Campsurus litaninensis Spieth,

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: 341-342

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Campsurus litaninensis Spieth


Campsurus litaninensis Spieth 

( Figs. 151–162View FIGURES 151 – 162, 177View FIGURES 176 – 177)

Campsurus litaninensis Spieth, 1943: 5  (male, female); Domínguez et al., 2006: 573.

Type material (not studied). SURINAM: upper Litani river, 4.viii.1939, Geijskes col. 

Other material. BRAZIL: 28 ♂ i and 2 ♀ i from Rio de Janeiro, Lagoa de Juturnaiba [S 22° 37' 46" / W 42° 18' 8"], Silva Jardim , 25.i.1978, SM Pereira col. ( CZNC, except 4 m and 1 ♀ i in IBN)GoogleMaps  ; 2 ♂ i (used in redescription below, color pattern well-preserved) from Roraima, Caracaraí, rio Branco, Bem Querer , N 01°55' / W 61°00', 18– 21.xi.2002, AMO Pes col. ( CZNC)GoogleMaps  ; 5 ♂ i from Roraima, Boa Vista, Rio Cauamé , N2° 49' 11" / W 60° 40' 24", 28.ii.2003, UV light trap ( CZNC)GoogleMaps  ; 7 ♂ i and 6 ♀ si from Roraima, Boa Vista, Rio Cauamé, N 2° 49' 11" / W 60° 40' 24", 29.v.2009, Pennsylvania light trap, Fusari & Fernandes cols. ( CZNC)GoogleMaps  . FRENCH GUIANA: 8 ♀ i from Sinnamary, Riv. Saut Dalles, 10.v.1994, V Horeau ( FAMU, except 1 f on slide IBN613CM)  ; 4 ♂ i same data except date: 10.iv.1993 ( FAMU, except slide IBN370CM) [ Sinnamary is at N 05°22' / W52 ° 36'].GoogleMaps 

Male imago. Length (mm): body, 10.0–13.0; foreleg, 4.0–5.5; fore wing, 8.6–12.5; hind wing, 4.1–5.7; cerci, 24.0–32.0. General coloration yellowish ( Fig. 177View FIGURES 176 – 177). Head yellowish, shaded with black among ocelli, occiput not shaded ( Fig. 177View FIGURES 176 – 177). Antenna whitish, shaded with gray. Thorax ( Fig. 177View FIGURES 176 – 177). Pronotum yellowish translucent, shaded with gray medially, with shading breaking laterally (not on meson) between anterior and posterior portions, blackish medial band (not reaching hump anteriorly), hump hyaline. Mesonotum orangeish, shaded with gray along medial line (forming triangular shaded area near mesoscutal protuberance) and parapsidal sutures, area between PSP also shaded gray; inner and outer margins of parapsidal sutures suffused with gray. Metanotum yellowish, shaded very slightly with gray medially. Pleura and sterna paler than nota. Legs yellowish, fore leg shaded completely with gray except coxa, shaded less marked at apex of tarsites 4 & 5 and apex of claw. Wings. Membrane yellowish translucent; veins translucent yellowish, very slightly shaded with gray, darker on C and Sc; hind wing veins yellowish, not shaded gray. Abdomen ( Fig. 177View FIGURES 176 – 177) yellowish, shaded with gray dorsally on terga III – X, except medial pale band (progressively thinner posteriorly), tergum II very slightly shaded submedially, terga III –VII with submedian][-shaped marks (progressively larger toward posterior segments) and with posterior transversal portion (of [-mark) extending laterally; terga III –VII also with transverse, gray dash posterolaterally; terga VIII –IX more extensively shaded; tergum X very slightly shaded laterally. Sterna whitish yellow, except gill sclerites and sternum IX yellowish. Genitalia ( Figs. 151–156, 158–162View FIGURES 151 – 162) yellowish, hind margin of sternum IX strongly projected posteriorly (arrow in Fig. 159View FIGURES 151 – 162); pedestal bases distinctly separated, with narrow bar connecting them medially ( Fig. 151View FIGURES 151 – 162), parastylus rotated (parastylus in dorsal position, inner corner projected and located ventrally); pedestal (pd in Fig. 159View FIGURES 151 – 162) with well-developed and apically rounded parastylus (p in Fig. 161View FIGURES 151 – 162), inner corner also roundly projected (ic in Figs. 152, 161View FIGURES 151 – 162); penes base large (bp in Fig. 159View FIGURES 151 – 162); main lobe of penes fingerlike, strongly sclerotized dorsally, strongly curved ventrally ( Figs. 154–156View FIGURES 151 – 162), secondary lobe of penes very short, blunt and subtriangular ( Figs. 155, 159, 162View FIGURES 151 – 162). Caudal filaments whitish translucent.

Female imago. Length (mm): body, 11.5–13.0; fore wing, 12.5–15.0; hind wing, 5.5–7.0; cerci, 5.5–6.0. Similar to male. Abdominal sternum VIII with single, subquadrate, anteromedian socket, opening toward anterior margin ( Fig. 157View FIGURES 151 – 162).

Egg. Length 260–285µm, width 220–260µm, polar cap length 10µm, and width 70–75µm. General coloration yellowish white with whitish, small polar cap. Polar cap 0.3× maximum width of egg.

Distribution ( Fig. 178View FIGURES 178). Surinam (orig.). New records: Brazil (Rio de Janeiro, Roraima), French Guiana.

Diagnosis. Campsurus litaninensis  , known from adults of both sexes, can be distinguished from other species of Campsurus  by: 1) sternum IX extremely projected medially ( Fig. 159View FIGURES 151 – 162); 2) pedestals bases distinctly separated in the middle but connected by a narrow band ( Figs. 151View FIGURES 151 – 162), parastylus rotated (the parastylus is in a dorsal position, with the inner corner projected and located ventrally); 3) penes base well-developed but almost completely hidden by the projected sternum, main lobe of penes finger-like, curved ventrally, secondary lobe very small and fused with penes base ( Figs. 155, 159, 162View FIGURES 151 – 162); 4) medium size (length of male fore wings ca. 9–13 mm); 5) female sternum VIIII with single anteromedian socket, subquadrate, opening toward anterior margin ( Fig. 157View FIGURES 151 – 162); 6) egg with small, type III polar cap 0.3× maximum width of egg.

Discussion. Campsurus litaninensis  shares some characters with the violaceus  -group of species ( Molineri et al. 2015a): the finger-like penes and the reduction of secondary lobes (sometimes present, but reduced in selected species of the violaceus  -group), and the completely fused, subquadrate sockets on female abdominal sternum VIII. The pedestals nevertheless present a short parastylus, as in most species treated in this paper (those related to C. essequibo  , C. segnis  and C. lucidus  ).


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Campsurus litaninensis Spieth

Molineri, Carlos & Salles, Frederico F. 2017

Campsurus litaninensis Spieth, 1943 : 5

Dominguez 2006: 573
Spieth 1943: 5