species endemic to Ecuador. Both species bear a pair of large, distinct sclerotized plates on the phallus apex. Leucotrichia cortadera can be separated by the small spines present on the dorsolateral surface of the phallus apex, which are absent in L. fulminea . Additionally, the inferior appendages are separate in L. fulminea , while they are fused in L. cortadera .


Male. Length of forewing 2.1 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. 5A, D View Figure 5 ). Sternum VIII with rounded posteroventral production in lateral view (Fig. 5A View Figure 5 ); in ventral view, posterior margin concave with broadly rounded mesal projection (Fig. 5D View Figure 5 ). Segment IX anterolateral margin convex, posterolateral margin straight with slight irregularity (Fig. 5B View Figure 5 ); dorsally, anterior margin concave, posterior margin concave with broadly rounded mesal projection (Fig. 5C View Figure 5 ). Tergum X with dorsal sclerite small, irregular; ventral sclerite with upper half rounded and bent posteriad; membranous apex suborbicular (Fig. 5B, C View Figure 5 ). Subgenital plate with dorsal arm simple, extending dorsad, apex acute (Fig. 5B View Figure 5 ); ventral arm simple, apex with emargination, in ventral view slightly restricted mesally, apex with broad emargination (Fig. 5B, D View Figure 5 ). Inferior appendage narrow basally, broadest submesally, with single dorsal subapical spine (Fig. 5B View Figure 5 ); ventrally entirely fused, broadest mesally, apex rounded with small pointed mesal emargination (Fig. 5D View Figure 5 ). Phallus tubular basally, constricted at midlength with median complex bearing spherical “windows”; apex membranous and bearing pair of large, acute sclerotized plates and numerous small apical spines on dorsal and lateral surface (Fig. 5E, F View Figure 5 ).




The specific epithet is derived from cortadera, Spanish for "knife, cutting instrument", referring to the shape of the large sclerotized plates found on the phallus apex.