NAUCORIDAE, Leach, 1815

Polhemus, Dan A. & Polhemus, John T., 2013, Guide To The Aquatic Heteroptera Of Singapore And Peninsular Malaysia. Xi. Infraorder Nepomorpha- Families Naucoridae And Aphelocheiridae, Raffles Bulletin of Zoology 61 (2), pp. 665-686 : 666

KEY TO THE SUBFAMILIES OF NAUCORIDAE

occurring in Singapore and Peninsular Malaysia

1. Apex of head folded under and backward, such that the rostrum arises at a point posterior to the anterior margin of the head when viewed laterally or ventrally..........................................2

– Apex of of head not folded under and backward, rostrum arising at anterior margin of head when viewed laterally .................... ................................................................................ Naucorinae

2. Rostrum recessed into a cavity on the underside of the head .. ........................................................................... Cheirochelinae

– Rostrum not recessed into a cavity, pointing backward but flush with the underside of the head ............................ Laccocorinae