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The classification system and the higher level phylogenetic relationships of Pentatomomorpha, the second largest infraorder of Heteroptera (Insecta: Hemiptera), have been debated and remain controversial over decades. In particular, the placement and phylogenetic relationship of Idiostoloidea are not well resolved, which hampers a better understanding of the evolutionary history of Pentatomomorpha. In this study, for the first time, we reported the complete mitochondrial genome for two narrowly distributed families of Idiostoloidea (including Idiostolidae and Henicocoridae), respectively. The length of the mitochondrial genome of Monteithocoris hirsutus and Henicocoris sp. is 16,632 and 16,013 bp, respectively. The content of AT is ranging from 75.15% to 80.48%. The mitogenomic structure of Idiostoloidea is highly conservative and there are no gene arrangements. By using the Bayesian inference, maximum likelihood, and Bayesian site‐heterogeneous mixture model, we inferred the phylogenetic relationships within Pentatomomorpha and estimated their divergence times based on concatenated mitogenomes and nuclear ribosomal genes. Our results support the classification system of six superfamilies within Pentatomomorpha and confirm the monophyletic groups of each superfamily, with the following phylogenetic relationships: (Aradoidea + (Pentatomoidea + (Idiostoloidea + (Coreoidea + (Pyrrhocoroidea + Lygaeoidea))))). Furthermore, estimated divergence times revealed that most pentatomomorphan superfamilies and families diverged during the Late Jurassic to Early Cretaceous, which coincides with the explosive radiation of angiosperms. [ABSTRACT FROM AUTHOR]

Aim: Similar environmental selection pressures drive the occurrence of convergent evolution among species. However, studies on this phenomenon are scarce at the population level. Here, we used two waist‐shaped bugs to test the hypothesis that similar high‐elevation habitat environments could lead to similar genetic adaptations among populations of different species. Location: East Asia. Taxa: Malcus sinicus Štys, 1967 & Malcus insularis Štys, 1967. Methods: Population genetic structure was determined by phylogenetic and phylogeographical analyses. Demographic history was inferred by comparing simulated history models. Suitable habitat from the last interglacial period (LIG) to the present was predicted by ecological niche modelling (ENM). Convergent evolutionary processes were jointly assessed by the comparison of population ecological differences and the principal component analysis of environmentally related single‐nucleotide polymorphisms (SNPs). Results: Our results showed that the land bridge in the Pleistocene helped ancestral populations of M. sinicus and M. insularis diffuse from mainland China to Taiwan Island. Subsequently, the geographical barrier imposed by the Taiwan Strait promoted the species differentiation. Geographic isolation and adaptive evolution jointly promoted the population differentiation in M. sinicus. Genetic similarity was found between the populations of M. sinicus in southwestern China (sin‐YN) and M. insularis on Taiwan Island (ins‐TW). Temperature‐related environmental factors and elevation were found to similarly and significantly clustered with ins‐TW and sin‐YN and were clearly distinguished from the other low−/mid‐elevation populations of M. sinicus (sin‐EA). Furthermore, the SNPs related to these environmental factors presented the same clustering results. Main Conclusions: Our study revealed a novel disjunct distribution pattern between southwestern China and Taiwan Island at the population level and provided evidence of convergent evolution of local populations in high‐elevation environments. Here, we revealed that similar environmental selection pressures can drive the occurrence of convergent evolution at the population level among different species. [ABSTRACT FROM AUTHOR]

[Objectives] This paper aims at solving the problem of pipe body failure by the local abnormal deformation of Filament-Wound Flexible Pipe (FW-FP).[Methods] A method of monitoring the deformation of the pipe body on the basis of the principle of resistance detection is proposed. By optimizing the design of the sensor winding model,the three kinds of deformation state of the pipe body are analyzed, a reference threshold model established and a typical DN100 flexible pipe used for numerical calculation and analysis.[Results] The current variation of circuits caused by local abnormal deformation can reach 0.25 A,but the current variation of circuits caused by normal deformation is negligible.[Conclusions] It is proven that this method can effectively identify the local abnormal deformation of FW-FP and eliminate the signal interference caused by normal deformation. The results of this study can provide references for the follow-up service life evaluation of FW-FP.