Oxyethira jaramillo, Armitage & Harris & Rodriguez, 2025

Armitage, Brian J., Harris, Steven C. & Rodriguez, Viterbo, 2025, The Trichoptera of Panama XXVIII. Nine new species of microcaddisflies (Trichoptera, Hydroptilidae), Neotropical Biology and Conservation 20 (2), pp. 125-147 : 125-147

Oxyethira jaramillo sp. nov.

Fig. 2

Type locality.

Panama: Chiriqui Province, Cuenca 108, Boquete District, Quebrada Jaramillo Abajo; 8.745827°N, 82.418083°W, 1059 m a. s. l.

Type specimen.

Holotype • ♂, in alcohol. Original label: “ Panama: Chiriqui Province, Cuenca 108, Boquete District, Quebrada Jaramillo Abajo ; 8.745827°N, 82.418083°W, 1059 m a. s. l.; 9 Mar 2019; leg K. Castillo; UV light trap "; MUPADI .

Diagnosis.

Oxyethira jaramillo sp. nov. is related to a number of species which have elongate dorsal processes from segment IX, such as O. bidentata (Mosely) , O. culebra Holzenthal & Harris and other members of the O. aeola group ( Kelley 1984). The new species differs in the uneven nature of the dorsal processes from IX with a knobbed apex, which, in the related species, are of equal length and acute apically and in the divided inferior appendage, which is entire in the similar species.

Description.

Male. Total length 2.8 mm (n = 1), 29 antennal segments, wings and body brown in alcohol. G enitalia (Fig. 2 ). Abdominal segment VII annular, with pointed ventromesal process. Segment VIII in lateral view elongate, tapering posteroventrally; in dorsal view, annular; in ventral view, deep V-shaped mesal incision. Segment IX retracted into segments VI, VII and VIII, in lateral view thin, dorsal processes narrowing posteriorly; in dorsal and ventral views, rounded anteriorly, posteriorly reduced to a pair of thin asymmetrical processes, the left side much longer than the right and knobbed apically. Segment X in lateral view truncate; in dorsal view, rounded distally and membranous. Subgenital plate in lateral view divided posteriorly, lower portion shelf-like, upper portion curving downwards; in dorsal and ventral view, with broad mesal incision, pair of thin, setal-bearing arms posteriorly. Inferior appendage in lateral view divided into three rectangular processes, dorsal-most process elongate; in ventral view, pair of lateral processes of uneven length and shape, inner process triangular and short. Phallus in dorsal view thin and sinuate, small rounded knob at apex.

Female and immature stages.

Unknown.

Etymology.

Named after both the type waterbody, Quebrada Jaramillo, in the western Panamanian highlands and the reversal of the earth’s polarity ~ 900,000 years ago, referred to as the Jaramillo Event ( Cox et al. 1963). This latter event was named after Jaramillo Creek in the Jemez Mountains in New Mexico, USA. The word “ Jaramillo ” is derived from the Spanish word “ jaral ”, meaning rockrose shrub, with the suffix “ illo ” forming a diminutive; thus “ little rockrose shrub ”. The name is a noun in the genitive case.

Figures

Figure 2. Oxyethira jaramillo sp. nov., male holotype, genitalia A left lateral B dorsal C ventral D phallus, dorsal.