May 2018
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1 Body color golden brown; wing remnant distinctly elongate ………….…. myrmicoides
1’ Body color shiny black; wing remnant only slightly longer than broad ………..…….. 2

2(1) Scutellum rounded, well elevated over metanotum  …………………….….….  sp. 1
2’ Scutellum flat, almost level with metanotum……..…….……………..…..……… sp.  2


Sp. 1: Inyo, Lassen, Marin, San Bernardino, San Luis Obispo (CSCA, RLZC, UCR); possibly Los Angeles (UCR?)?
Sp. 2: Lassen (RLZC); Santa Barbara (SBBG); possibly Los Angeles (UCR)?


Nearctic species and distributions

dennoi Gordh & Trjapitzin, 1980: USA (NJ)
elegans (Gordh & Trjaptzin, 1978) (in Trjapitzin & Gordh, 1978): USA (GA)
myrmicoides Compere & Zinna, 1955: Introduced to USA (CA)
niger (Ashmead, 1888): USA (FL)
scapus (Gordh & Trjapitzin, 1980): MEX (Hidalgo)
wheeleri (Ashmead, 1904): USA (TX)



Noyes (2016), citing De Santis (1979),  reported H. myrmicoides from Mexico, but the latter work only lists this species from Trinidad & Tobago. Trjapitzin (1998) presented a key to the world species of the genus. Specimens of H. dennoi, H. elegans and H. scapus from the USNM did not key out in the above key. The holotype of H. niger is represented only by legs still attached to a point.



Ashmead, W.H. 1888. Descriptions of new Florida chalcids belonging to the sub-family Encyrtinae. Entomologica Americana 4: 15-17.
Ashmead, W.H. 1904. Classification of the chalcid flies or the superfamily Chalcidoidea, with descriptions of new species in the Carnegie Museum, collected in South America by Herbert H. Smith. Memoirs of the Carnegie Museum 1: 225-551.
Compere, H. & Zinna, G. 1955. Tre nuovi generi e cinque nuove especie di Encyrtidae. Bollettino del Laboratoria di Entomologia Agraria ‘Filippo Silvestri’, Portici 14: 94-116.
De Santis, L. 1979. Catálogo de los himenópteros calcidoeos de América al Sur de los Estados Unidos. Publicación Especial Comisión de Investigaciones Científicas Provincia de Buenos Aires, La Plata, 488 pp.
Gordh, G. & Trjapitzin, V.A. 1980. Encyrtids of the tribe Acroaspidiini (Hymenoptera, Encyrtidae). Entomologicheskoe Obozrenie 59(4):872-885.
Noyes, J.S. 2016. Universal Chalcidoidea Database. World Wide Web electronic publication. http://.nhm.ac.uk/chalcidoids.
Trjapitzin, V.A. 1998. A new species of the genus Holcencyrtus from Mexico (Hymenopera: Encytidae). Zoosystematica Rossica 7: 185-188.
Trjapitzin, V.A. & Gordh, G. 1978. A review of the Nearctic Encyrtidae (Hymenoptera, Chalcidoidea). Communication I. Entomologicheskoe Obozrenie 57: 364-385.