Dilasia fuscula Reuter, 1871

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 : 29-30

Dilasia fuscula Reuter, 1871

( Fig. 88 )

Dilasia fuscula Reuter, 1871: 563 .

Lasiochilus fusculus: Reuter, 1884: 22 .

Lasiochilus comitialis Drake & Harris, 1926: 34 . (synonymized by Carpintero, 2002: 27).

Diagnostic characters: Measurements, see Table IV. Male: Characterized by the combination of characters as follows: general coloration reddish brown, antennal segment II slightly longer than length of head, thickened at apex; antennal segments (I:II:III:IV) 1: 2.4: 1.9: 2.0; head prolonged anteriorly from the base of antennae, short and thick forefemorae, ostiolar peritreme opening slightly thickened apically; copulatory spines short and thick ( Fig. 102 ); pygophore ( Fig. 103 ) with punctures on dorsal surface ( Fig. 105 ); aedeagus with processus penniformis ( Fig. 104 ); left paramere hammer-type, nearly straight, with characteristic three erect hairs on subapical area of dorsal margin ( Fig. 106 ), as well as their own measurements. Female: Similar to male in coloration and measurements. Antennal segments (I:II:III:IV) 1: 2.4: 1.9: 1.9.

Distribution: Canada, United States, Mexico, Grenada? ( Fig. 49 ).

Material examined: Syntypes. UNITED STATES: 2 ♀ Texas, Belfrage , Lasiochilus fusculus Reut., Spec. Typ. No. 10363 and 10364. ZMHF ; ♀ Fontainebleau St. Pk., ST. Tammany, Par. LA. VI-1965, J. F. Lawrence, Lot. 1461. ex Polyporus sector, Jon L. Herring det. USNM ; ♀ Maryland, Cecil co. Pleasant Hill , 14/ 16-VII-1989, W. E. Steiner & J. M. Swearingen. Under bark of fallen rotting Fagus . USNM ; ♀ Maryland, Montg. Co. Clarksburg at Little Bennett Cr. 9-VII-1989, W. A. Steiner, under bark of dead standing Juglans nigra . USNM ; ♀ Stone Mt. Ga., 18-XI-1945, P. W. Fattig, det. R. I. Sailer. USNM ; ♂ ♀ Hendon, Va. , VIII-1911, H. G. Barber, coll. N. 1950. USNM ; ♀ Asbury Pk. , 7-IX-1936, N. J. C. A. Frost, under bark, P. rigida stump. USNM ; 3 ♀ Vienna, Va. , 28-VIII- 1913, H. G. Barber coll. N.1950. USNM ; ♂ same locality, 30-X-1936, Bridwell colln. (slide-mounted). MACN ; ♀ Northboro, Mass. , IV-1935, C. A. Frost. USNM ; ♀ Athens , Ohio, 3-XI-1949, Straits Farm, P. J. Spangler. P. J. Spangler coll. 1958, 221697. USNM ; ♀ Washternau, Co., Mich. Forestry Farm 3-IX-1920, R. F. Hussey. H. H. Harris coll1977. USNM ; ♀ F. Lde. Dist. N. J. 28-10-1905. H. G. Barber colln. 1950. USNM ; ♀ Ames , Iowa, 16- VII-1926, Lasiochilus fusculus H. H. Harris det. H. H. Harris coll1977. USNM ; ♂ Sherborn, Mass. , 28-IX-1957, C. A. Frost coll, H. G. Barber colln, 1950. USNM ; Holotype, ♂ Lasiochilus comitialis D. & H., H. H. Fiske collector, Hicoria N 1987, Hoph. US. USNM .

Discussion: This species was well defined in Kelton’s (1978) excellent paper on Canadian Anthocoridae . This species is closely related to D. reuteri and unicolor because of their left paramere of hammer-type, but differs from them by being almost straight, i. e. not so curved, and by their coloration (reddish-brown) and measurements.

Figures

FIGURES 86–94. Species of genus Dilasia. 2. 86, D. foveicollis Male; 87, Idem. Male, holotype (1.75 mm); 88, D. fuscula Female, syntype (2.83 mm); 89, D. galateae; 90, D. microps; 91, Idem. Female holotype (2.53 mm); 92, D. neotropicalis Female holotype (2.65 mm); 93, D. punctipennis (2.56 mm); 94, Idem. Male holotype.

FIGURES 102–106. D. fuscula. Male. 102, Copulatory spines (Csp); 103, Pygophore; 104, Detail of processus penniformis (Prp) on aedeagus; 105, Detail of punctures on dorsal surface on pygophore (PP); 106, Detail of left paramere.

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