New data on larvae of weevils of the genus Lixus (Coleoptera, Curculionidae) from central Asia

Nikulina, O. N.

doi:10.1134/s0013873807060103

Cited by 9 publications

(13 citation statements)

References 2 publications

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“…The following descriptions of mature larvae from the tribe Lixini confirmed this diagnosis: genus Larinus (Scherf 1964; Lee and Morimoto 1988; Nikulina et al 2004; Zotov 2009a, 2010; Gosik and Skuhrovec 2011; Nikulina and Gültekin 2014); genus Lixus (Scherf 1964; Lee and Morimoto 1988; May 1994; Nikulina 2001, 2007; Zotov 2009a, b; Nikulina and Gültekin 2011; Gosik and Wanat 2014; Skuhrovec and Volovnik 2015; Trnka et al 2016); and Rhinocyllus conicus (May 1994), in addition to descriptions of all known species from the tribe Cleonini (Zotov 2011; Stejskal et al 2014; Trnka et al 2015). For a proper comparison of both tribes, including a key and detailed generic studies, further descriptions of immature stages of several Cleonini would be required.…”

Section: Resultsmentioning

confidence: 79%

Description of the immature stages of Larinus vulpes and notes on its biology (Coleoptera, Curculionidae, Lixinae)

Skuhrovec¹,

Volovnik

Gosik³

2017

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Mature larva and pupa of Larinus vulpes (Olivier, 1807) (Curculionidae: Lixinae: Lixini) are morphologically described for the first time and compared with known larvae and pupae of other Larinus species. Very high counts of larval body setae (pronotum with more than 25 setae and postdorsum on meso- and metathorax and also on abdominal segments I–VII with more than 12 setae) are characteristic features of the nominotypical subgenus Larinus. The biology of the species was studied in Ukraine. Echinops ruthenicus and E. sphaerocephalus were identified as host plants of both larvae and adults of this weevil based on the present research in Ukraine, which shows probably oligophagous. Overwintering beetles emerged at the end of May or earlier, then feeding and mating on the host plants. The highest level of adult activity was observed at the end of June. Larvae were endophagous within the flower heads. In July and August, the larvae pupated within inflorescences in a pupation cell. Adults exited the cells at the end of August and did not hibernate on the host plants. Sometimes, larvae and imagines of a new generation were found outside the flower heads in chambers constructed on the stems.

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Section: Resultsmentioning

confidence: 79%

Description of the immature stages of Larinus vulpes and notes on its biology (Coleoptera, Curculionidae, Lixinae)

Skuhrovec¹,

Volovnik

Gosik³

2017

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“…To date, larvae of 21 Lixus and two Hypolixus species have been described (Scherf 1964; Lee and Morimoto 1988; May 1994; Nikulina 2001, 2007; Zotov 2009a, b; Nikulina and Gültekin 2011; Gosik and Wanat 2014; Skuhrovec and Volovnik 2015), but a detailed description of the pupae is known for only 8 Lixus species (Scherf 1964; May 1994; Zotov 2009a, b; Gosik and Wanat 2014; Skuhrovec and Volovnik 2015). …”

Section: Discussionmentioning

confidence: 99%

“…May (1993) considered the increased number of pds on the meso- and metathorax and abdominal segments I–VII and the increased number of setae on the epipharyngeal lining ( als ) (i.e., higher than the most frequent number of setae in weevils) as diagnostic of the mature larva of the Lixinae subfamily, and the descriptions of mature larvae from the tribe Lixini ( Larinus species: Zotov 2009a, 2010; Gosik and Skuhrovec 2011; Lixus species: Scherf 1964; Lee and Morimoto 1988; May 1994; Nikulina 2001, 2007; Zotov 2009a, b; Nikulina and Gültekin 2011; Gosik and Wanat 2014; Skuhrovec and Volovnik 2015; Rhinocyllus conicus : May 1994) fit this diagnosis, as do all known species from the tribe Cleonini (Stejskal et al 2014, Trnka et al 2015). Currently, the comparison of both tribes, including key and detailed generic studies, is impossible due to our limited knowledge of the immature stages.…”

