A new species of Exoristobia (Hymenoptera: Encyrtidae) from China
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ORIGINAL PAPER
A new species of Exoristobia (Hymenoptera: Encyrtidae) from China Guohao Zu1 · Chen Zhang1 · Zening Yang1 · Chengde Li2
Received: 17 March 2020 / Accepted: 2 July 2020 © Northeast Forestry University 2020
Abstract Exoristobia sinica sp. nov. is described as new to science and a key is provided to the Chinese species based on females. Keywords Chalcidoidea · Encyrtinae · Parasitoids · Taxonomy · Tianjin
Introduction The genus Exoristobia, a genus of Hymenoptera parasitic wasps, was established by Ashmead (1904) based on the type species E. philippinensis Ashmead. Currently this genus consists of nine species (Noyes 2019), one from China (Xu and Lou 2000). The species are distributed throughout the world except for the Neotropics. They are parasites of the Order Diptera, the families Tachinidae, Syrphidae, Anthomyiidae, Calliphoridae, Muscidae, Sarcophagidae, Lepidoptera and Coleoptera, which are possibly reared from Project Funding: The work was supported by the Scientific Project of Tianjin Municipal Education Commission (No. 2019KJ035). The online version is available at http://www.springerlink.com. Corresponding editor: Tao Xu. Yunze Chen and Jing Yang contributed equally to this work.
Dipteran primary parasitoids such as tachinids (Ashmead 1893; Subba Rao 1970; Noyes and Hayat 1984; Xu and Lou 2000). In this paper, E. sinica sp. nov. is described as new to science.
Materials and methods The Parasitic wasps were collected from plantations of Chinese red date (Ziziphus jujuba L.) at the Tianjin Agricultural University in a malaise trap, dissected and mounted on slides according to Noyes (1982). Body lengths were measured using a Leica M205A stereomicroscope; other measurements are relative and taken from micrometer divisions placed in the eye piece of a stereozoom microscope for carded specimens, and in the eye piece of a compound microscope for slide-mounted parts, and then transformed into absolute lengths. The Holotype of the new species is deposited in the ’insect collections’ of Tianjin Agricultural University, China. Morphological terminology and abbreviations is based on Noyes (2010). The following abbreviations are used: F1–6, funicle segments 1–6; AOL, minimum distance between a lateral ocellus and median ocellus; OCL, minimum distance between a lateral ocellus and occipital margin; OD, longest diameter of an ocellus; OOL, minimum distance between a lateral ocellus and the corresponding eye margin; POL, minimum distance between lateral ocelli; OL, length of ovipositor; GL, length of gonostylus or apical segment.
* Chengde Li [email protected] 1
College of Horticulture and Landscape, Tianjin Agricultural University, Tianjin 300384, People’s Republic of China
2
School of Forestry, Northeast Forestry University, Harbin 150040, People’s Republic of China
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Results Key to species of Exoristobia (females) from China 1. Clava black, strongly obliquely truncated at apex; antennal toruli with dorsal margins below ventral eye margins ···················
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