Herein, we report the mitochondrial genomic characteristics of three insect pests, Notobitus meleagris, Macropes harringtonae, and Homoeocerus bipunctatus, collected from bamboo plants in Guizhou Province, China. For the first time, the damaged conditions and life histories of M. harringtonae and H. bipunctatus are described in detail and digital photographs of all their life stages are provided. Simultaneously, the mitochondrial genome sequences of three bamboo pests were sequenced and analyzed. Idiocerus laurifoliae and Nilaparvata lugens were used as outgroups, and the phylogenetic trees were constructed. The mitochondrial genomes of the three bamboo pests contained 37 classical genes, including 13 protein-coding genes (PCGs), two ribosomal RNA genes (rRNAs), 22 transfer RNAs (tRNAs), and a control region, with a total length of 16,199 bp, 15,314 bp, and 16,706 bp, respectively. The A+T values of the three bamboo pests were similar, and trnS1 was a cloverleaf structure with missing arms. The phylogenetic analyses, using the Bayesian inference (BI) and Maximum likelihood (ML), supported that N. meleagris and H. bipunctatus belonged to the Coreoidea family, whereas M. harringtonae belonged to the Lygaeoidea family with high support values. This study involves the first complete sequencing of the mitochondrial genomes of two bamboo pests. By adding these newly sequenced mitochondrial genome data and detailed descriptions of life histories, the database of bamboo pests is improved. These data also provide information for the development of bamboo pest control methods by quick identification techniques and the use of detailed photographs.

Three new species of the genus Parandes Muir, 1925 (Hemiptera, Fulgoromorpha, Cixiidae, Andini), P. elongatus Lv & Chen, sp. nov., P. guangxiensis Lv & Chen, sp. nov. and P. hamatus Lv & Chen, sp. nov., are described and illustrated from Southwest China (Yunnan and Guangxi) to give the genus six species in total. An updated identification key and checklist to all known species of Parandes are provided, as well as a map of their geographic distributions.

Three new species of the genus Oecleopsis Emeljanov, 1971 from China, O. acerbus Lv & Chen, sp. nov. and O. panxianensis Lv & Chen, sp. nov. from Guizhou Province, and O. digitatus Lv & Chen, sp. nov. from Sichuan Province, are described and illustrated. With these additions, the number of species in the genus is increased to 18. An updated identification key and checklist of all known species of Oecleopsis are provided as well as a map of their geographic distributions.

In this study, three new bamboo-feeding species of the genus Bambusiphaga Huang & Ding, 1979 (Hemiptera, Fulgoroidea, Delphacidae, Tropidocephalini), B. caudospina Lv, Li & Chen, sp. nov., B. laterospina Lv, Li & Chen, sp. nov. and B. striola Lv, Li & Chen, sp. nov. from Southwest China, are described and illustrated, bringing the total number of species in the genus to 34. An updated identification key and checklist to all known species of Bambusiphaga are provided.

Two new species of the genus Malaxa Melichar, 1914 from Southwest China, M. chongzuoensis Lv & Chen, sp. nov. from Guangxi Zhuang Autonomous Region, and M. longispina Lv & Chen, sp. nov. from Guangdong Province, are described and illustrated. These bring the total number of species in the genus to 13, with nine recorded from China. A checklist and map of all known species of Malaxa are provided, together with an identification key for Chinese species.

Mitochondrial genomes from nine species representing three genera of the planthopper tribe Andini (Hemiptera: Cixiidae) are sequenced and analyzed, providing the first mitogenomic data for this group. The mitogenomes range from 15,415 to 15,902 bp and contain 37 typical mitochondrial genes and an A + T‐rich region, with A + T content between 73.5% and 76.0%. An inversion of trnP and trnT relative to the ancestral gene order is identified. Protein‐coding genes (PCGs) start with standard codons (ATN/GTG/TTG) and terminate with complete (TAA/TAG) or incomplete (T) stop codons. Most tRNAs display canonical cloverleaf secondary structures, except for trnS1 in Andes hemina , Parandes circinatus , and Parandes fuscus , which lacks the DHU stem. Among the 13 PCGs, cox1 shows the lowest nucleotide diversity, while nad2 shows the highest. Ka/Ks ratios indicate purifying selection, ranging from 0.0578 ( cox1 ) to 0.3080 ( nad5 ). Phylogenetic analyses, based on the present sampling, support Andini and Cixiini as sister groups forming a clade sister to Pentastirini, consistent with previous studies. Within Andini, Andixius appears sister to a clade comprising Andes and Parandes . Andes hemina clusters within Parandes , supporting its transfer to that genus as Parandes hemina (Fennah 1978) comb. nov ., based on phylogenetic and morphological evidence. Divergence‐time estimates suggest rapid diversification of Andini during the Cretaceous and Paleogene. Ancestral state reconstructions suggest that the common stalk (ScP + R + MP) represents a derived condition, whereas the ancestral state involves veins ScP + R and MP arising separately from a common point on the basal cell.