Campsurus pereirae, Molineri & Salles, 2017

Molineri, Carlos & Salles, Frederico F., 2017, Review of selected species of Campsurus Eaton 1868 (Ephemeroptera: Polymitarcyidae), with description of eleven new species and a key to male imagos of the genus, Zootaxa 4300 (3), pp. 301-354 : 321

publication ID

https://doi.org/10.11646/zootaxa.4300.3.1

publication LSID

lsid:zoobank.org:pub:554D8B46-D396-42FA-9604-6DA9DFA3EFE7

DOI

https://doi.org/10.5281/zenodo.6033482

persistent identifier

https://treatment.plazi.org/id/0386A43A-EF63-A222-8B85-FF53FCB5F80C

treatment provided by

Plazi

scientific name

Campsurus pereirae
status

sp. nov.

Campsurus pereirae sp. nov.

( Figs. 71–74 View FIGURES 68 – 76 , 93 View FIGURES 85 – 93 , 169 View FIGURES 167 – 170 )

Type material. Holotype ♂ i from BRAZIL, Goiás, Parque Nacional das Emas, 26.ii.2012, S 18°15'40" / W 52°53'18", LF Sgarbi, APM Santos, E. Raimundi cols. ( CZNC). Paratypes: 1 ♂ i same data as holotype (IBN). GoogleMaps

Additional material. BRAZIL: 1 ♀ i from Goiás, Mineiros, riacho/ponte, L 22, 514 m, S 17° 12' 36" / W 52° 39' 39", 24.ii.2012, pennsylvania light trap, LF Sgarbi, APM Santos, E. Raimundi cols. ( CZNC). SURINAM: 3 ♂ i ( FAMU, except 1 ♂ i IBN759CM) from Brokopondo district , creek on N edge Brokopondo (approx. N5° 0' / W 54° 59'), 90 m, 27.xii.1978, WL & JG Peters cols. GoogleMaps

Male imago. Length (mm): body, 6.0–6.5; fore wing, 6.0–7.0; hind wing, 2.9; cerci, 17.0–20.0; fore leg, 3.6. General coloration yellowish, widely shaded with gray ( Fig. 169 View FIGURES 167 – 170 ). Head completely shaded with black dorsally, brownish gray on gena, antenna (except for hyaline flagellum) and ventrally. Thorax ( Fig. 169 View FIGURES 167 – 170 ). Pronotum translucent, completely shaded with gray, darker on anterior portion, medial line, and margins; prosternum yellowish white, shaded with gray; propleura anteriorly grayish, posteriorly black. Mesonotum yellowish, shaded with gray on medial line, parapsidal sutures, and between PSP; pleura and sterna yellowish white, shaded with gray; sutures above coxa blackish; furcasternum shaded with gray. Metanotum yellowish white, shaded with gray medially. Legs. Fore leg completely shaded gray, slightly paler at base of tarsomeres; middle and hind legs whitish, shaded completely with gray. Wings. Membrane hyaline, except C and Sc areas shaded with brownish gray, veins hyaline, except C, Sc, and R1 brownish. Hind wing hyaline, except C and Sc areas very slightly shaded with gray. Abdomen ( Fig. 169 View FIGURES 167 – 170 ) whitish translucent, widely and strongly shaded with gray on terga, except on pleural folds. Abdominal sterna translucent white, shaded with gray, slightly darker on medial line and inner margin of gill sclerites. Genitalia ( Figs. 71–74 View FIGURES 68 – 76 ): yellowish white; sternum IX with truncate hind margin ( Fig. 71 View FIGURES 68 – 76 ), medial line and hind margin black; pedestal of each side touching basally, with apically acute parastylus (not visible in Fig. 72 View FIGURES 68 – 76 ), round inner corner strongly projected; forceps short and translucent, shaded with gray; base of main lobe of penes sclerotized, strongly expanded laterally and proximally, with dorsal surface finely granulated (arrow in Fig. 73 View FIGURES 68 – 76 ), apical 1/3 narrowing abruptly, rounded and curved ventrally ( Fig. 74 View FIGURES 68 – 76 ); secondary membranous lobe translucent, slender and cylindrical. Caudal filament translucent whitish.

Female imago. Length (mm): body, 9.2; fore wing, 9.0; hind wing and cerci broken. Similar to male imago, except pigmentation more distinct and few other differences, as follows. Thorax. Pronotum shaded with gray, except pale transverse line between anterior and posterior portions, and pale longitudinal sublateral band; medial line concolorous with rest of notum. Mesonotum additionally shaded gray on anterior triangular mark (after mesonotal protuberance). Middle and hind legs shaded more slightly with gray. Wing membranes yellowish. Abdomen ventrally shaded only submedially and laterally on sterna VII–IX; sternum VIII with small anteromedian subquadrate socket ( Fig. 93 View FIGURES 85 – 93 ). Caudal filaments translucent whitish (all except basal segment lost).

Egg. Length, 250 µm; width, 200 µm. Yellowish with whitish polar cap. Polar cap relatively large (width 0.7× maximum width of egg).

Etymology. We are pleased to name this species after Sueli Pereira, a mayfly specialist who kindly provided material treated in this work.

Distribution ( Fig. 179 View FIGURES 179 ). Brazil (Goiás), Surinam.

Diagnosis. Campsurus pereirae sp. nov. is known from adults of both sexes, and it can be distinguished from other species of Campsurus by: 1) posterior margin of male abdominal sternum IX truncate ( Fig. 71 View FIGURES 68 – 76 ); 2) pedestal of each side touching basally, with apically acute parastylus ( Fig. 72 View FIGURES 68 – 76 ), round inner corner strongly projected; 3) base of main lobe of penes sclerotized, strongly expanded laterally and proximally with its dorsal surface finely granulated ( Fig. 73 View FIGURES 68 – 76 ), apical 1/3 narrowing abruptly, rounded and slightly curved ventrally; secondary membranous lobe cylindrical and slender; 4) small size (length of male fore wings 6.5–7.0 mm); 5) female socket single, subquadrate ( Fig. 93 View FIGURES 85 – 93 ); 6) egg with large polar cap, ratio maximum width of egg/width of PC =1.4.

Discussion. The extremely expanded penes and the fine granules present on them are unique to C. pereirae sp. nov., distinguishing this species from the closely related C. cuyuniensis , C. nessimiani sp. nov., C. dasilvai sp. nov., C. zunigae sp. nov. and C. janae sp. nov. Campsurus janae sp. nov. also presents penes with an extremely wide base, but the penes are smooth, and the pedestals are much larger and shorter than in C. pereirae sp. nov. Again, the finely granulated penes are unique to C. pereirae .

APM

Algonquin Provincial Park

PSP

Parasitic Seed Plants