Section: Discussionmentioning

confidence: 99%

“…Some species from this genus are considered to be agricultural pests (e.g., Lixus incanescens Boheman, 1835 in Manole 1990; others in Volovnik 1988; Nikulina 1989), but others could be used for the biological control of selected weeds (e.g., Lixus filiformis (Fabricius, 1781) for musk thistle; Gültekin 2004) or have already been used for these purposes (e.g., Lixus cardui Olivier, 1807 in Australia; Nikulina and Gültekin 2011). Detailed morphological descriptions have been published for the larvae of 21 Lixus species, with detailed descriptions of the pupae being available for only eight species (see Scherf 1964; Lee and Morimoto 1988; May 1994; Nikulina 2001, 2007; Zotov 2009a, b; Nikulina and Gültekin 2011; Gosik and Wanat 2014; Skuhrovec and Volovnik 2015). …”

Section: Introductionmentioning

confidence: 99%

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The morphology of the immature stages of two rare Lixus species (Coleoptera, Curculionidae, Lixinae) and notes on their biology

Trnka¹,

Stejskal²,

Skuhrovec³

2016

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The mature larvae and pupae of Lixus (Ortholixus) bituberculatus Smreczyński, 1968 and Lixus (Dilixellus) neglectus Fremuth, 1983 (Curculionidae: Lixinae: Lixini) are described and compared with known larvae of 21 other Lixus and 2 Hypolixus taxa. The mature larva and pupa of Lixus bituberculatus are the first immature stages described representing the subgenus Ortholixus. The larva of Lixus neglectus, in the subgenus Dilixellus, is distinguished from the known larvae of four species in this subgenus by having more pigmented sclerites on the larval body. All descriptions of mature larvae from the tribe Lixini, as do all known species from the tribe Cleonini, fit the diagnosis of the mature larva of the Lixinae subfamily. Furthermore, new biological information of these species in the Czech Republic, Slovakia and Romania is provided. For Lixus bituberculatus, a chicory, Cichorium intybus L. (Asteraceae), is identified as a host plant, and Lixus neglectus is found on dock Rumex thyrsiflorus Fingerh. (Polygonaceae). Both species are probably monophagous or oligophagous. Adults of Lixus bituberculatus often inhabit host plants growing in active, dry and sunny pastures with sparse patches without vegetation, being mostly active during the night in April/May and then again in September, when the highest activity levels are observed. Adults of Lixus neglectus inhabit dry grasslands on sandy soils with host plants, being active during the day from May to September, with the highest level of activity in May/June and September. The larvae of both species are borers in the stem and root of the host plant, and they pupate in root or root neck. Adults leave the pupation cells at the end of summer and do not hibernate in the host plants. Finally, Romania is a new geographic record for Lixus bituberculatus.

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“…Recognising and distinguishing them is more difficult than adults, especially for closely related species. There are few published data on the larval morphology of Lixus , about 20 species (Ter‐Minassian 1936, 1943; Scherf 1964; Lee & Morimoto 1988; Nikulina 2001, 2007). In the studies of biological control of weeds, the identification of larval stages can be more important than the identification of adults.…”

Section: Introductionmentioning

confidence: 99%

Larval morphology ofLixus carduiOlivier andLixus filiformis(Fabricius) (Coleoptera: Curculionidae): biological control agents for scotch and musk thistles

Nikulina

Gültekin

2011

Australian Journal of Entomology

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New data on larvae of weevils of the genus Lixus (Coleoptera, Curculionidae) from central Asia

Cited by 9 publications

References 2 publications

Description of the immature stages of Larinus vulpes and notes on its biology (Coleoptera, Curculionidae, Lixinae)

Description of the immature stages of Larinus vulpes and notes on its biology (Coleoptera, Curculionidae, Lixinae)

The morphology of the immature stages of two rare Lixus species (Coleoptera, Curculionidae, Lixinae) and notes on their biology

Larval morphology ofLixus carduiOlivier andLixus filiformis(Fabricius) (Coleoptera: Curculionidae): biological control agents for scotch and musk thistles

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