Messatoporus compressicornis Cushman, 1929

Distribution: Neotropical (Mexico).

Hosts: Trypoxylon collinum rubrocinctum Packard 1867 ( Hymenoptera: Crabronidae). Ancistrocerus sutterianus Saussure, 1875 ( Hymenoptera: Eumenidae).

Habitat: Coastal dune scrubland, savannah, dry forest.

Phenology: Appendix I (Fig. 33).

Studied material: MEXICO. Yucatán State, Ría Lagartos Biosphere Reserve, Ría Lagartos Station, Post 024: 27.V–10. VI.2009, 1 Ƥ. Core II: 08–22. VII.2009, 1 Ƥ. Cuyo Station, Cemetery: 03–17. VI.2008, 1 3; 17.VI– 01. VII.2008, 1 Ƥ; 01–14. VII.2008, 1 3; 14–28. VII.2008, 2 33; 28.VII–12. VIII.2008, 1 3; 22.X–10. XI.2008, 1 3 (CER– UADY). Punta Meco: 03–17. VI.2008, 1 3; 17.VI–01. VII.2008, 1 3; 14–28. VII.2008, 1 3; 28.VII– 12. VIII.2008, 1 3; 24.IX–08. X.2008, 1 3. Tekal: 17.VI–01. VII.2008, 1 3; 14–28. VII.2008, 1 Ƥ; 12–28. VIII.2008, 1 3 (CEUA).