Rhyacopsyche chichotla Bueno & Hamilton

Wasmund, Anne M. & Holzenthal, Ralph W., 2007, A revision of the Neotropical caddisfly genus Rhyacopsyche, with the description of 13 new species (Trichoptera: Hydroptilidae), Zootaxa 1634, pp. 1-59 : 9

publication ID	https://doi.org/ 10.5281/zenodo.179477
DOI	https://doi.org/10.5281/zenodo.6249675
persistent identifier	https://treatment.plazi.org/id/039087E8-FFE3-F612-FF09-FCFB66C814F9
treatment provided by	Plazi
scientific name	Rhyacopsyche chichotla Bueno & Hamilton
status

Treatment

Rhyacopsyche chichotla Bueno & Hamilton View in CoL

Fig. 9 View FIGURE 9

Rhyacopsyche chichotla Bueno and Hamilton, 1986:303 View in CoL [Type locality: Mexico, Oaxaca, 7km NE Huautla de Jimenez; NMNH; male].

Rhyacopsyche chichotla View in CoL , R. colombiana , new species, R. mexicana View in CoL , and R. torulosa View in CoL are all similar in the form of both the dorsolateral lobe and the inferior appendage. Among these, R. chichotla View in CoL is the only species lacking peglike setae on the inferior appendage. It can also be diagnosed by the pointed, hooklike apex of the inferior appendage.

Adult (male: n=1). Forewing length 2.6 mm. Color in alcohol, dark brown. Sternum VII without apicomesal point.

Male genitalia. Abdominal segment IX heavily setose, anterior margin slightly rounded; sternum IX, in lateral view, with posterior margin lanceolate; posterior margin nearly straight; dorsolateral lobe of segment IX elongate, in dorsal view narrowed, deeply divided, widely separated, apex bearing several short, dark, peglike setae. Tergum X partially retracted inside segment IX, articulating with intermediate appendage. Intermediate appendage produced into small slender plate lying mesad of inferior appendage, in ventral view, plate slightly cordate. Inferior appendage elongate, sparsely setose, dorsal margin enlarged at middle, narrowing to laterally directed point, bearing no peglike setae. Phallus linear, thin membranous sheath surrounding the middle of the phallus, covered with spicules; central tubule with truncate apex, apex of lateral process rounded.

Material examined. MEXICO: Oaxaca: near junctions of roads to Santa Maria Chichotla and Huautla de Jimenez, along road to Santa Maria Chichotla , 3800–4000 ft, 9.vii.1982, R W Holzenthal — 1 male (holotype, NMNH).

Distribution. Mexico.