Tytthus pallidus
| Notice: | This page is derived from the original publication listed below, whose author(s) should always be credited. Further contributors may edit and improve the content of this page and, consequently, need to be credited as well (see page history). Any assessment of factual correctness requires a careful review of the original article as well as of subsequent contributions.
If you are uncertain whether your planned contribution is correct or not, we suggest that you use the associated discussion page instead of editing the page directly. This page should be cited as follows (rationale):
Citation formats to copy and paste
BibTeX: @article{Henry2012ZooKeys220, RIS/ Endnote: TY - JOUR Wikipedia/ Citizendium: <ref name="Henry2012ZooKeys220">{{Citation See also the citation download page at the journal. |
Ordo: Hemiptera
Familia: Miridae
Genus: Tytthus
Name
Tytthus pallidus Henry sp. n. – Wikispecies link – ZooBank link – Pensoft Profile
Diagnosis
This species is recognized by the combination of the dark brown head, pronotum, and scutellum; the pale antennal segment I, with only the base fuscous, the brown antennal segment II; and the uniformly pale yellow legs. All known specimens are macropterous.
Tytthus pallidus keys out with Tytthus piceus based on the pale antennal segment I and the pale hemelytra with smoky-brown shading. It can be distinguished from Tytthus piceus by the broader head, the longer antennal segment I that is longer than the interocular width, and the less prominent calli lacking a glaucous sheen.
Description
Holotype male (Fig. 28): Length to apex of hemelytron 2.88 mm, length to base of cuneus 2.21 mm, width across hemelytra 0.88 mm. Head: Length 0.35 mm, width across eyes 0.61 mm, interocular width 0.29 mm. Labium: Length 1.31 mm. Antenna: Segment I length 0.35 mm, II 1.22 mm, III and IV missing. Pronotum: Length 0.35 mm, basal width 0.75 mm.
Coloration: Head: Uniformly dark brown; pale interocular spot found in all other species apparently absent; fuscous to dark reddish brown. Labium: Pale brownish yellow. Antenna: Segment I uniformly pale yellow, with a dark brown or fuscous ring at base; segments II–IV dark brown. Pronotum: Uniformly dark brown. Mesoscutum: Uniformly dark brown. Scutellum: Uniformly dark brown. Hemelyton: Uniformly pale translucent brown. Ostiolar evaporative area: Dark brown to fuscous. Ventral surface: Thorax dark brown to dark reddish brown; abdomen dark reddish brown on segment II, III, and genital capsule, slightly paler in between. Legs: Coxa pale yellow, reddish brown at bases; femora, tibiae, tarsi, and claws uniformly pale yellow.
Structure, texture, and vestiture: Antenna: Segment I set with a few, scattered, recumbent setae and two erect, subapical, bristlelike setae. Labium: Extending beyond metacoxae to abdominal segment II or III. Pronotum: Shiny, impunctate; anterior angles rounded; lateral margins weakly concave, flaring at posterior angles; posterior margin distinctly sinuate; calli weakly swollen; set with relatively long, semierect setae. Mesoscutum: Impunctate, broadly exposed; with a few scattered semierect setae. Scutellum: Weakly shining, impunctate; equilateral; set with scattered, semierect setae. Hemelytra: Macropterous, cuneus and membrane fully developed, extending well beyond apex of abdomen.
Male genitalia: Left paramere (Fig. 160): Mitt-shaped; right arm long, broad, apically blunt; left arm short, apically acute. Right paramere (Fig. 161): Round. Endosoma: Teneral and damaged; not drawn. Phallotheca (Fig. 162): slender, apically acute.
Female (n = 4) (Fig. 29): Length to apex of hemelytron 2.69–3.33 mm, length to base of cuneus 2.05–2.40 mm, width across hemelytra 0.82–1.02 mm. Head: Length 0.32–0.38 mm, width across eyes 0.56–0.64 mm, interocular width 0.29–0.30 mm. Labium: Length 1.12–1.44 mm. Antenna: Segment I length 0.26–0.34 mm, II 0.85–1.23 mm, III 0.61–0.78 mm, IV 0.51–0.56 mm. Pronotum: Length 0.29–0.37 mm, basal width 0.69–0.85 mm.
Etymology
The specific epithet “pallidus” refers to the characteristic pale yellow first antennal segment.
Host
Unknown.
Distribution
Known from Brazil and Panama.
Type material
Holotype ♂ (00162199) (USNM): PANAMA: Darien: [Pinogana District], El Real, 19 Mar. 1953, F. S. Blanton, 1 ♂ (USNM). El Real, 08 Aug 1952, F. S. Blanton, 2 ♀♀ (00161392, 00161393) (USNM). Paratypes: BRAZIL: Amazonas: Reserva Ducke, 25 km NNE of Manaus, 120 m, 26 Jul 1973, R.T. Schuh, 2 ♀♀ (00165829) (AMNH).
Original Description
- Henry, T; 2012: Revision of the Plant Bug Genus Tytthus (Hemiptera, Heteroptera, Miridae, Phylinae) ZooKeys, 220: 1-114. doi
Images
|
