Euarestoides pereirai Savaris & Norrbom, 2019

Savaris, Marcoandre, Norrbom, Allen L., Marinoni, Luciane & Lampert, Silvana, 2019, Revision of the genus Euarestoides Benjamin (Diptera: Tephritidae), Zootaxa 4551 (3), pp. 299-329 : 315-317

publication ID

publication LSID


persistent identifier

treatment provided by


scientific name

Euarestoides pereirai Savaris & Norrbom

n. sp.

Euarestoides pereirai Savaris & Norrbom   , n. sp.

Figs. 1 View FIGURE 1 , 10–11 View FIGURES 2‒13 , 30–33 View FIGURES 26‒37 , 42 View FIGURES 38‒43 , 48 View FIGURES 44‒49 , 54 View FIGURES 50‒55 , 58 View FIGURE 58

Euarestoides sp.: Prado et al. 2002: 1018 [distribution, host plants]; Savaris et al. 2015: 18 [distribution, host plant].

Diagnosis. This species differs from all other species of Euarestoides in having the reticulation on the basal half of the wing reduced to isolated gray or pale brown spots ( Figs. 10–11 View FIGURES 2‒13 ). It further differs from E. bimaculatus   and E. rionegrensis   in having a completely darkened border on the anterodistal margin of the reticulate area between the pterostigma and crossvein r-m. It differs from E. abstersus   , E. acutangulus   and E. dreisbachi   in having a distinct dark spot in cell r 4+5 within the subapical stellate mark ( Figs. 10–11 View FIGURES 2‒13 ) and the acrophallus of the glans without an apical lobe ( Fig. 54 View FIGURES 50‒55 ). It further differs from E. acutangulus   and E. dreisbachi   in having the apical ray in cell r 1 broad, similar to the subapical ray, and it differs from E. abstersus   in having the darker border on the anterodistal margin of the reticulate area between the pterostigma and crossvein r-m reaching the costa subapically in the pterostigma (the pterostigma with a small hyaline spot between the dark border and the apex of vein R 1), the aculeus lateral margin not serrate, and the medial prensiseta strongly curved ( Fig. 42 View FIGURES 38‒43 ).

Description. Body length 2.36–2.71 mm, mostly yellow to brown in ground color. Setae generally pale brown ( Fig. 1 View FIGURE 1 ).

Head: Slightly higher (0.60–0.74 mm) than long (0.48–0.56 mm). Generally yellow, frons yellow to orange, ocellar tubercle dark brown, and occiput brown medially and with brown mark sublaterally extended nearly to vertical seta. Frons length (0.31–0.34 mm) less than width at vertex (0.36–0.39 mm), slightly narrowed to anterior margin (0.31–0.36 mm). Gena with few small setulae acuminate, pale brown on middle and ventral margin; genal seta acuminate, pale brown; gena height to eye long diameter ratio 0.17–0.23. Eye ovoid, long diameter 0.49–0.63 mm, width 0.46–0.51 mm. Antenna testaceous yellow, first flagellomere more long than wide. Maxillary palpus pale brown at apex with 2-3 distinct acuminate setulae.

Thorax: Length 0.94–1.09 mm, ground color of scutum dark brown, of scutellum brown dorsally and yellow lateral and ventral.

