Aspistomella teresensis Araújo, V. Korneyev & Savaris, 2024

Kovac, Damir, Kameneva, Elena P., Korneyev, Severyn V., Araújo, Alexandre Santos, Savaris, Marcoandre, Smit, John T., Schneider, Alexander, Schreiber, Robert & Korneyev, Valery A., 2024, Revision of the Aspistomella group of genera (Diptera: Ulidiidae: Pterocallinae: Lipsanini), Zootaxa 5530 (1), pp. 1-117 : 72-74

Aspistomella teresensis Araújo, V. Korneyev & Savaris , sp. nov.

urn:lsid:zoobank.org:act:694DF8E9-372A-4A05-9CEE-9B574EBFCCA8

Figs 6 G , 42–43

Material examined.Type. Holotype ♀: Brazil:“ES[Espírito Santo], Brasil , IV.1969, N.Papavero col.”“ HOLOTYPE ♀ Aspistomella teresensis Araújo, V. Korneyev & Savaris ” (red label) (genitalia dissected) ( MZUSP).

Diagnosis. Aspistomella teresensis shares with A. angustifrons , A.crucifera , and A. quinquincis a acomparatively short headand narrow wings, wing pattern widely dark in apical half, wing venation and chaetotaxy and differs from A. angustifrons by the coxae, femora and tarsi yellow (in A. angustifrons widely black) and wing cell m 4 with hyaline area at posterior margin (in A. angustifrons entirely black). It differs from A. crucifera and A. quinquincisa by having cell r 1 with 1 marginal hyaline mark reaching anterior half of cell dm, instead of two incisions, as well as other characters indicated in the key. It also differs from A. schnusei by having a short epistome and a largely dark apical half of the wing (in A. schnusei , the epistome is strongly developed anteriorly and the wing is largely hyaline with narrow bands apically).

Description. Female. Head ( Figs 42 C–F ) ratio (length: height: width) = 1.19: 1.22: 1.71; frons, face above transverse fold, parafacial, and gena reddish to yellowish brown, epistome and occiput mostly dark brown with metallic blue tingue. Frons moderately wide ( Fig. 42 F ), 0.7× as long (from lunule to anterior ocellus) or 1.37× (from lunule to inner vertical seta) as wide at lunule, with subshining, black ocellar triangle and brown vertical plates; orbits, vertex, gena and occiput silver-white microtrichose; parafacial narrow, reddish-yellow, sparsely white microtrichose. Frontal plate with 5 short lateroclinate parafrontal setulae, frontal vitta sparsely whitish microtrichose, with 5 short frontal and 3 interfrontal setae ( Fig. 42 F ). Eye 1.15× higher than long, conspicuously incised posteroventrally. Face white microtrichose above epistome; epistome laterally brown, sparsely white microtrichose, with metallic bluish sheen. Clypeus yellow, sparsely white microtrichose, subshining. Gena brownish yellow, with long genal seta and 4additional long peristomal setae anterior of it, as long as genal seta. Occiput brownish, with cyan metallic sheen, greyish microtrichose.

Antenna yellow; scape with black setulae; pospedicel and arista missing in the holotype. Mouthparts brown to black, prementum black, sparsely microtrichose. Palp yellow, as described for A. angustifrons .

Thorax ( Fig. 42 C ) brown to black, with bluish sheen and sparse white microtrichia not hiding underlying cuticle. Mesonotal scutum 1.75× longer than wide; black setulose, with 8 rows of setulae between rows of dorsocentral setulae; acrostichal prescutellar seta present, 0.6× longer than posterior dorsocentral seta; prescutellar area with 4 setulae between posterior dorsocentral setae. Scutellum dorsally very slightly convex, entirely brown, subshining, sparsely microtrichose, devoid of setulae, with bronze sheen. Subscutellum bluish shining, sparsely microtrichose. Mediotergite bluish shining, non-microtrichose. Other setae as described for the genus. All the setae and setulae black.

Wing ( Figs 6 G , 42 G ) 5.9 mm (♀) long, 3.25× longer than wide; basicostal cell hyaline; costal cell straight, 5.2× longer than wide, brown in basal and apical 1/5 of length, with costa straight and forming very inconspicuous cleft before apex of vein Sc; pterostigma entirely brown, narrow triangular, 1.75× longer than wide, vein R 1 bare, ending slightly proximal to crossvein r-m level; vein R 2+3 slightly arcuate in basal half, straight at apex. Crossvein r-m proximal to mid-length of cell dm. Cell r 4+5 5.8× longer than wide. Cell m 1 narrow triangular; ultimate section of M 1 3.9× longer than crossvein dm-m and 1.4× longer than penultimate section. Vein CuA Z-shaped, forming moderately short posteroapical lobe of cell cua along vein CuP, 1.14× longer than its anterior shoulder. Wing pattern with short subbasal crossband from humeral vein through cell cua into alula; wing with brown mark from apical part of costal cell to wing apex, with 1 triangular marginal hyaline mark from cell r 1 through base of cell r4+5 extending into middle of cell dm distally of crossvein r-m. One cuneiform hyaline incision from medial portion of cell m1 through cell r 4+5 extending into cell r 2+3. Cell cua with longer posterior projection, at least as longer as width of cell. Cell m4 subhyaline with a hyaline ovoid portion apically crossing vein M4, reaching cell dm-m. Cell cup (anal cell sensu Kameneva & Korneyev 2010) and anal lobe half as wide as cell cua. Calypters white, with white cilia. Halter yellow.

Legs ( Figs 42 A, B ) with yellowish coxae; femora brown except apices and bases yellow; tibiae brown; tarsi brownish yellow; black setose and setulose. Fore femur uniformly setulose, with 3 longer ventral setae. Mid tibia with two strong and ventroapical seta 1.19× longer than tibia width.

Abdomen brown to black, sparse, with faint purplish or greenish metallic sheen.

Male: not known.

Female terminalia ( Fig. 43 ). Oviscape: 0.81 mm long, narrower than abdomen, 1.43× long as wide, tapered, truncated at apex. Eversible membrane 1.11 mm long. Aculeus 0.96 mm long, 1.18× longer than oviscape, not widened basally, strongly widened in a pre-apical region, weakly sclerotised. Two subspherical spermathecae 1.1× longer than wide.

Etymology. The name of the species is an adjective that refers to the type locality (Santa Teresa, Espírito Santo, Brazil).

Figures

FIGURE 6. Aspistomella, wing. A, A. sachavaca sp. nov.; B, A. schnusei sp. nov.; C, A. angustifrons (Hendel); D, A. garleppi sp. nov.; E, A. crucifera (Hendel); F, A. quinquincisa sp. nov.; G, A. teresensis sp. nov.; H, A. obliqua sp. nov. Abbreviations: C—costal vein; c—costal cell; M1—first branch of media; m1—first medial cell; ptstg—pterostigma; r1—first radial cell; rm—radial-medial crossvein. Scale bar: 1 mm.

FIGURE 42. Aspistomella teresensis sp. nov., holotype ♀ (MZUSP). A, habitus, right; B, same, left (abdomen detached); C, head mesonotum, dorsal; D, head left and fore leg; E, head right and anterior; F, same, anterior; G, wing, anterobasal part; H, labels. Scale bars: 1 mm. (All photographs by Alexandre Araújo.)

FIGURE 43. Aspistomella teresensis sp. nov., holotype ♀ (MZUSP). A, oviscape; B, eversible membrane; C, aculeus; D, aculeus apex and cercal unit; E, spermatheca (one of the two). Scale bars: 0.2 mm. (All photographs by Alexandre Araújo)