Dilasia colludens ( White, 1879 )

Carpintero, Diego Leonardo, 2014, Western Hemisphere Lasiochilinae (Hemiptera: Heteroptera: Anthocoridae) with comments on some extralimital species and some considerations on suprageneric relationships, Zootaxa 3871 (1), pp. 1-87 : 21-22

Dilasia colludens ( White, 1879)

( Fig. 45 )

Cardiastethus colludens White, 1879: 148 .

Lasiochilus (Dilasia) colludens: Reuter, 1884: 20 .

Dilasia colludens: Carpintero, 2002: 27 .

Diagnostic characters: Measurements, see Table IV. Male: Small species. General coloration black; hemelytra dark brown with their extreme bases paler; legs and labium testaceous. Antennal segment II thickened towards the apex and shorter than head. Antennal segments (I:II:III:IV) 1: 2.3: -: - (3–4 broken). Dorsally smooth, basal lobes of the pronotum and scutellum, rugose ( Fig 57 ). Dorsal pilosity dark and short. Metasternum apically short (as in A. mirifica ) ( Fig. 58 ). Spiniform setae on midtibiae long and thick. Setae on dorsal surface restricted to outer margins. Genitalia with left paramere “hammer-type” with apex widened more than in other species ( Fig. 56 ). Aedeagus with two feather-like lateral and subapical structures I call “ processus penniformis ” (see comments on this structure in “A brief discussion on some characters used in the present revision ”). Female: Parietovaginal gland small. Seventh sternite not punctured centrally ( Fig. 59 ). Antennal segments (I:II:III:IV) 1: 2.3: -: -.

Distribution: Brazil, Argentina. ( Fig. 48 )

Material examined: ARGENTINA: ♀ Formosa, Ea. La Marcela , 35 Km E El Colorado, X-2007 (artificial light) Dellapé, slide-mounted, MACN (new distributional record in Argentina) ; ♀ Salta, Pocitos, XI-1954, slidemounted, MACN ; ♂ Santa Fe, Reconquista, XI-1939, slide-mounted (only genitalia) MACN .

Discussion: This species differs from D. basalis by its smaller size and shorter interocular space (larger eyes), from the other species in having two subapical feather-like structures on the aedeagus, and by the widened apex of left paramere.

Figures

FIGURES 43–47. Species of genus Dilasia. 1. 43, D. ashlocki Female, allotype (2.24 mm); 44, D. carvalhoi Female, holotype (2.24 mm); 45, D. colludens Male (2.27 mm); 46, D. crassicornis Male holotype; 47, D. gracilicornis Male paratype.

FIGURES 56–59. Dilasia colludens. Male. 56, Detail of left paramere (LP). Female. 57, Head and pronotum; 58, Metasternum; 59, Genitalia showing the parietovaginal gland (PG).

FIGURES 48–49. Distribution of Dilasia (I, II).