Thread subject: Diptera.info :: Small wasp (from horse-chestnut leaf mines)

Posted by Dmitry Gavryushin on 14-07-2010 00:59
#1

A glass jar full of jammed horse-chestnut leaves was brought to me on July 11, 2010 by a security man from my work who returned from Bryansk region (close to the Ukrainian border). He said that his car was all covered with small moths or something.
A few small wasps have subsequently emerged in this jar. Size around 2 mm.

Posted by Dmitry Gavryushin on 14-07-2010 01:00
#2

That's what I believe to be a male of the same (considerably smaller, escaped).

Posted by Dmitry Gavryushin on 14-07-2010 01:10
#3

The host, horse-chestnut leafminer, Cameraria ohridella (Gracillariidae, Lithocolletinae, newly-emerged imago with underdeveloped wings), an important pest of horse-chestnut, discovered in Macedonia, quickly became widely-distributed in Europe, reported from Southern Russia in early 2000s.
A list of known Chalcidoidea parasitoids (retrieved from eol.org):
Encyrtidae: Isodromus vinulus (Dalman, 1820); Eulophidae: Elachertinae: Cirrospilus elegantissimus Westwood, 1832, C. pictus (Nees, 1834), C. singa Walker, 1838, C. talitzkii Boucek, 1961, C. variegatus (Masi, 1907), C. viticola (Rondani, 1877), C. vittatus Walker, 1838; Elachertus inunctus Nees; Aprostocetus sp.; Elasminae: Melittobia acasta (Walker), 1922); Entedoninae: Chrysocharis nephereus (Walker, 1839), C. orchestis (Ratzeburg), C. pentheus (Walker, 1839), Chrysocharis phryne, C. purpurea Bukowski, 1938, Closterocerus delucchi (Boucek, 1971), Closterocerus lyonetiae (Ferriere), C. trifasciatus Westwood, 1833, Neochrysocharis chlorogaster (Erd.), Diglyphus isaea (Walker, 1838), Euplectrus bicolor (Swederus, 1795), Hemiptarsenus dropion (Walker), H. ornatus (Nees, 1834), Pediobius saulius (Walker, 1839); Pnigalio agraules (Walker, 1839), P. longulus (Zetterstedt, 1838), P. pectinicornis (Linnaeus, 1758), Pnigalio populifoliellae Erdoes, P. soemius (Walker, 1839), Sympiesis euspilapterygis (Erdoes), S. gordius (Walker, 1839); S. sericeicornis (Nees, 1834); Tetrastichinae: Baryscapus nigroviolaceus (Nees, 1834); Eutetrastichus amethystinus (Ratzeburg), Minotetrastichus frontalis (Nees, 1834), M. platanellus (Mercet); Eupelmidae: Eupelmus urozonus (Kiss, 1924), E. vesicularis (Retzius, 1783); Pteromalidae: Mesopolobus sp., Pteromalus semotus (Walker, 1834)

Edited by Dmitry Gavryushin on 14-07-2010 01:11

Posted by entomologo on 02-06-2011 09:20
#4

Dear Black,
I have just seen your photos. The parasitoid specimens belong surely to Pnigalio genus (Eulophidae), for my experience they
would be Pnigalio mediterraneus but to be sure I would have the specimens. Do you think would be possible to send me some specimens? At moment I am studying this genus so I would be happy to have your specimens.