The Trichoptera of Panama XXII. Sixteen new microcaddisfly species (Trichoptera, Hydroptilidae) Author Harris, Steven C. https://orcid.org/0000-0002-6432-7462 Department of Biology and Environmental Sciences, Western Pennsylvania University, Clarion, PA 16214, USA & Museo de Peces de Agua Dulce e Invertebrados, Universidad Autonoma de Chiriqui, David, Panama Author Armitage, Brian J. https://orcid.org/0000-0003-3182-1533 Museo de Peces de Agua Dulce e Invertebrados, Universidad Autonoma de Chiriqui, David, Panama tobikera89@gmail.com text ZooKeys 2023 2023-08-08 1174 35 74 http://dx.doi.org/10.3897/zookeys.1174.107314 journal article http://dx.doi.org/10.3897/zookeys.1174.107314 1313-2970-1174-35 91E908240C45471A86BBA24ADC35E743 635A059AEF505E17B338F6484B5F4DBF Ochrotrichia paraflagellata sp. nov. Fig. 16 Type locality. Panama: Veraguas Province : Cuenca 097; Santa Fe District; Santa Fe NP; Quebrada sin nombre; PSPSCB-PNSF-C-097-2017-006; 8.55038°N , 81.16486°W ; 515 m a.s.l. Type specimen. Holotype : male, Panama: Veraguas Province : Cuenca 097; Santa Fe District; Santa Fe NP; Quebrada sin nombre; PSPSCB-PNSF-C-097-2017-006; 8.55038°N , 81.16486°W ; 515 m a.s.l.; UV light trap; A. Cornejo,T. Rios , E. Alvarez , C. Nieto, leg.; 20.iv.2017; MIUP-014-T-2023 (in alcohol). Other material examined. Panama : Veraguas Province • 2 males , Rio Calovebora ; Santa Fe District ; Santa Fe NP ; PSPSCB-NPSF-C-097-2017-005; 8.54318°N , 81.16398°W ; 536 m a.s.l. ; Malaise trap ; T. Rios , E. Alvarez , C. Nieto , leg.; 19-23.iv.2017 ; MUPADI . Diagnosis. This species is most similar to O. flagellata Flint and O. birdae Harris & Armitage, both of which occur in Panama. It differs from these species primarily in the appearance of the phallic apex. In O. flagellata the phallus apex has a prominent loop, in O. birdae this loop is absent, and in the new species this loop is replaced by two short acute processes. Additionally, the apex of the tenth tergite in O. paraflagellata sp. nov. is asymmetrical, but it is symmetrical in the other two species and there is a ventromesal process from abdominal segment VII which is not found in the other two species. Figure 16. Ochrotrichia paraflagellata sp. nov., male holotype, genitalia A left lateral B ventral C dorsal D phallus, dorsal E phallus, left lateral. Description. Male. Total length 2.2-2.4 mm, 28 antennal segments, wings and body brown in alcohol. Genitalia . Abdominal segment VII annular with short ventromesal process. Segment VIII in lateral view truncate posteroventrally, narrowing dorsad, anterior margin tapering ventrad; reduced dorsally and apparently fused with IX, ventrally generally quadrate. Segment IX greatly reduced laterally; in dorsal view deeply incised, producing elongate lateral lobes. Segment X elongate in lateral view, wide basally, narrowing posteriorly, to narrow acute apex; in dorsal view rectangular, apex narrowing on one side to rounded apex. Inferior appendage parallel-sided, curving at midlength to rounded apex, numerous peg-like setae on inner margin; in ventral view, wide basally, curving on inner margin to rounded apex, peg-like setae at base and apex. Phallus in lateral and dorsal view thin over length, but wider basally, apex divided into pair of short acute processes, one projecting forward, the other backwards. Distribution. Panama. Etymology. The species name Ochrotrichia paraflagellata ( Ochrotrichia flagellata -like) derives from Spanish, referring its resemblance to Ochrotrichia flagellata .