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Scientia Silvae Sinicae ›› 2025, Vol. 61 ›› Issue (1): 159-165.doi: 10.11707/j.1001-7488.LYKX20230513

• Research papers • Previous Articles     Next Articles

A New Species of Sinoscolia Wei & Nie (Hymenoptera: Tenthredinidae) Mining Leaves of Pterocarya stenoptera

Beibei Tan1,Huaijun Fu2,Gengyun Niu1,*(),Meicai Wei1()   

  1. 1. College of Life Sciences, Jiangxi Normal University Nanchang 330022
    2. Management Office of Beijing Botanical Garden Beijing 100093
  • Received:2023-10-22 Online:2025-01-25 Published:2025-02-09
  • Contact: Gengyun Niu E-mail:gyniu@126.com;weimc@126.com

Abstract:

Objective: A new sawfly pest mining leaves of Pterocarya stenoptera in North China was reported and described. The systematic status of Fenusinae and Heterarthrinae as well as some genera and species of mining sawflies were clarified. Method: The classical comparative morphology was used to clarify the name and the systematic status of the pest. The whole genome of the new pest was sequenced by second-generation sequencing technology. Mitogenome was assembled and the phylogenetic trees of Fenusinae were inferred. Result: The pest was confirmed to be a new species of Fenusinae, Tenthredinidae: Sinoscolia fengyang Wei & Niu, sp. nov. This new species is similar to the type species, Sinoscolia brevicornis Wei & Nie, but differs from the latter by the following characteristics: the anterior margin of clypeus incised, labrum brownish black; the postocellar area not higher than top of ocelli, the middle furrow shallow; the middle fovea clearly smaller than frons, the frontal walls subquadrate; frons broader than distance between frons and inner margin of eye; antenna about 1.6 times as long as head breadth; the anal cell of hind wing more than 2 times as long as anal petiole, the anal petiole 1.5 times as long as cu-a. Sinoscolia Wei & Nie, 1998 is a genus endemic to China and is similar to Scolioneura Konow, but differs from it by the mandibles asymmetric, left mandible with 3 teeth and right one with 2 teeth; the cell R1 in hind wing broadly open; serrulae almost flat; penis valve with distinct ventral apical process. Based on mitochondrial genome data, a molecular phylogenetic relationship was established to briefly discuss the systematic status of Fenusinae as well as some genera and species. Conclusion: Sinoscolia fengyang is a new species of Fenusinae based on morphological study and the mitochondrial genomic analysis. Heterarthrinae is an ingroup of Fenusinae, so the former should be merged into Fenusinae. Both Kaliofenusa and Fenusa are valid and independent genera. Fenusella nana (Klug, 1816) is not a member of Fenusella, and Profenusa japonica Togashi, 1981 is not a member of Profenusa.

Key words: Hymenoptera, Tenthredinidae, Heterarthrinae, Sinoscolia, Pterocarya

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