Cerasmatrichia garfioza, Harris & Armitage, 2023

Harris, Steven C. & Armitage, Brian J., 2023, The Trichoptera of Panama XXII. Sixteen new microcaddisfly species (Trichoptera, Hydroptilidae), ZooKeys 1174, pp. 35-74 : 35

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scientific name

Cerasmatrichia garfioza

sp. nov.

Cerasmatrichia garfioza sp. nov.

Fig. 6 View Figure 6

Type locality.

Panama: Veraguas Province: Cuenca 132; Veraguas Province; Cuenca 132; Santa Fe District; Santa Fe NP; Quebrada Mulabá; PSPSCB-PNSF-C132-2017-008; 8.51706°N, 81.12140°W; 770 m a.s.l.

Type specimen.

Holotype, male. Panama: Veraguas Province: Cuenca 132; Veraguas Province; Cuenca 132; Santa Fe District; Santa Fe NP; Quebrada Mulabá; PSPSCB-PNSF-C132-2017-008; 8.51706°N, 81.12140°W; 770 m a.s.l.; Malaise trap; T. Ríos, E. Álvarez, C. Nieto, leg.; 19-23.iv.2017; MIUP-004-T-2023 (in alcohol).

Other material examined.

Panama: Chiriqui Province • 1 male, Cuenca 108; Boquete District; Quebrada Jaramillo ; off Jaramillo Alto Rd. ; Collier property; 8.76320°N, 82.41383°W; 1259 m a.s.l.; Malaise trap; K. Collier, leg.; 8-12.v.2018; MUPADI GoogleMaps .


This species is similar to C. akanthos Armitage & Harris, from Panama, as well as C. hidala Oláh & Johanson from Peru, but as noted in the descriptions of these species, they do not fit well within the generic limits of Cerasmatrichia . As with both these species, C. garfioza sp. nov. has three ocelli, the leg spurs are 1,3,4, and the phallus is tubular, all characteristic of the genus. In common with C. hidala , the forewing of this new species has a small scaly area. Cerasmatrichia garfioza sp. nov. is easily identified by the sclerotized hook-like process on abdominal segment IX.


Male. Total length 2.2-2.4 mm, head unmodified, antennae with 21 segments, scape and pedicel each twice as long as proximal flagellomeres, forewings dark brown with pair of white bands at midlength and apex, small scaly patch along dorsal margin, body brown in alcohol. G enitalia. Abdominal segment VII annular with small ventromesal process. Segment VIII tapering ventrad on posterior margin; in ventral view, broadly and deeply emarginate; in dorsal view squarish, slightly emarginated posteriorly. Segment IX somewhat rectanguloid, anteriorly tapering to rounded ventral point, posteriorly divided into two sections, anterior section tapering posteriorly, bearing stout setae on margin, posterior section truncate distally, bearing elongate hooklike sclerotized process posterodorsally; in dorsal view elongate, shallowly emarginate posteriorly, deeply emarginate anteriorly; in ventral view deeply incised posteriorly, with row of elongate setae on mesal margin. Segment X shelflike in lateral view; in dorsal view triangular, membranous distally. Inferior appendage thin and elongate, widening distally and upturned; in ventral view narrow over length, curving outward distally to acute points. Subgenital plate narrow in lateral view, divided posteriorly into elongate dorsal process and shorter ventral process; in ventral view, lower portion rectangular, abruptly narrowing distally to pair of short processes. Phallus tubular, in lateral view narrowing near midlength, apical portion cylindrical with cluster of elongate sclerotized rods; in dorsal view cylindrical apically, pair of diverging, subapical rods.




The species name ' Cerasmatrichia garfioza ' (hook) derives from Spanish, referring to the posterodorsal hooklike process on segment IX. The name is a noun in the nominative singular standing in apposition.