Ocyochterus Drake & Gómez-Menor, 1954

Polhemus, Dan A., 2021, Two new species of Ocyochterus (Heteroptera: Ochteridae) from Ecuador and Panama, Zootaxa 4958 (1), pp. 34-44 : 35

Key to the species of Ocyochterus Drake & Gómez-Menor

1 Hemelytra with a narrow, creamy white fascia running transversely across each hemelytron from the posterior margin of the embolium to the apex of the clavus ( Fig. 1 ); pronotum, clavus and inner corium lacking pruinose markings; lateral pronotal and embolar margins broadly marked with pale yellow along their entire lengths ( Fig. 1 ); Ecuador ( Fig. 21 )... O. victor (Bolívar)

- Hemelytra lacking a transverse pale fascia ( Figs. 2–4 ); pronotum and hemelytra including clavus and inner corium bearing scattered large, linear bluish pruinose markings along inner basal clavus and inner margins of lateral pronotal flanges ( Figs. 2–4 ); lateral pronotal and embolar margins bearing only limited yellow patches anterolaterally ( Figs. 3, 4 ), or such yellow markings lacking ( Fig. 2 ); Panama to Ecuador ( Fig. 21 )............................................................... 2

2 Dorsal ground coloration black with metallic red overtones ( Fig. 4 ); lateral pronotum and base of clavus bearing large, elongate, bluish pruinose markings ( Fig. 4 ); lateral pronotal and embolar margins bearing yellow markings anterolaterally ( Fig. 4 ); body form elongate ovate, slightly tapering posteriorly ( Fig. 4 ); frons when viewed anteriorly lacking dark yellow patches along ventral portions of inner eye margins ( Fig. 8 ); Colombia and Ecuador ( Fig. 21 )....... O. irmae D. Polhemus & J. Polhemus

- Dorsal ground coloration dark brown to black ( Figs. 2, 3 ); pronotum and hemelytra bearing scattered irregular pale blue to lavender pruinose markings ( Figs. 2, 3 ), but lacking linear pale blue markings; lateral pronotal and embolar margins lacking yellow markings anteromedially, bearing at most a few small, scattered dark yellow patches ( Figs. 2, 3 ); body form broadly ovate, rotund, not tapering posteriorly ( Figs. 2, 3 ); frons when viewed anteriorly bearing dark yellow patches along ventral portions of inner eye margins ( Figs. 5, 6 ); Ecuador or Panama ( Fig. 21 ).......................................... 3

3 Pronotum and embolar margin lacking dark yellow patches ( Fig. 2 ); frons dark metallic green ( Fig. 5 ); male right paramere with raised transverse ridge near midpoint of distal arm, apex of distal arm not expanded ( Fig. 12 ); male proctiger elongate trapezoidal ( Fig. 10 ); Ecuador ( Fig. 21 )........................................................ O. graziae n. sp.

- Pronotum and embolar margin bearing scattered dark yellow patches ( Fig. 3 ); frons dark metallic blue ( Fig. 6 ); male right paramere lacking a raised transverse ridge on distal arm, apex of distal arm slightly expanded and spatulate ( Fig. 18 ); male proctiger roughly triangular ( Fig. 16 ); Panama ( Fig. 21 )................................................. O. gilloglyi n. sp.

Figures

FIGURE 21. Distribution of Ocyochterus species in northwestern South America and adjacent southern Mesoamerica.

FIGURES 1–4. Ocyochterus species, photographs of dorsal habitus showing body shape and color patterning. 1. O. victor Bolívar, female, specimen from Ecuador, Pichincha, near Chiriboga. 2. O. graziae n. sp., male paratype specimen from Ecuador, Tungarahua, 14 km. E. of Banos. 3. O. gilloglyi n. sp., male holotype specimen from Panama, Cerro Trinidad. 4. O. irmae D. Polhemus & J. Polhemus, male paratype specimen from Colombia, Valle de Cauca, Farallones de Cali.

FIGURES 5–8. Ocyochterus species, photographs of anterior head showing coloration and cuticular sculpture of eyes, frons and clypeus. 5. O. graziae n. sp., male paratype specimen from Ecuador, Tungarahua, 14 km. E. of Banos. 6. O. gilloglyi n. sp., male holotype specimen from Panama, Cerro Trinidad. 7. O. victor Bolívar, female, specimen from Ecuador, Pichincha, near Chiriboga. 8. O. irmae D. Polhemus & J. Polhemus, male paratype specimen from Colombia, Valle de Cauca, Farallones de Cali.

FIGURES 9–14. Ocyochterus graziae n. sp., male genitalic structures; paratype specimen from Ecuador, Tungarahua, 14 km. E. of Banos. 9. Male genital capsule in right lateral view. 10. Proctiger. 11. Aedeagus. 12. Right paramere. 13. Posteror margin of pygophore. 14. Left paramere.

FIGURES 15–20. Ocyochterus gilloglyi n. sp., male genitalic structures; holotype specimen from Panama, Cerro Trinidad. 15. Male genital capsule in right lateral view. 16. Proctiger. 17. Aedeagus. 18. Right paramere. 19. Posteror margin of pygophore. 20. Left paramere.