Sapyga luteomaculata

Rozen, Jerome G. & Kamel, Soliman M., 2009, Hospicidal Behavior of the Cleptoparasitic Wasp Sapyga luteomaculata And Investigation into Ontogenetic Changes in Its Larval Anatomy (Hymenoptera: Vespoidea: Sapygidae), American Museum Novitates 3644, pp. 1-24 : 12

Key to Larval Instars of Sapyga luteomaculata

1. Mandible simple, with single apical point.. 2

– Mandible with one or two teeth dorsal to longest tooth..................... 3

2. Hypostomal groove deep, with cluster of small pores behind ventral mandibular articulation; head capsule more strongly pigmented, thinner relative to length in lateral view; pygopod well developed on abdominal segment 10................................ First instar

– Hypostomal groove shallow (figs. 41, 42), without pores; head capsule less pigmented, concolorous (or nearly so) with rest of body; head thicker relative to length in lateral view (fig. 41); pygopod reduced to two small lateral lobes on segment 10........ Second instar

3. Mandible with single tooth dorsal to ventral tooth (fig. 15); antennal papilla (fig. 43) twice as long as basal diameter; internal opaque yellowish meconial mass well defined at rear of body, close to dorsal body surface; larva not defecating............ Third instar

– Mandible with two distinct teeth dorsal to ventral tooth; antennal papilla (fig. 34) small, little longer than basal diameter; larva defecating or postdefecating..... Fourth instar