Euarestoides bimaculatus 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 : 313-314

publication ID

https://doi.org/ 10.11646/zootaxa.4551.3.3

publication LSID

lsid:zoobank.org:pub:0328F818-3527-4D59-87DC-B8E02258FBE3

DOI

https://doi.org/10.5281/zenodo.5936070

persistent identifier

https://treatment.plazi.org/id/03AA4A7D-C04D-FFF1-7F96-926BFF606372

treatment provided by

Plazi

scientific name

Euarestoides bimaculatus Savaris & Norrbom
status

sp. nov.

Euarestoides bimaculatus Savaris & Norrbom , n. sp.

Figs. 7 View FIGURES 2‒13 , 22–25 View FIGURES 14‒25 , 40 View FIGURES 38‒43 , 46 View FIGURES 44‒49 , 52 View FIGURES 50‒55 , 58 View FIGURE 58

Diagnosis. This species differs from all other species of Euarestoides in having the ground color of the scutum yellow, two distinct dark spots within the stellate mark in cell r 4+5; and the glans with two large spines at the base. It differs from the other species except E. rionegrensis in lacking a complete darker border on the anterodistal margin of the reticulate area between the pterostigma and crossvein r-m. It further differs from E. rionegrensis in having the medial prensiseta curved ( Fig. 40 View FIGURES 38‒43 ), the acrophallus without a large apical lobe ( Fig. 52 View FIGURES 50‒55 ), and the aculeus with the lateral margin nonserrate ( Fig. 24 View FIGURES 14‒25 ).

Description. Body length 2.70–2.85 mm, yellow in ground color. Setae generally pale brown to brown.

Head: Slightly higher (0.70–0.75 mm) than long (0.48–0.53 mm). Generally yellow, frons yellow to orange, ocellar tubercle brown to dark brown, and occiput brown medially and with brown mark sublaterally extended nearly to vertical seta. Frons length (0.32–0.40 mm) less than width at vertex (0.46–0.48 mm), slightly narrowed to anterior margin (0.36–0.46 mm). Gena with few small setulae mixed acuminate dark and lanceolate yellowish on middle and ventral margin; genal seta acuminate, pale brown; gena height to eye long diameter ratio 0.23–0.24. Eye ovoid, long diameter 0.54–0.58 mm, width 0.48–0.49 mm. Antenna testaceous yellow, first flagellomere as long as wide. Maxillary palpus pale brown at apex with 3 distinct acuminate setulae.

Thorax: Length 1.21–1.26 mm, ground color of scutum and scutellum yellow.

Wing ( Fig. 7 View FIGURES 2‒13 ): Length 2.98–3.10 mm, width 1.10–1.18 mm. Area between pterostigma and crossvein r-m pale brown to gray reticulate with relatively small hyaline spots, without or with very faint, incomplete, darkened border along anterodistal margin. Pterostigma with basal half subhyaline or yellowish and apical half brown. 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, usually reaching vein R 2+3; and small triangular subapical mark reaching vein R 2+3. Cell r 2+3 with 2 marginal hyaline marks (with complete or incomplete medial dark ray). Cell r 4+5 with apical rays complete, narrowly apically (slightly wider distally than basally); with 2 distinct medial dark spots bordering vein R 4+5 within the subapical stellate mark; subbasal hyaline spot near anterior end of crossvein dm-m small, no more than half width of cell. Cells br, bm, cu a, dm, and m 4 and anal lobe pale brown to gray reticulate, hyaline spots relatively small, markings 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 dm-m not connected). Halter mostly yellow, with apex darker.

Legs: Entirely yellow.

Abdomen: Ground color yellow.

Female terminalia: Oviscape yellow, length 0.71 mm, width 0.56 mm at base and 0.20 mm at apex; with evenly distributed white setulae. Eversible membrane ( Fig. 22 View FIGURES 14‒25 ) length 0.71 mm. Aculeus ( Fig. 23 View FIGURES 14‒25 ) pale brown, length 0.72 mm, with lateral margin nonserrate; tip ( Fig. 24 View FIGURES 14‒25 ) triangular, length 0.16 mm. Spermathecae ( Fig. 25 View FIGURES 14‒25 ) elongate, length 0.14 mm.

Male terminalia: Medial surstylus with prensisetae equal and medial prensiseta distinctly curved ( Fig. 40 View FIGURES 38‒43 ). Phallapodeme 0.58 mm long, mostly dark brown. Glans 0.32 mm long, with 2 large spines at base ( Fig. 52 View FIGURES 50‒55 ); acrophallus without apical lobe; vesica very short.

Distribution. Neotropical. Peru (Cusco) ( Fig. 58 View FIGURE 58 ). The type series was collected at altitudes of 2849-3296 m.

Biology. This species has not been reared, but two of the type specimens were collected on Baccharis boliviensis (Wedd.) Cabrera ( Astereae ). Adults have been collected in January and June.

Type data. The holotype male is labeled “ PERU: Cusco: Ollantaytambo, E of, WP 665, 13.26707°S ” / “ 72.22823°W, 2849 m, on Baccharis boliviensis (12-PE-36), 8 Jun 2012; A. L. Norrbom & B. D. Sutton ” / “ HOLOTYPE ♂ Euarestoides bimaculatus Savaris & Norrbom ” [red] / “ USNMENT00744412 ” [plastic bar code label]. It is double mounted (minuten), is in excellent condition, and is deposited in the MHNJP GoogleMaps . Paratypes: PERU: Cusco: Carretera Manu , dirt side road, ravine, WPB-34, 13.57279°S 71.70208°W, 3296 m, 28 Jan 2013; A. L. Norrbom, G. J. Steck & B. D. Sutton, 1♂ ( USNM USNMENT00875891 ) GoogleMaps ; Ollantaytambo , E of, WP 665, 13.26707°S 72.22823°W, 2849 m, on Baccharis boliviensis (12-PE-36), 8 Jun 2012; A. L. Norrbom & B. D. Sutton, 1♀ ( USNM USNMENT00744411 ) GoogleMaps .

Etymology. The species epithet is a Latin adjective referring to the two spots within the stellate mark in cell r 4+5.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Tephritidae

Genus

Euarestoides

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