Sand bees use pheromones in order to identify a mate; in the case of A. nigroaenea, the females emit a mixture of tricosane (C23H48), pentacosane (C25H52) and heptacosane (C27H56) in the ratio 3:3:1, and males are attracted by specifically this odor.
sˈænd bˈiːz jˈuːs fˈɛɹəmˌoʊnz ɪn ˈɔːɹdɚ tʊ aɪdˈɛntᵻfˌaɪ ɐ mˈeɪt; ɪnðə kˈeɪs əvə. nˈɪɡɹoʊˌɛniə, ðə fˈiːmeɪlz ɪmˈɪt ɐ mˈɪkstʃɚɹ ʌv tɹˈaɪkəsˌeɪn sˈiː twˈɛnti θɹˈiː ˈeɪtʃ fˈoːɹɾi ˈeɪt, pˈɛntɐkˌɑːseɪn sˈiː twˈɛnti fˈaɪv ˈeɪtʃ fˈɪfti tˈuː ænd hˈɛptɐkˌɑːseɪn sˈiː twˈɛnti sˈɛvən ˈeɪtʃ fˈɪfti sˈɪks ɪnðə ɹˈeɪʃɪˌoʊ θɹˈiː:θɹˈiː:wˈʌn, ænd mˈeɪlz ɑːɹ ɐtɹˈæktᵻd baɪ spəsˈɪfɪkli ðɪs ˈoʊdɚ.