Stirellus labiatus ( Gillette, 1898 )

Duan, Yani, Zhang, Yating & Dietrich, Christopher H., 2019, Six new species of Stenometopiini (Hemiptera: Cicadellidae: Deltocephalinae) with redescription of additional species and new distributional records, Zootaxa 4603 (2), pp. 201-240 : 212

Stirellus labiatus ( Gillette, 1898) n. rec.

( Figs 9–10 )

Deltocephalus labiatus Gillette, 1898: 26 .

Gillettiella labiata, Metcalf, 1967 , 6 (10b): 1608.

Giletiella [sic] to Stirellus ; Emeljanov, 1962: 393 [comb. not given].

Description. Length. Male: 2.5–2.9mm; female: 3.4–4.0mm.

Coloration. Male usually dark brown overall with forewing apex and pregenital abdominal segment contrastingly white and crown marked with paired brown spots of variable size, female usually yellow green with or without indistinct brown markings on crown similar to those of male ( Fig. 9 A–J). Frontoclypeus variable, darkest males with white band extended across face below eyes ( Fig. 9 K–M). Forewing translucent, male with white veins, female with veins concolorous with membrane ( Fig. 9 A–J). Femora and tibiae with dark brown marks ( Fig. 9I ). Abdominal sternites variably infused with dark brown ( Fig. 9N ).

Morphology. Head subequal in width to pronotum, subconical, crown with anterior margin rounded to face, acutely angled in dorsal and lateral view ( Fig. 9 A–J). Crown longer than width between eyes ( Fig. 9 A–H). Anteclypeus tapering to apex, extending beyond normal curve of genae (Fig. K–M). Pronotum median length shorter than median length of crown. Mesonotum and scutellum together nearly as long as pronotum ( Fig. 9 A–H). Forewing brachypterous and truncate in both sexes, usually exposing most of abdomen ( Fig. 9 A–J).

Male genitalia. Pygofer side with few macrosetae dorsally, dorsal margin slightly convex, posterior margin bluntly and unevenly rounded ( Fig. 10A ). Subgenital plate evenly convex laterally, macrosetae uniseriate on lateral margin ( Fig. 10C ). Style apophysis digitate, laterallylaterally curved, preapicalpreapical lobelobe sharplysharply angulateangulate ( Fig. 10D ). ConnectiveConnectiveConnective H-shaped, stem slightly shorter than arms and unusually broad ( Fig. 10E ). Aedeagal shaft in lateral view bent near base, relatively short, slightly curved, slightly divergent from base, apex blunt; in posterior view slightly tapered, apex with shallow median longitudinal cleft in dorsal view ( Fig. 10 F–H).

Female. Hind margin of seventh sternite with broad median convexity, lateral angles blunt ( Fig. 9N ).

Material examined. 8ƋƋ, 3♀♀, Mexico: Jalisco Rt. 80 kƋ149 NE Lagos de Moreno, 1875m, 21° 22′ N 101° 53′ E, 18 x 2001, coll. C.H. Dietrich, sweeping, 01-017-02 (INHS); 4ƋƋ, 1♀, Mexico: Jalisco Rt 80 kƋ122 NE Lagos de Moreno , 2010m, 21° 32′ N 101° 43′ E, 18 x 2001, coll. C.H. Dietrich, vacuum, 01-018-02 ( INHS) ; 5ƋƋ, 2♀♀, Mexico: Mexico, Rt. 150D kmkm 64, 33 kmkm EE Ixtapaluca, 2920m, 19° 18′ NN 98° 44′ E, 8 xixi 2001, coll. C..H. Dietrich, vacuum, 01-061-02 ( INHS) .

Distribution. Mexico; USA.

Remarks. This species is here recorded from Mexico for the first time.

Figures

FIGURE 9. Stirellus labiatus A–H: habitus, dorsal view; I, J: habitus, lateral view; K–M: face; N: the end of female abdomen, ventral view. A–D, K: male; E–J, L–N: female.

FIGURE 10. Stirellus labiatus A: male pygofer lobe, lateral view; B: male pygofer and segments X and XI, dorsal view; C: valve, subgenital plates and styles, ventral view; D: style, dorsal view; E: connective, dorsal view; F: aedeagus, dorsal view; G: aedeagus, lateral view; H: connective and aedeagus, lateral view.