Eumyrmococcus species

Hodgson, Chris, 2012, Comparison of the morphology of the adult males of the rhizoecine, phenacoccine and pseudococcine mealybugs (Hemiptera: Sternorrhyncha: Coccoidea), with the recognition of the family Rhizoecidae Williams 3291, Zootaxa 3291 (1), pp. 1-79 : 52

Key to known adult males of Eumyrmococcus species :

1. Body length approximately 1 mm; antennae and legs all very short; body setae all minute............................ 2

- Body length minute, approximately 100 µm; antennae and legs well developed; body setae sparse but most relatively long; smallest setae capitate.................................................................... E. taylori ( Fig. 18 )

2. Penial sheath mainly withdrawn within posterior abdominal segments; aedeagus and apex of penial sheath both broad; legs very short, not reaching body margin.................................................. E. sarawakensis ( Fig. 16 )

- Penial sheath not apparently deeply embedded in posterior abdominal segments but attached postero-ventrally to abdominal segment VIII; aedeagus and penial sheath both narrowing to a blunt apex; legs quite long, easily reaching margins when extended.............................................................................. E. smithii ( Fig. 17 )

Figures

FIGURE 16. Eumyrmococcus sarawakensis Williams. Adult male. Where J = 2 dorsal views of posterior end of abdomen, L = 2 ventral views of posterior end of abdomen, and V = minute setae. For other labels, see under Materials and methods: conventions. (Modified after Williams, 1998)

FIGURE 17. Eumyrmococcus smithii Silvestri. Adult male. Where L = ventral view of penial sheath, and N = side view of posterior end of abdomen. For other labels, see under Materials and methods: conventions. (Modified after Kishimoto-Yamada et al., 2005)

FIGURE 18. Eumyrmococcus taylori Williams. Adult male. Where J = dorsal view of posterior end of abdomen; L = ventral view of penial sheath, and V = minute capitate setae. For other labels, see under Materials and methods: conventions. (Modified after Williams, 1998).