Comparative morphological analysis of two gall midge pests(Diptera:Cecidomyiidae)in Lycium barbarum
[Objective]This study aimed to clarify and compare the morphological characteristics of two gall midge pests(Gephyraulus lycantha and Contarinia sp.)on Lycium barbarum.[Method]Microscopic and scanning electron microscopic techniques were employed to observe and compare the morphology of dif-ferent stages and body parts of the two gall midges.Specifically,the body color,larval sternum slices,dorsal spines of the pupa,antennae,and genitalia were examined and compared.[Result]Significant differences were observed between the two gall midges.G.lycantha exhibited an orange-red body color,"Y"-shaped sternum in the larval stage,irregular short spines on the dorsal side of the pupa,square-shaped male adult grippers without setae,and stout oviposition needles in female adults.On the other hand,Contarinia sp.dis-played a white body,"T"-shaped larval sternum,regular long spines on the dorsal side of the pupa,triangular male adult grippers with long bristles,and long and thin oviposition needles in female adults.[Conclusion]The distinct differences observed in terms of larval sternum slices,dorsal spines of the pupa,and adult geni-talia between the two gall midges suggest the need for further taxonomical studies.The findings of this re-search can serve as a valuable reference for the identification,monitoring,control,and future investigations of these two gall midge pests on L.barbarum.
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