This was such an exciting find! When I first saw it from above (last picture), I thought it was some kind of bee. As it turns out, this species of Assassin bug imitates Meliponine bees. It has a huge expansion of the pronotum, which is probably hollow as in the treehoppers. It is also bee-like in having the abdomen and legs banded. It has two white horns protruding from the head above the insertion of the antennae. One cm in length. Family Reduviidae, Subfamily Harpactorinae.
Forested area, Km 11.5 on the highway between Tuxtla Gutierrez and San Cristobal de Las Casas, Chiapas, Mexico.
"Remarkable examples of mimicry occur between certain groups of Hymenoptera and several taxa of Harpactorini. Species of Notocyrtus are recognized as mimics of meliponine bees, which they resemble mostly because of the angular and inflated pronotum. Two mimetic species pairs have so far been identified: Trigona fulviventris and Ptilotrigona lurida, as models of Notocyrtus dorsalis and N. colombianus, respectively". From Chapter 12: Assassin Bugs (Reduviidae excluding Triatominae by Gil-Santana, Forero & Weirauch in the book: True Bugs (Heteroptera) of the Neotropics (A. Panizzi & J. Grazia Editors). See also: https://www.projectnoah.org/spottings/40... where Felix Fleck also found this species in Veracruz, Mexico). https://www.naturalista.mx/observations/... (Notocyrtus dorsalis from Jalisco, Mexico). https://www.projectnoah.org/spottings/13..., with a different species of Notocyrtus from Brazil. https://www.gbif.org/species/119620515 (Notocyrtus dorsalis). https://www.inaturalist.org/observations... (Notocyrtus dorsalis from Beliz). https://www.flickr.com/photos/entomopixe... (Notocyrtus sp. from Colombia). https://www.flickr.com/photos/rainforest... (Notocyrtus dorsalis from Peru). https://www.inaturalist.org/taxa/252723-... http://picssr.com/tags/notocyrtus/intere... (from Ecuador). http://www.projectnoah.org/spottings/157... (Notocyrtus from Panama). http://www.projectnoah.org/spottings/736... (Notocyrtus sp. from Brazil).
Lat: 16.73, Long: -92.93
Spotted on Jul 29, 2018
Submitted on Aug 1, 2018
and 10 other people favorited this spotting