Wing ( Figs. 10–11 View FIGURES 2‒13 ): Length 2.40–3.23 mm, width 0.82–1.18 mm. Area between pterostigma and crossvein r-m mostly hyaline with few brown or gray spots, with complete darker border along anterodistal margin crossing of pterostigma ending anteriorly on costal vein; rest of pterostigma hyaline. Cell r 1 with 3 rays in marginal part, most proximal ray narrow, distal two rays broad, most distal as broad as or subequal to subapical ray; rays bordering 3 marginal hyaline marks: largest immediately distad of pterostigma, oblique and reaching to or almost to vein R 4+5; second mark triangular, extended almost to vein R 2+3; and small triangular or quadrate subapical mark not reaching vein R 2+3. Cell r 2+3 with 2 marginal hyaline spots (with complete medial dark ray). Cell r 4+5 with hyaline spot bordering crossvein r-m oblong reaching veins R 4+5 and M 1; apical rays complete, narrowly apically (slightly wider distally than basally); distinct medial dark spot reaching vein R 4+5 near base of apical rays within the subapical stellate mark; subbasal hyaline spot near anterior end of crossvein dm-m small, no more than half width of cell. Cell dm with subapical ray arising from basal area of crossvein r-m. Cells bm, cu a and m 4 and anal lobe with few pale brown to gray spots usually not connected. Dark ray over crossvein dm-m and 2 dark rays crossing cell m 1 all reaching posterior wing margin. Basal marginal hyaline mark in cell m 1 reaching vein M 1 (first ray and ray on dmm not connected).Halter whitish to yellow.

Legs: Entirely yellow.

Abdomen: Ground color dark brown.

Female terminalia: Oviscape yellow, length 0.83–0.94 mm, width 0.60–0.68 mm at base and 0.20–0.22 mm at apex; with evenly distributed white setulae. Eversible membrane ( Fig. 30 View FIGURES 26‒37 ) length 0.98–1.00 mm. Aculeus ( Fig. 31 View FIGURES 26‒37 ) pale brown, length 1.00– 1.02 mm, tip triangular, length 0.14–0.16 mm, with lateral margin nonserrate ( Fig. 32 View FIGURES 26‒37 ). Spermathecae ( Fig. 33 View FIGURES 26‒37 ) subspherical length 0.11–0.12 mm.

Male terminalia: Lateral surstylus with apex distinct sclerotized ( Figs. 42 View FIGURES 38‒43 , 48 View FIGURES 44‒49 ). Medial surstylus with prensisetae subequal and medial prensiseta distinctly curved; lateral prensiseta ca. ¾ as long as medial prensiseta ( Fig. 42 View FIGURES 38‒43 ). Phallapodeme 0.37–0.39 mm long, mostly dark brown. Glans 0.26–0.28 mm long, without apical lobe ( Fig. 54 View FIGURES 50‒55 ); vesica very short.

Distribution. Neotropical. Brazil (Bahia, Minas Gerais, Paraná, Rio de Janeiro, Rio Grande do Sul, Santa Catarina, São Paulo) ( Fig. 58 View FIGURE 58 ). Elevational records range from 610 to 822 m.

Biology. This species has been reared from flowerheads of Moquiniastrum densicephalum (Cabrera) G. Sancho   and Moquiniastrum hatschbachii (Cabrera) G. Sancho. Savaris et al. (2015)   reported that it breeds in Moquiniastrum polymorphum (Less.) G. Sancho   ( Gochnatieae   ) and Prado et al. (2002) in Moquiniastrum barrosoae (Cabrera) G. Sancho   , Moquiniastrum floribundum (Cabrera) G. Sancho   and Richterago discoidea (Less.) Kuntze.   Adults have been collected in February, March, September and October.

