Arpactophilus concavus Bohart, 1999

Breitkreuz, Laura C. V., Ohl, Michael & Engel, Michael S., 2016, A review of the New Caledonian Arpactophilus (Hymenoptera: Crabronidae), Zootaxa 4063 (1), pp. 1-66 : 56

Arpactophilus concavus Bohart, 1999

( Figs. 15 , 16 , 41–42 )

Arpactophilus concavus Bohart, 1999: 98 [♀: holotype MNHN].

Diagnosis. Arpactophilus concavus is the only New Caledonian species in the genus with a genal carina (one single longitudinal carina laterally) ( Fig. 15 ). Other distinctive features are the combination of a medially projecting apical margin of the clypeus, with a broad concave medially incision, forming two broad teeth and a longitudinally carinate frons.

Material examined. 1♀: “ NEW CALEDONIA 11882: 22°19’S x 166°55’E, 480m, Foret Nord, site 1. 1–22 Dec 2004. Burwell, Wright. malaise rainforest” [QM].

Figures

FIGURES 10 – 15. Heads of ♀ holotypes (except Arpactophilus concavus Bohart) of species of Arpactophilus Smith in oblique ventrolateral aspect. 10. Arpactophilus kumak sp. nov., arrow indicating almost flat hypostomal midventral line faint anteriorly, carinate posteriorly, slightly angulate medially; 11. A. numee sp. nov., arrow indicating hypostomal midventral line carinate, faint anteriorly, strongly angulate medially; 12. A. nyelayu sp. nov., arrow indicating hypostomal midventral line carinate, faint anteriorly, strongly angulate medially; 13. A. futuna sp. nov., arrow indicates thin, apically-rounded genal spine; 14. A. brochus, arrows highlight fine carinulae; 15. A. concavus, arrows show dorsoventral genal carina terminating in a short tubercle.

FIGURES 16 – 22., Dorsal surfaces of ♀ of species of Arpactophilus Smith. 16. Arpactophilus concavus Bohart; 17. A. irwini Bohart; 18. A. kumak sp. nov. (holotype); 19. A. merle sp. nov. (holotype); 20. A. caac sp. nov. (holotype); 21. A. kraussi Bohart; 22. A. propodealis Bohart.

FIGURES 41 – 46. Facial views and lateral habitus of ♀ of species of Arpactophilus Smith. 41. Arpactophilus concavus Bohart, facial view; 42. A. concavus, lateral habitus; 43. A. cuspidis Bohart, facial view; 44. A. cuspidis, lateral habitus; 45. A. dolichocara Bohart, facial view; 46. A. dolichocara, lateral habitus.