Aradus ampliatus UHLER, 1876

Heiss, Ernst & Barr, Cheryl, 2017, Seining watercourses, a new method for collecting flat bugs? (Hemiptera, Heteroptera, Aradidae), Linzer biologische Beiträge 49 (1), pp. 131-145 : 133

Aradus ampliatus UHLER, 1876 ( Photo 3 , Fig. 5; Table I, Figs 1-5)

M a t e r i a l e x a m i n e d: 2♀♀, 28 V 2015 (2 specimens).

Aradus ampliatus seems to be rare and is recorded only from California and Utah. It is a large, dark colored species and easily recognized by the third antennal segment which has a yellowish apical ring. Its size of about 10mm and the pronotal structure resemble that of Aradus crenatus SAY, 1831, from the eastern USA Aradus crenatus ( Photo 5 , Fig. 18) is distinguished by stramineous coloration of body and antennae and also different male genitalic structures which are illustrated for both species (Table II, Figs 11-15; Table I, Figs 1-5).

A d d i t i o n a l m a t e r i a l inCEHI:13 Washington, Boulder Cave , 10 V 1947 (new state record) ; 1♀ Oregon, Klamath Falls , 23 IV 1953 (new state record) ; 1♀ California, Mariposa Co., 6 V 1942 .

Figures

Photo 3: Figs 5-10. (5) Aradus ampliatus, female (10.9mm); (6) Aradus apicalis, male (5.4mm); (7) Aradus apicalis, female (6.6mm); (8) Aradus antennalis, male (3.5mm); (9) Aradus behrensi, male (5.4mm); (10) Aradus behrensi, female (6.1mm).

Photo 5: Figs 17-21. (17) Aradus patibulus, female (7.4mm); (18) Aradus crenatus, male (9.9mm) (Ontario, Prince Edward Co., CEHI); (19) Aradus linsleyi, male (8.6mm); (20) Mezira pacifica, male (6.1mm); (21) Mezira pacifica, female (7.6mm).