Type data. The holotype male is labeled “ BRASIL: S[ão] P[aulo], Votorantim , SP 0 79, km 103, 28.ii.2014, 23°36'31.51"S, 47°28'02.52"O, 738 m, Rede entomol., M. Savaris ” / “ HOLOTYPE ♂ Euarestoides pereirai   Savaris & Norrbom” [red] / “ USNMENT00118524 ” [plastic bar code label]. The holotype is double mounted (minuten), is in excellent condition, and is deposited in the DZUP GoogleMaps   . Paratypes: same data as holotype, 6♂ 3♀ ( USNM USNMENT00262496–97 , USNMENT00118517 , DZUP USNMENT00118519–23 , USNMENT 00119507 ) GoogleMaps   . BRASIL. Bahia: Palmeiras , 12°30'25.20"S 41°34'46.49"W, 822 m, 1 Oct 2012, Luminosa, A. M. Silva-Neto, 1♂ ( DZUP USNMENT00262504 ) GoogleMaps   . Minas Gerais: Diamantina, São João da Chapada, Serra da Guiné , 18°6.6'S 43°44.08'W, 7 Sep 1996, Lewinsohn, Prado, Santos, Silva, PIC96683 View Materials , 1♂ ( USNM) GoogleMaps   7♂ 13♀ ( ZUEC) GoogleMaps   . Joaquim Felício, Serra do Cabral , cerrado, 17°43.56'S 44°11.17'W, 3 Sep 1996, Lewinsohn, Prado, Santos, Silva, PIC96624 View Materials , 1♀ ( USNM) GoogleMaps   13♂ 22♀ ( ZUEC) GoogleMaps   ; Serra do Cabral, Fazenda da Onça , 17°42.02'S 44°13.77'W, 17 Jul 1995, T. Lewinsohn, P. Prado, B. Buys, V. Motta, PIC95290 View Materials , 4♂ 1♀ ( ZUEC) GoogleMaps   . Santana do Riacho, Serra do Cipó , 19°13.91"S 43°30.37"W, 26 Jul 1995, PIC95447 View Materials , T. Lewinsohn, P. Prado, B. Buys, V. Motta, 6♂ 2♀ ( ZUEC) GoogleMaps   ; Santana do Riacho, Parque Nacional da Serra do Cipó , trilha alta, WP-181, 19.36005°S 43.60734°W, 831 m, emerged 28 Sep 2016, reared ex flowerheads of Moquiniastrum densicephalum (Cabrera) G. Sancho   (BOT-069), coll. 11 Sep 2016, M. Savaris, S. Lampert, A. L. Norrbom, L. Wendt, 1♀ ( ESALQ ESALQ6936-1 ) GoogleMaps   ; Santana do Riacho , MG-10, at stream crossing with old bridge, WP 185, 19.29114°S 43.56866°W, 1226 m, emerged 25 Sep 2016, reared ex flowerheads of Moquiniastrum hatschbachii (Cabrera) G. Sancho   (BOT-084), coll. 12 Sep 2016, M. Savaris, S. Lampert, A. L. Norrbom, L. Wendt, 1♂ 2♀ ( ESALQ ESALQ6936-2 4 ) GoogleMaps   . Paraná: Colombo: Jardim Belo Rincão , WP-201, 25°22'20.51"S 49°8'29.79"W, 947 m, 15 Oct 2016, sweeping, M. Savaris, S. Lampert, 1♂ 1♀ ( MSPC USNMENT 01232003 –04) GoogleMaps   . Rio de Janeiro: Marich, acesso a Barra , 4 Mar 1986, ex capitula Moquiniastrum polymorphum (Less.) G. Sancho   (17002), TLT 170, T. M. Lewinsohn, R. F. Monteiro, 2♂ ( USNM)   . Rio Grande do Sul: Passo Fundo , 28°14'29.88"S 52°27'28.70"W, 610 m, 8 Mar 2009, reared from flowerheads of Moquiniastrum polymorphum (Less.) G. Sancho, M. Savaris   , 1♂ ( MUZAR USNMENT00119506 ) GoogleMaps   ; Passo Fundo , 28°14'30.23"S 52°27'35.64"W, 13 Feb 2009, M. Savaris, 2♀ ( DZUP USNMENT00118535–36 ) GoogleMaps   1♀ ( USNM USNMENT00118532 ) GoogleMaps   . Santa Catarina: Nova Teutônia 27°11'S 52°23'W, 300-500 m, 13 Oct 1961, Fritz Plaumann, 1♀ ( CNC) GoogleMaps   .

Etymology. This species is named to honor Paulo Roberto Valle da Silva Pereira, a Brazilian research entomologist and early mentor of the senior author.


Smithsonian Institution, National Museum of Natural History


Museu de Zoologia da Universidade Estadual de Campinas


Museo di Storia Naturale "Pietro Calderini"


Canadian National Collection of Insects, Arachnids, and Nematodes