Potamocoris

Herrera, Federico & Springer, Monika, 2014, New species of Potamocoris Hungerford (Heteroptera, Potamocoridae) from Costa Rica and a key to the species, Zootaxa 3884 (5), pp. 492-496 : 495-496

Key to the species of the genus Potamocoris

This key is based on the information provided by Hungerford (1941, 1942), La Rivers (1950, 1969), Polhemus & Polhemus (1982), Van Doesburg (1984), Longo et al. (2005), Heckman (2011) and Polhemus & Carrie (2013). In addition, material deposited at the CAS was examined by the first author. See Appendix 1.

1. Head, pronotum and scutellum dark brown; thick fringes of setae on the margins of the head and pronotum............. 2

1’. Head, pronotum and scutellum not dark brown; head and pronotum lacking of thick fringes of setae on the margins........ 3

2. Male body length less than 3.00 mm; female body length less than 3.20 mm. Belize...... P. isbiru Polhemus & Carrie, 2013

2’. Male and female body length of 3.30 mm or greater. Brazil: Rio Janeiro, São Paulo and Paraná.................................................................................................... P. hungerfordi ( De Carlo), 1968

3. Hemelytra with symmetrically arranged black stripes and spots. Brazil: São Paulo.......... P. plaumanni ( De Carlo), 1968

3’. Hemelytra without black stripes and spots.................................................................. 4

4. Interocular space of female at least 2 times the width of eye.................................................... 5

4’. Interocular space less than 2 times the width of eye.......................................................... 8

5. Female interocular width less than 2.3 times the width of eye.................................................. 6

5’. Female interocular width greater than 2.5 times the width of eye................................................ 7

6. Interocular region and pronotum with peculiar spots almost pink. Female interocular width about 2.2 times the width of eye. Brazil: São Paulo................................................................ P. usingeri ( De Carlo), 1968

6. Interocular region and pronotum without peculiar spots. Female interocular width 2.0 times the width of eye. Costa Rica............................................................................................. P. sitesi sp. nov.

7. Interocular width from 3.7 to 4.2 times the width of an eye; parameres with the same width throughout; basal plate with rounded apex. Brazil: Rio de Janeiro................................. C. nelsoni ( Longo, Ribeiro & Nessimian), 2005

7’. Interocular width from 2.7 to 2.8 times the width of an eye; parameres with a slight constriction at apex; basal plate with sub- acute apex. Brazil: Mato Grosso, Rio Grande do Sul.............................. P. kleerekoperi ( Hungerford), 1942

8. Anterior interocular space greater than 1.5 times the width of an eye............................................. 9

8'. Anterior interocular space about 1.3 or less the width of an eye............................................... 10

9. Subgenital plate of female notched at apex. Honduras, Guatemala and Mexico................ P. beckeri La Rivers, 1950

9’. Subgenital plate of female sinuate posteriorly, with a small sharply incised notch apically. Peru.. P. robustus La Rivers, 1969

10. Shape of membrane resembling a water drop. Corium extending distally almost to tip of wing, embracing part of membrane. Suriname..................................................................... P. nieseri Van Doesburg, 1984

10’. Shape of membrane squarish. Corium not extending distally almost to tip of wing and thus not embracing part of membrane.............................................................................. .. P. parvus Hungerford, 1941