Ambrysus brunneus Sites, 2015

Reynoso-Velasco, Daniel, 2017, New combinations, status, and species of Neotropical Ambrysini (Heteroptera: Naucoridae: Cryphocricinae), Zootaxa 4323 (4), pp. 503-518 : 509

Ambrysus brunneus Sites

Figs. 14–17

Ambrysus brunneus Sites 2015 : Zootaxa 4033: 433–435 (original description).

Description. Macropterous male. Body length 7.56, width 4.16. Similar to female with the following exceptions: tergum VI with accessory genitalic process extending nearly straight posteriorly, slightly dilated, rounded apically, not reaching posterior margin of VII ( Fig. 14 ). Pseudoparameres of tergum VIII extending directly posteriorly, broadly rounded apically, with elongate setae ( Fig. 15 ). Pygophore with anterior margin obtusely angulate, parameres rounded, with long, dense brush of setae on dorsal surface ( Figs. 16, 17 ). Aedeagus elongate, left side straight, right side angled and slightly curved in distal 1/4 ( Fig. 17 ).

Discussion. This male specimen was collected in a small, sandy stream with the aquatic beetles Anodocheilus silvestrii (Régimbart) , Copelatus sp., Derovatellus lentus (Wehncke) , Desmopachria sp., Hydaticus subfasciatus Laporte , Laccophilus sp., Rhantus calidus (Fabricius) , Thermonectus variegatus (Laporte) (Dytiscidae) , Epimetopus sp. ( Epimetopidae ), Chasmogenus sp., Helochares sp., Hydrobiomorpha sp. Tropisternus chalybeus Laporte (Hydrophilidae) , and Notomicrus cf. traili Sharp (Noteridae) . The female is known from a single specimen collected in Guyana, Region 9 ( Sites 2015).

Material examined. GUYANA: Region 6, 4°09.143'N, 58°11.207'W, 105 m, Upper Berbice, c. 1 km W Basecamp 1, small sandy stream, leg. A. Short, 21.ix.2014, GY14-0921-03A (1♂ UMC).

Figures

FIGURES 14 – 17. Ambrysus brunneus. (14) Abdominal terga VI and VII of male showing accessory genitalic process of VI, (15) abdominal tergum VIII of male with pseudoparameres, (16) male genital capsule, (17) male genital capsule with terga IX and X (proctiger) removed.