Americabaetis alphus Lugo-Ortiz & McCafferty, 1996

Salles, F. F., Raimundi, E. A., Boldrini, R. & Souza-Franco, G. M., 2010, The genus Americabaetis Kluge (Ephemeroptera: Baetidae) in Brazil: new species, stage description, and key to nymphs, Zootaxa 2560 (1), pp. 16-28 : 22

publication ID

https://doi.org/ 10.11646/zootaxa.2560.1.2

DOI

https://doi.org/10.5281/zenodo.5309650

persistent identifier

https://treatment.plazi.org/id/20049746-3C6F-FE30-18B9-FD52FCE9F813

treatment provided by

Felipe

scientific name

Americabaetis alphus Lugo-Ortiz & McCafferty, 1996
status

 

Americabaetis alphus Lugo-Ortiz & McCafferty, 1996  

( Figs. 1b View FIGURE 1 , 20, 23, 24 View FIGURES 18–26 , 28 View FIGURES 27–30 )

Americabaetis alphus Lugo-Ortiz & McCafferty, 1996: 163   ; Francischetti et al., 2003: 69; Salles et al., 2004: 2; Domínguez et al., 2006: 69; Salles et al., 2010: 302 View Cited Treatment .

Diagnoses. Nymphs: 1) frontal keel present; 2) lingua pointed apically; 3) glossa 0.8x length of paraglossa; 4) apex of paraglossa with rows of simple setae; 5) segment II of labial palp with a strong distomedial projection; 6) posterior margin of abdominal terga with pointed spines.

Male imago: 1) turbinate eyes uniformly and widely separated from each other, upper surface ellipsoidal; 2) forceps with first segment not constricted medioapically; 3) posterior margin of subgenital plate without a small rounded projection; 4) length of body relatively small (less than 5.0 mm).

Distribution. ARGENTINA, BOLIVIA, CHILE, PARAGUAY, BRAZIL: Rio Grande do Sul, Santa Catarina, Paraná, Minas Gerais, São Paulo, Rio de Janeiro, Espírito Santo, Mato Grosso, Bahia. NEW RECORDS: Pernambuco, Sergipe, Goiás, Amazonas ( Fig. 1a View FIGURE 1 ).

Comments. Americabaetis alphus   is probably the species of Ephemeroptera   with the widest distributional range in South America, as well as one of the most abundant, at least in Brazil. Their nymphs are found in several biomes and on small streams to large rivers, often associated with marginal vegetation and leaf litter in areas with slow to moderate current ( Fig. 28 View FIGURES 27–30 ). The altitudinal range of this species is also highly variable, specimens were found from the sea level to 1900 m.a.s.l. They were also encountered in pristine to moderately impacted streams, demonstrating that the species is somewhat tolerant, what, in turn, would explain its wide distribution.

Material examined. ALAGOAS, Rio Largo, Afluente do Rio Mandaú , "Lajeiro", S 09°28.496' / W 35°52.303', Vegetação marginal, 15/iii/2004, CNF COL. ( UFVB) GoogleMaps   ; SERGIPE, Japaratuba, Rio da Prata , S 10°37.764' / W 36° 55.451', Vegetação marginal, 18/iii/2004, muitos, CNF COL. ( UFVB) GoogleMaps   ; GOIÁS, Corumbá de   Goiás. Corredeira da Igreja Presbiteriana , acima da calheira, S 15°49’37.1’’ / W 48°46’34.8’’, 26/vi/2003, NH COL. ( INPA) GoogleMaps   ; BAHIA, Correntina. Rio do Mucambo , S 13°16’45.4’’ / W 44°33’52.0’’, pedras roladas em correnteza, 03/viii/2003, NH & FFS COL. ( DZRJ) GoogleMaps   ; AMAZONAS, Presidente Figueiredo, Ig   . Santa Cruz, hidrófitas submersas em correnteza, 08/x/03, FFS ( CEUNES)   ; AMAZONAS, Presidente Figueiredo, Ig. do Km 20, vegetação marginal em correnteza fraca, 07/x/03, F.F.Salles ( CEUNES)   ; ESPÍRITO SANTO, Santa Teresa, Nova Lombardia, Sítio Capitel de Santo Antônio , S 19°52’16.0” / W 40°31’43.3”, 718 m. a.s.l., 19/i/ 2008, FFS col. ( CEUNES) GoogleMaps   ; ESPÍRITO SANTO, Santa Teresa, Nova Lombardia, Sítio Capitel de Santo Antônio , Córrego Grande, S 19°52’31.0” / W 40°31’49.1”, 768 m. a.s.l., 20/i/2008, vegetação marginal, FFS col. ( CEUNES) GoogleMaps   ; ESPÍRITO SANTO, Caparaó , córrego na estrada, S 20°24’05,5’’ / W 41° 453.45,9’’, 1015 m.a.s.l., 21/iv/2008, vegetação marginal, FFS col. ( CEUNES) GoogleMaps   .

CNF

Croatian Mycological Society

UFVB

Vicosa, Universidade Federal de Vicosa, Museum of Entomology

INPA

Instituto Nacional de Pesquisas da Amazonia

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Ephemeroptera

Family

Baetidae

Genus

Americabaetis

Loc

Americabaetis alphus Lugo-Ortiz & McCafferty, 1996

Salles, F. F., Raimundi, E. A., Boldrini, R. & Souza-Franco, G. M. 2010
2010
Loc

Americabaetis alphus

Salles, F. F. & Nascimento, J. M. C. & Massariol, F. C. & Angeli, K. B. & Silva, P. & Rudio, J. A. & Boldrini, R. 2010: 302
Dominguez, E. & Molineri, C. & Pescador, M. L. & Hubbard, M. D. & Nieto, C. 2006: 69
Salles, F. F. & Lugo-Ortiz, C. R. & Da-Silva, E. R. 2004: 2
Francischetti, C. N. & Salles, F. F. & Lugo-Ortiz, C. R. & Da-Silva, E. R. 2003: 69
Lugo-Ortiz, C. R. & McCafferty, W. P. 1996: 163
1996