Afrasura discocellularis saotomensis Volynkin & László, 2018

Volynkin, Anton V. & László, Gyula M., 2018, A review of the genus Afrasura Durante, 2009 from São Tomé Island with descriptions of a new species and a new subspecies (Lepidoptera: Erebidae: Arctiinae), Zootaxa 4508 (2), pp. 237-248 : 240

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Afrasura discocellularis saotomensis Volynkin & László

ssp. nov .

Afrasura discocellularis saotomensis Volynkin & László , ssp. nov .

( Figs. 9, 10 View FIGURES 9–16 , 19 View FIGURES 17–20 , 26 View FIGURES 24–30 )

Type material. Holotype GoogleMaps ( Figs. 9 View FIGURES 9–16 , 19 View FIGURES 17–20 ): ♂, “ São Tomé, 482m, Roca   GoogleMaps Bombaim (montane forest-plantation), 0°14’41.7’’N, 6°37’59.8’’E, 27–31.I.2018, MV Light Trap, Aristophanous, M., Miles, W. leg., ANHRT:2018.1” / “ANHRTUK 00019763” / slide AV4546 ♂ A. Volynkin ” (Coll. ANHRT).

Paratypes. SÃO TOMÉ: 8 ♂, with the same data as the holotype, slide No.: AV4545 GoogleMaps ♂ (coll. ANHRT) ; 4 ♂, 1303m, Antenna Bom Successo, 00°16’33.7”N, 6°36’19.7”E, 20.X.2016, MV, primary upland forest with a narrow recent plantation margin, C. R. Turner & T. Tasane leg., ANHRT GoogleMaps : 2017.21 (coll. ANHRT); 1 ♂, 2 ♀, 174m, Guadalupe, 00°23’12.8’’N, 6°37’6.9’’E, 22.X.2016, savanna dry mosaic grassland/forest scrub/plantation, MV, C. R. Turner & T. Tasane, leg., ANHRT GoogleMaps :2017.21, slide No.: AV4400 ♀ (coll. ANHRT) ; 1 ♂, 186m, Ponta Furada, 0°14’01.8”N, 6°28’15.5”E, 24.X.2016, MV Light Trap, Turner, C.R. & Tasane, T. leg., slide No.: AV3324 ♂ (coll. ANHRT) ; 1 ♂, 635m, Ponta Figo, 0°17’12.7”N, 6°34’14.5”E, 27.X.2016, MV Light Trap, Turner, C.R. & Tasane, T. leg. (coll. ANHRT) GoogleMaps ; 1 ♀, 264m, Guadalupe, Antenna, 00°22’49.9”N, 6°38’47.4”E, 31.X.2016, MV, Dry coastal forest and scrub, C. R. Turner & T. Tasane leg. ANHRT 2017.21 GoogleMaps (Coll. ANHRT).

Diagnosis. Afrasura discocellularis saotomensis ssp. nov . ( Figs. 9, 10 View FIGURES 9–16 ) differs from the nominate subspecies occuring widespread in West Africa ( Figs. 11, 12 View FIGURES 9–16 ) by its more yellowish forewing ground colour (while that of A. d. discocellularis is pale orange) and grey forewing pattern what is brown with a reddish suffusion in the mainland taxon. The male genitalia of the two subspecies are very similar, but the distal section of the costa is somewhat narrower and more elongated and the distal costal process is slightly longer in A. d. saotomensis ssp. nov . ( Fig. 19 View FIGURES 17–20 ) compared to those of the nominate subspecies, in addition the distal saccular process of the new subspecies is apically narrowly rounded, while that is sharply pointed in A. d. discocellularis ( Fig. 20 View FIGURES 17–20 ). The female genitalia of A. d. saotomensis ssp. nov . ( Fig. 26 View FIGURES 24–30 ) differs from that of A. d. discocellularis ( Fig. 27 View FIGURES 24–30 ) by its slightly shorter antrum, and somewhat larger signum bursae.

Description. Adult ( Figs. 9, 10 View FIGURES 9–16 ). Forewing length 10–11 mm in males and 10–12 mm in females. Antennae of both sexes ciliate. Head bright yellow, frons with grey spot; thorax brownish yellow with four grey spots on tegulae; abdomen paler than thorax and head, light yellow. Forewing ground color bright yellow with some brownish shade, pattern grey; basal dot present; subbasal line interrupted, consisted of a medial round spot and a longitudinal streak on costa; antemedial line double, its outer part irregularly dentate, inner part dentate and interrupted into three spots; medial line irregularly dentate, forming a loop inwards the cell spot; postmedial line dentate, curved inwards between costa and cell; subterminal line interrupted, consisted of several diffuse spots; discal spot present, dot-like; cilia brownish yellow. Hindwing considerably lighter than forewing, pale yellow, without pattern; cilia pale yellow. Male genitalia ( Fig. 19 View FIGURES 17–20 ). Uncus medium long, slender, curved, apically pointed; tuba analis broad, scaphium thin, weakly sclerotized; tegumen medium broad, rather elongate, moderately sclerotized; juxta broad, with two broad basal lobes; vinculum relatively short, V-shaped, apically rounded; transtillae fused, forming a broad plate with two short apical lobes; valva elongated, broadened medially and strongly tapering distally; costa moderately sclerotized, curved medially, its distal section elongated, narrow, with thorn-like apical process; sacculus narrow, with well developed, finger-like, slightly arcuate, apically rounded distal process. Aedeagus tubular, relatively short and broad, coecum rounded, slightly broadened; vesica short, strongly granulated medially, with two granulated ventral diverticula and robust thorn-like cornutus with broad and curved base. Female genitalia ( Fig. 26 View FIGURES 24–30 ). Ovipositor short and broad; apophyses long and thin, apophyses anteriores slightly longer than apophyses posteriores; ostium bursae very broad; antrum heavily sclerotized, caliciform; ductus bursae very short and broad, membranous; posterior section of corpus bursae relatively narrow, weakly sclerotized, rugose; anterior section of corpus bursae rounded, covered with dense spinulose scobination, signum bursae small, rounded; appendix bursae broad and short, with a broad and long cluster of short spinules and a trigonal, heavily sclerotised process.

Distribution. The new subspecies is known so far only from São Tomé Island.