Dorsal view of T II for A Ancistrocerus epicus (Zavattari) female, with punctures small and reduced apically, and ivory maculations B A. similis (Smith) male, with punctation dense apically; and C A. sur sp. n. female, with punctation less dense apically and ending about one puncture diameter from apex. Lateral view of metasoma for D A. flavomarginatus (Brèthes) female, with metasomal maculations abundant and orange-yellow; and E A. pilosus (de Saussure) female, with pale maculations and sparse after T II. Dorsal view of T I-III for F A. durangoensis Cameron female, with punctation coarse on T II and apices slightly thickened or reflexed, and pubescence consisting of long hairs G A. cingulatus (Cresson) female, with T I and II dull, with fine punctation, and T I carina sharp and thin; and (H) A. isla Carpenter female, with T I and II shiny with punctures superficial, and T I carina thick and blunt. tc = T I carina.

 
 
  Part of: Piekarski PK, Carpenter JM, Sharanowski BJ (2017) New species of Ancistrocerus (Vespidae, Eumeninae) from the Neotropics with a checklist and key to all species south of the Rio Grande. ZooKeys 718: 139-154. https://doi.org/10.3897/zookeys.718.21096