Trionymus multivorus (Kiritchenko),

Moghaddam, Masumeh, 2013, A review of the mealybugs (Hemiptera: Coccoidea: Pseudococcidae, Putoidae and Rhizoecidae) of Iran, with descriptions of four new species and three new records for the Iranian fauna, Zootaxa 3632 (1), pp. 1-107: 92

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Trionymus multivorus (Kiritchenko)


Trionymus multivorus (Kiritchenko) 

( Fig. 51View FIGURE 51)

Pseudococcus multivorus Kiritchenko, 1936: 151  . Pseudococcus mendosus Kiritchenko, 1936 a: 153  . Trionymus elymus Borchsenius, 1937: 46  .

DIAGNOSIS. Female body elongate to broadly oval. Antennae 7 or 8 segmented. Legs well developed, without translucent pores. Cerarii numbering 5 pairs, present on posterior abdominal segments. C 18 with 2 stout conical setae, 7−12 auxiliary setae and numerous trilocular pores, all situated on a weakly sclerotized area; C 17 with 2 smaller conical setae, 4−6 auxiliary setae and a few trilocular pores; more anterior cerarii each with 2 conical setae and 3−5 trilocular pores. Circulus absent. Ostioles present. Multilocular disc pores on dorsum distributed on abdominal segments V −VII; present also on venter, in transverse rows on abdominal segments IV −VII and posterior to vulva. Trilocular pores present, located on dorsum and venter. Oral collar ducts of 2 sizes, numerous on both surfaces.

DISTRIBUTION. Australasian, Palaearctic: Armenia, Azerbaijan, Crete, France, Georgia, Hungary, Iran, Italy, Kazakhstan, Poland, Russia, Tajikistan, Turkey, Turkmenistan and Uzbekistan. In Iran, T. multivorus  occurs in Ardebil, Esfahan, Fars, Hamadan, Kermanshah, Lorestan and Markazi. This mealybug is known from 19 host plant familities worldwide (Ben-Dov et al., 2012).

MATERIAL EXAMINED. Ardebil: Ardebil, Neor Lake, 2 adult Ƥ, Echinops ritro  ( Asteraceae  ), 2008, 2585 m.; Mogan, 3 adult Ƥ, on Lactuca  sp. ( Asteraceae  ), 2005 (M. Taghizadeh). Esfahan: Khour, 10 km to Jandagh, 7 adult Ƥ, on Matricaria chamomilla  ( Asteraceae  ), 13.iv. 2010, 1184 m.; Natanz, 2 adult Ƥ, on Echinops  sp., 2011, 2419 m. Niasar, Aznaveh, 19.v. 2009, 2132 m. Fars: Eghlid, Shahrmiyan, 18 adult Ƥ, on Echinops  sp., 2010, 2347 m.; Fasa, 6 adult Ƥ, on Hibiscus  sp. ( Malvaceae  ), 1.v. 1968 (Unknown); Shiraz, 5 adult Ƥ, Lactuca  sp., 19.xi. 1998. Hamadan: Hamadan, Morad Beyk Valley, 4 adult Ƥ, on Astragalus  sp. ( Fabaceae  ), 6.v. 2006, 2322 m. Kerman: Sirch, 2 adult Ƥ, Echinops  sp., 17.v. 2011, 2427 m. Kermanshah: Mahidasht, 1 adult Ƥ, on E. ritro  , 30.v. 2006, 1558 m.; Ravansar, 4 adult Ƥ, on E. ritro  , 2006; Sarpol -e Zohab, 6 adult Ƥ, on E. ritro  , 30.v. 2006, 525 m.; Sahneh, 2 adult Ƥ, on E. ritro  , 30.v. 2006, 1582 m. Lorestan: Dorood, Gahar, unknown plant, 13 adult Ƥ, 2007, 1909 m. Markazi; Arak, Mohajeran, Park -e Azadi, 6 adult Ƥ, on Echinophora  sp. ( Apiaceae  ), 5 adult Ƥ, Cirsium  sp. ( Asteraceae  ), 13 adult Ƥ, Serratula  sp. ( Asteraceae  ), 25.v. 2010, 2119 m. (M. Alikhani).

COMMENTS. This polyphagous mealybug occurs mostly on the roots and root crowns of a variety of herbaceous plants, and on the stems and leaves. Although T. multivorus  is widespread in Iran, it is not considered a pest.