Hahn, C. W. 1832. Die Wanzenartigen Insecten. Getreu nach der Natur abgebildet und beschrieben. Band I, Heft 3. Nürnberg: Zeh, pp. 81-118. PDF

Notes: Publication date from Sherborn (1914). See also Bergroth (1919).

Halberstadt, K. 1963. Zur Pigmentierung der Formicinenkutikula. Symposia Genetica et Biologica Italica 12:214-220.
Haldeman, S. S. 1844. Descriptions of insects, presumed to be undescribed. Proceedings of the Academy of Natural Sciences of Philadelphia 2:53-55. PDF

Notes: Published between 30 April 1844 and 21 June 1844. See Nolan (1913).

Haldeman, S. S. 1849b. On several new Hymenoptera of the genera Ampulex, Sigalphus, Chelonus and Dorylus. Proceedings of the Academy of Natural Sciences of Philadelphia 4:203-204. PDF
Hale, P.; Lamb, D. (eds.) 1997. Conservation outside nature reserves. Brisbane: Centre for Conservation Biology, University of Queensland, 540 pp.
Hallett, H. M. 1912 ("1911"). A list of Hymenoptera Aculeata recorded for the county of Glamorgan. Transactions of the Cardiff Naturalists' Society 44:92-99.