Myiomma argentinensis, Henry & Carpintero, 2012

Henry, Thomas J. & Carpintero, Diego L., 2012, Review of the jumping tree bugs (Hemiptera: Heteroptera: Miridae: Isometopinae) of Argentina and nearby areas of Brazil and Paraguay, with descriptions of nine new species, Zootaxa 3545, pp. 41-58 : 48-50

Myiomma argentinensis , n. sp.

( Figs. 16–23)

Myiomma rubrooculatum: Carpintero et al. 2006: 5 (distr.)

Diagnosis. Myiomma argentinensis can be distinguished by the pale posterior margin of the eyes ( Figs. 16, 18); the dark brown antennal segments I and II; the uniformly black pronotum and propleura ( Fig. 18); the translucent hemelytra, with only the base of the clavus brownish; and the dark brown femora, yellow fore and middle tibiae, and partially yellow hind tibiae with the basal halves dark brown ( Fig. 17).

Description. Male (n =5; holotype in parentheses): Total length 2.35–2.52 mm (2.40 mm), maximum width 1.16–1.27 mm (1.20 mm); cuneus inner length 0.35–0.40 mm (0.31 mm), basal width 0.33–0.40 mm (0.31 mm). Head: Length 0.22–0.27 mm, width across eyes 0.52–0.57 mm (0.55 mm), interocular width 0.12–0.14 mm (0.12 mm). Antenna: Segment I length 0.08–0.11 mm (0.08 mm), II 0.65–0.70 mm (0.62 mm), III 0.12 mm (0.15 mm), IV 0.10–0.11 mm (missing). Pronotum: Length 0.36–0.39 mm (0.33 mm), basal width 1.05–1.10 mm (1.01 mm).

COLORATION: Head: Eyes dark reddish brown, narrow posterior margin white, sometimes indistinct, fading to clear; ocelli bordered with red, clear centrally; narrow vertex and frons black, clypeus dark yellowish brown. Labium: dark brown. Antenna: Segments I and II fuscous to black; segments III and IV dark brown. Pronotum: Uniformly shiny black. Mesoscutum: Shiny black. Scutellum: Shiny black, apex pale yellow or dirty white. Hemelytron: Translucent, brownish yellow or dirty white, basal one quarter and narrow costal margin dark brown; membrane clear to dusky; single areole clear. Ventral surface: Propleura uniformly shiny black; meso- and metapleural and ventral areas uniformly shiny black; abdomen shiny dark brown to fuscous. Ostiolar evaporative area: Dark brown; auricle white, tinged with red ventrally. Legs: Coxae and trochanters dark brown; femora mostly dark brown, slightly paler at apices; fore and middle tibiae yellowish brown, dark brown on basal fourths; metatibiae dark brown, with apical thirds yellowish brown.

STRUCTURE, TEXTURE, AND VESTITURE: Head: Eyes nearly contiguous in front, separated by a distance less than diameter of an ocellus, hind lateral margin with a row of six long and two short, erect bristlelike setae; ocelli large, contiguous with inner margin of each eye, nearly contiguous with each other, set above eyes on a swollen mound ( Figs. 18, 20); frons coarsely wrinkled, with a few scattered, relatively long, semierect, brown setae. Antenna: Segment I short, barrel-shaped; II cylindrical, thickened, with dense, semierect dark brown setae subequal to half the diameter of the segment. Pronotum: Weakly convex, shiny, evenly punctate; calli indistinct; lateral margins straight, narrowly carinate, weakly explanate; posterior margin sinuate through middle; with evenly scattered, recumbent brown setae. Mesoscutum: Evenly and finely punctate, with scattered recumbent brown setae. Scutellum: Transversely rugose, with recumbent and semirerect, brown setae. Hemelytron: Weakly convex laterally, with dense, semierect, brown setae.

Male genitalia: Left paramere ( Fig. 22) somewhat C-shaped with a bulbous base and sickle-shaped apex; right paramere ( Fig. 23) relative simple, sword-shaped; vesica membranous, lacking secondary gonopore or any sclerotized structures.

Female: Unknown.

Etyomology. This species is named argentinensis after Argentina where most of the type specimens were collected.

Distribution. This species previously was reported from Formosa and Santiago de Estero, Argentina ( Carpintero et al. 2006) as M. rubrooculatum Henry. Restudy of these specimens shows that they should be referred to our new species M. argentinensis , along with additional material from Misiones Paraguay.

Type material. Holotype: ♂, ARGENTINA: Formosa, 1 ♂, E[stanci]a La Marcela , 35 km E El Colorado, V- 2005 (light trap), (P. Dellapé) ( MACN) . Paratypes: 15 ♂, Argentina, Santiago de Estero, Añatuya , Mar. 1998, Dec. 1998, & Mar. 1999, D. J. Carpintero, at uv light ( MACN; 4 USNM) ; 4 ♂, Argentina, Formosa, I. Juarez / Matacos , May 2005 (Luz), H. Calandra ( MACN) . 8 ♂, Paraguay: Misiones, Aguapey , X-1993, Oct. & Nov. 2000, May 2000, & Mar. 2001, CDC (funnel trap), Carpintero (D. L.) ( MACN; 2 USNM) .