Macunahyphes zagaia, Paula Malaquias Souto & Frederico Falcão Salles, 2016

Paula Malaquias Souto & Frederico Falcão Salles, 2016, New species of Macunahyphes Dias, Salles & Molineri (Ephemeroptera: Leptohyphidae), with taxonomic notes, European Journal of Taxonomy 254, pp. 1-15 : 11-12

Macunahyphes zagaia sp. nov.

urn:lsid:zoobank.org:act:B03C7E64-F237-418A-8D8B-ED42BF38AA66

Figs 2 A, 3B

Diagnosis

The male of M. zagaia sp. nov. can be distinguished from all congeners by the following combination of characteristics: 1) longitudinal vein CuP absent; 2) membranous filaments of mesoscutellum absent; 3) segment II of forceps with a basal swelling; 4) penes trident-like, with inward curved lateral projections and acutte medial projection.

Etymology

Zagaia is a spear with three points used in Amazonian artisanal fishery, reminiscent of the characteristic trident-like penis of the new species.

Type material

Holotype

BRAZIL: ♁, subimago, Amazonas, Manaus, Reserva Adolfo Ducke, Igarapé do Tinga , 2°55′33.53″ S, 59°54′1.16″ W, 10–13 Jun. 2002, A.M.O. Pes leg. (INPA-EPH 000012).

Paratypes

BRAZIL: 1 ♁, subimago, same data as holotype but 10 –15 Jun. 2004, A.M.O. Pes leg. ( DZRJ 3145 ) ; 1 ♁, subimago, Barcelos , Aracá sierra, Aracá river, before mouth of the igarapé da serrinha, 00°23′57.41″ N, 63°22′43.97″ W, 1 Feb. 2009, F.F. Salles, A.P. Santos and N. Ferreira-Jr leg. (INPA-EPH 000013); 1 ♁, subimago, Aracá sierra, 2009, F.F. Salles, A.P. Santos and N. Ferreira-Jr leg. ( DZRJ 3144 ) ; 2 ♁♁, subimagines, Jauari River , 00°48′0.28″ N, 63°29′22.92″ W, 26 Jul. 2009, F.F. Salles, A.P. Santos and N. Ferreira-Jr leg. ( CZNC Ep-6436).

Description

Holotype

LENGTH (mm). Body: 2.75; fore wing: 2.76; cerci: 1.5; terminal filament: 2.14. General coloration yellowish brown and white, abdomen slightly washed with black.

HEAD. Yellowish, washed with black; ocelli white, surrounded with black; eyes black; antennae translucent white.

THORAX. Pronotum yellowish, heavily washed with black, except submedial unpigmented stripe and oblique brownish line; mesonotum yellowish brown, slightly washed with black and darker on carinae, anteronotal protuberance yellowish; metanotum yellowish; pleura yellowish; sterna yellowish.

FORE WING. Membrane whitish, tinged with gray on basal half of C and Sc regions; longitudinal veins and cross veins whitish, except for vein Sc; vein CuP absent.

LEGS. Fore leg lost in holotype; middle and hind legs translucent yellowish, femur with apical black mark.

ABDOMEN. Segments I–VI translucent white, VII–X yellowish white. Terga I–X almost completely washed with black, terga I–VIII with unpigmented sublateral stripe, tergum X with medial dark furrow. Sterna slightly washed with black.

GENITALIA. Forceps whitish, styliger plate and penes yellowish; segment II of forceps with a basal swelling; styliger plate with acute sublateral projection on hind margin; penes trident-like, with inward curved lateral projection and acute medial projection. Caudal filaments whitish, slightly washed with black at base.

Female

Unknown.

Nymph

Unknown.

Biology

The new species was collected during late fall and winter (Jun. 2002 and 2004; Jul. and Aug. 2009).

Variation

Differences were found only in relation to the length of the subimagines, ranging from 2.7 to 3.1 mm (body), 6.0 to 7.6 mm (cerci) and 4.8 mm (terminal filament).

Remarks

The male imago of Macunahyphes zagaia sp. nov. can be readily distinguished from all other species in the genus by the unique morphology of the penes.

Distribution ( Fig. 1 ) Brazil (Amazonas).

Figures

Fig. 1. Geographical distribution of species of Macunahyphes in South America and Brazil (per state).

Fig. 2. Macunahyphes spp., dorsal view. A. M. zagaia sp. nov. (♁). B. M. eduardoi Almeida & Mariano, 2015 (♀). C. M. australis (Banks, 1913) (♁). D. M. araca sp. nov. (♁). Scale bars: 0.5 mm.