Campsurus segnis Needham & Murphy, 1924

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 : 338-340

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.6033502

persistent identifier

https://treatment.plazi.org/id/0386A43A-EF52-A211-8B85-FC10FB8BFF4D

treatment provided by

Plazi

scientific name

Campsurus segnis Needham & Murphy
status

 

Campsurus segnis Needham & Murphy

( Figs. 138–139 View FIGURES 138 – 145 , 146–150 View FIGURES 146 – 150 , 176 View FIGURES 176 – 177 )

Campsurus segnis Needham & Murphy, 1924: 19 ; Morgan, 1929: 61; Spieth, 1943: 5; Traver, 1947: 380; Domínguez et al., 2006: 579.

Type material. Holotype ♂ i slide N°622.1 from GUYANA, Bartica , 14.xi.1920, AE Emerson col. (body and wings, CUIC), and paratype ♂ i slide N°622.4 (wings, CUIC) and slide N° 622.6 (genitalia and wings, CUIC), same data as holotype.

Additional material. FRENCH GUIANA: 6 ♂ i and 6 ♀ i from Sinnamary, riv. Saut Aimara, piège lum., 14.vi.1994, V Horeau col. ( FAMU, except 1 ♂ i and 1 ♀ i at IBN, slides IBN372CM and IBN371CM). VENEZUELA: 2 ♂ and 7 ♀ i from Bolivar, Aponwao (sitio 1), N 5° 51' 2" / W 61° 27' 52", 1340m, 20.xi.2005, ME Grillet col. ( MLBV) GoogleMaps ; 2 ♂ and 6 ♀ i from Bolivar, Kavanayen (sitio 3), N 5° 37' 27" / W61° 44' 37", 1355m, 21.xi.2005, ME Grillet col. (IBN) GoogleMaps ; 1 ♂ and 4 ♀ i from Bolivar, Mareman-Paru (sitio 6), N 5° 44' 49" / W61° 24' 06", 1308m, 26.vi.2007, ME Grillet col. (IBN). GoogleMaps

Male imago. Length (mm): body, 8.5–9.8; forewing, 8.0–9.8; hind wing, 3.5–4.5; cercus, 22.0–24.0; forelegs lost.

Female imago: body, 9.0–12.8; fore wing, 11.7–13.0; hind wing, 4.2–5.0; cercus, 3.7–4.0. Sockets on abdominal sternum VIII formed by long, thin furrow, ending in two separated, but contiguous, sockets ( Figs. 149– 150 View FIGURES 146 – 150 ).

Egg. Length, 320–335 µm; width, 250–260 µm. Yellowish, no polar cap, with small circular, amorphous adhesive structure on convex side.

Distribution ( Fig. 181 View FIGURES 181 ). Guyana (orig.), Brazil (Pará, Igarape-Açu, 25.i.1912, HS Parish col., in Needham & Murphy 1924, approx S 1° 7' 37" / W 47° 37' 23"). New records: French Guiana and Venezuela.

Diagnosis. Campsurus segnis is known from adults of both sexes, and it can be distinguished from other species of Campsurus by: 1) male sternum IX with straight to broadly convex hind margin ( Fig. 138 View FIGURES 138 – 145 ); 2) pedestal bases distinctly separated in the middle ( Fig. 138 View FIGURES 138 – 145 ), parastylus very long and slender (p in Fig. 138 View FIGURES 138 – 145 ), inner corner also projected but slightly (ic in Fig. 138 View FIGURES 138 – 145 ); 3) penes base large (bp in Fig. 138 View FIGURES 138 – 145 ), main lobe of penes thin, long and cylindrical, curved ventromedially (ml in Figs. 138–139 View FIGURES 138 – 145 ), secondary lobe of penes long and slender (sl in Figs. 138–139 View FIGURES 138 – 145 ) but shorter than main lobe; 4) small size (length of male fore wings 7–8 mm); 5) female sockets formed by a long, thin furrow ending in two separated but contiguous sockets ( Figs. 149–150 View FIGURES 146 – 150 ); 6) eggs without polar cap, with amorphous structure on convex side.

Discussion. Campsurus segnis is similar to C. ulmeri Traver (1947) and to C. cotaxe sp. nov. because all of them have pedestals that are distinctly separated in the middle, a relatively long parastylus and thin, long and cylindrical penes lobes. Details that separate these species are discused below.

CUIC

Cornell University Insect Collection

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Ephemeroptera

Family

Polymitarcyidae

Genus

Campsurus

Loc

Campsurus segnis Needham & Murphy

Molineri, Carlos & Salles, Frederico F. 2017
2017
Loc

Campsurus segnis Needham & Murphy, 1924 : 19

Dominguez 2006: 579
Traver 1947: 380
Spieth 1943: 5
Morgan 1929: 61
Needham 1924: 19
1924