AMBRYSINAE USINGER, 1941, 1862

Sites, Robert W., 2022, Phylogeny and revised classification of the saucer bugs (Hemiptera: Nepomorpha: Naucoridae), Zoological Journal of the Linnean Society 195, pp. 1245-1286 : 1258-1259

SUBFAMILY AMBRYSINAE USINGER, 1941

FIGS 3C , 10A , 11A

Type species: Ambrysus signoreti Stål, 1862 .

Taxonomic history: This subfamily was established by Usinger in 1941, but was downgraded to tribe level and placed in Naucorinae ( Popov, 1970) , then transferred to Cryphocricinae ( Štys & Jansson, 1988) and ultimately elevated and restored to subfamily rank ( Reynoso-Velasco & Sites, 2021 ). Significant recent changes in the generic composition of the subfamily include the transfer of Pelocoris in from Naucorinae , and the erection of the genera Australambrysus Reynoso & Sites, 2021 and Maculambrysus ( Reynoso-Velasco & Sites, 2021 ). The subfamily currently includes Ambrysus Stål, 1862 , Australambrysus, Carvalhoiella D e C a r l o, 1 9 6 3, C a t a r a c t o c o r i s U s i n g e r, 1 9 4 1, H y g r o p e t r o c o r i s S i t e s, 2 0 1 5, M a c u l a m b r y s u s Reynoso & Sites, 2021 , Melloiella De Carlo , 1 9 3 5, Pe l o c o r i s, P i c r o p s L a R i v e r s, 1 9 5 2 a n d Procryphocricos J. Polhemus, 1991 . Species of all of these genera, except Pelocoris , were included along with Cryphocricos in the subfamily Cryphocricinae prior to the revision by Reynoso-Velasco & Sites (2021) .

Revised taxonomy: The subfamily was recently revised by Reynoso-Velasco & Sites (2021) . No further taxonomic action is proposed here.

Diagnosis: Diagnostic features were provided by Reynoso-Velasco & Sites (2021) as follows: (1) labium inserted near the anterior margin of the head; (2) labrum well developed; (3) maxillary plates only slightly produced anteriorly; (4) anterior margin of the pronotum generally with a concavity of different depths, but straight in Pelocoris ; (5) pronotum with lateral margins smooth or finely crenate; (6) prosternellum concealed by the mesally directed propleural projections, but prosternellum exposed in Pelocoris and Procryphocricos ; (7) forewing macropterous, but brachyptery also present in Procryphocricos ; (8) no sternal abdominal sense organs (hydrostats), except in Procryphocricos ; (9) compressible air-bubble respiration, but a plastron could be used by brachypterous Procryphocricos ; (10) pubescent abdomen (scattered long setae in Procryphocricos ); and (11) males with vesica not modified into a long tubular structure.

C o m m e n t s: A l l s p e c i e s i n t h i s s u b f a m i l y a r e distributed exclusively in the New World.

Figures

Figure 3. Mouthpart positions: recessed rostrum of Cheirochela thailandana (a); lateral views of Laccocoris spurcus (b) and Australambrysus crenulatus (c). White arrows indicate positions of labrum with respect to the functional anterior margin of the head.

Figure 10. Habitus examples of each subfamily: Ambrysinae: Ambrysus signoreti (a), Cheirochelinae: Cheirochela thailandana (b), Cryphocricinae: Cryphocricos hungerfordi (c), Ilyocorinae: Ilyocoris cimicoides (d), Laccocorinae: Laccocoris limicola (e), Limnocorinae: Limnocoris inornatus (f), Macrocorinae subfam. nov.: Macrocoris flavicollis (g), Naucorinae: Naucoris scutellaris (Thailand) (h).

Figure 11. Examples of male genital capsule with pygophore, aedeagus and parameres (terga IX and X removed) for each subfamily: Ambrysinae: Ambrysus lunatus (a), Cheirochelinae: Coptocatus kinabalu (b), Cryphocricinae: Cryphocricos hungerfordi (c), Ilyocorinae:Ilyocoris cimicoides (d), Laccocorinae: Laccocoris spurcus (e), Limnocorinae: Limnocoris ovatulus (f), Macrocorinae subfam. nov.: Macrocoris flavicollis (g), Naucorinae: Afronaucoris gen. nov.: Afronaucoris madagascariensis (h).