Oxyethira , De Souza, Wagner Rafael M. & Santos, Allan Paulo Moreira, 2017

De Souza, Wagner Rafael M. & Santos, Allan Paulo Moreira, 2017, Taxonomic study of the genus Oxyethira Eaton 1873 (Trichoptera: Hydroptilidae) from Northeast Brazil: Eleven new species and distributional records, Zootaxa 4236 (3), pp. 484-506: 493

publication ID

https://doi.org/10.11646/zootaxa.4236.3.4

publication LSID

lsid:zoobank.org:pub:C034B77B-BCC0-46FA-9541-12229A053852

DOI

http://doi.org/10.5281/zenodo.3510558

persistent identifier

http://treatment.plazi.org/id/4B1B3448-FFAF-AC44-E7E8-039DFEE84C5C

treatment provided by

Plazi

scientific name

Oxyethira
status

sp. nov.

Oxyethira  (unplaced) rafaeli  sp. nov.

Fig. 6A –6View FIGURE 6 D

Oxyethira  sp. 5 Takiya et al. 2016: 172 View Cited Treatment

Description. Holotype. Length: 2.0 mm. General color pale brown (in alcohol). Head without modifications. General pattern of Neotropical Oxyethira  . Sternum VII with posterior mesoventral process ( Figs. 6A, 6View FIGURE 6 C).

Male genitalia: Segment VIII annular, covered with setae; sternum VIII with V-shaped posteromesal incision ( Fig. 6AView FIGURE 6); tergum with posterior margin produced into two rounded lobes separated by tiny V-shaped notch ( Fig. 6View FIGURE 6 B). Segment IX retracted in segment VIII, with two pair of dorsal processes: Dorsal pair straight, digitiform, in lateral view slightly curved caudoventrad and reaching posterior margin of segment VIII, ventral pair encircling the first pair laterally, both covered by the lobes of segment VIII in dorsal and lateral views ( Figs. 6View FIGURE 6 B, 6C); sternum produced anteriorly, reaching into posterior area of segment VII, with anterior margin broadly rounded, almost truncate ( Fig. 6AView FIGURE 6); tergum reduced. Inferior appendages short, darkened apically ( Fig. 6AView FIGURE 6); in ventral view fused to sternum IX basally, digitiform and diverging apically ( Fig. 6AView FIGURE 6); in lateral view subrectangular, with nearly same width throughout ( Fig. 6View FIGURE 6 C). Subgenital plate conspicuous; in ventral and dorsal views consisting of two wide, membranous lobes ( Figs. 6A, 6View FIGURE 6 B); in lateral view slightly expanded anteroventrad. Bilobed process with short lobes, each with small apical seta ( Figs. 6A, 6View FIGURE 6 B). Tergum X membranous. Phallus simple, tubular, without spines or processes, apex angled left about 45°; ejaculatory duct not protruding ( Fig. 6View FIGURE 6 D).

Remarks. The new species is similar to O. spissa  and O. diplospissa  sp. nov. in having segment VIII with the posterodorsal margin expanded into two lobes and segment IX bearing dorsal processes. Oxyethira rafaeli  sp. nov. can be differentiated from these by the processes of segment IX, which has one long pair almost straight and digitiform, and another encircling that first pair, both being enclosed within segment VIII; and also by the subgenital plate consisting of two membranous apical lobes.

Etymology. This species is named after the Brazilian entomologist Dr. José Albertino Rafael, who coordinated the project “Pesquisa em Unidades de Conservação do Bioma Caatinga,” which made possible the expeditions to Ubajara (Ceará State) and Piracuruca (Piauí State).

Material examined. Holotype. BRAZIL: Piauí: Piracuruca, Parque Nacional de Sete Cidades , Riacho Piedade , 4°06'34''S, 41°43'39''W, 169 m, 19–21.vi.2012, DM Takiya, JA Rafael, RR Cavichioli & F. Limeira-de- Oliveira cols., Malaise, 1 ♂ ( CZMA)GoogleMaps  . Paratypes. Same data as holotype, except Poço da Bananeira , 4°05'56''S, 41°40'34''W, 189 m, 19.iv.2012, DM Takiya, light trap, 4 ♂ ( DZRJ)GoogleMaps  . Same data as holotype, except, Cachoeira do Riachão , 4°06'58''S, 41°40'13''W, 171 m, 18.iv.2012, DM Takiya, light trap, 3 ♂ ( DZRJ)GoogleMaps  . Bahia: Piatã, Fazenda Machado, riacho Machado , 13°11'00”S, 41°46'00”W [aproximate coordinate], 30.vi.2010, AR Calor, light trap, 4 ♂ (MZUFBA).GoogleMaps 

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Trichoptera

Family

Hydroptilidae

Loc

Oxyethira

De Souza, Wagner Rafael M. & Santos, Allan Paulo Moreira 2017
2017
Loc

Oxyethira

Takiya 2016: 172
2016