Short Communication Description of a new species of Omyomymar Schauff from India with a key to Oriental species and first report of Palaeoneura markhoddlei Triapitsyn (Hymenoptera: Mymaridae) from the Indian subcontinent

Omyomymar hayati sp. nov. (Hymenoptera: Chalcidoidea: Mymaridae) is described from Tamil Nadu, India and key to Oriental species of Omyomymar is updated. Palaeoneura markhoddlei Triapitsyn, is reported from Indian subcontinent for the first time and key to Indian species is updated. The following known species, viz., Acmopolynema incognitum (Narayanan, Rao & Kaur), Platystethynium glabrum Jin & Li, Polynema (Polynema) bengalense Rehmat & Anis and Palaeoneura vegis Amer & Zeya are recorded from the Indian states of Rajasthan, Karnataka, Kerala, and Tamil Nadu, respectively.


Short Communication
Description of a new species of Omyomymar Schauff from India with a key to Oriental species and first report of Palaeoneura markhoddlei Triapitsyn (Hymenoptera: Mymaridae) from the Indian subcontinent Abbreviations: fl-flagellar segments | gt-gastral tergite | mpsmultiporous plate sensillum or sensilla | YPT-yellow pan trap.

PLATINUM OPEN ACCESS
The family Mymaridae is represented by 116 genera world-wide (Noyes 2019) and 39 from India. Totally, about 205 species are known from India (H. Sankararaman personal compilation upto August 2020). Of the two genera treated in this work, Omyomymar Schauff (1983) was erected by Schauff with descriptions of O. alar and O. griselli from U.S.A. and he also transferred Paranaphoidea silvana Oglobin and P. clavata Oglobin to Omyomymar and designated P. silvanum as the type species of Omyomymar. Presently, this genus contains six and seven species from New and Old World, respectively. In the Oriental region, Lin & Chiappini (1996) Anwar et al. (2014), followed by O. huberi Manickavasagam & Gowriprakash, and O. noyesi Manickavasagam & Gowriprakash by Gowriprakash & Manickavasagam (2016).
Palaeoneura was erected by Waterhouse (1915) with P. interrupta as the type species. Currently, this genus is represented by 53 species around the world, of which six species of kusnezovi group are known from India (Amer & Zeya 2019). Recently, P. markhoddlei was described by Triapitsyn (2018a) from USA. Members of this genus are known to parasitize eggs of Cicadellidae (Hemiptera) J TT (Noyes 2019).
In the present paper, eighth Oriental species of Omyomymar is described from material collected from Tamil Nadu and Kerala, India. The previous key to the Oriental species of Omyomymar (Gowriprakash & Manickavasagam 2016) is updated. Palaeoneura markhoddlei is recorded from the Indian Subcontinent for the first time and key to Indian species of Palaeoneura (Amer & Zeya 2019) is updated.

Materials And Methods
Specimens were collected using yellow pan traps (Noyes 1982) from various Indian states. Recovered parasitoids were processed using hexamethyldisilazane (Brown 1993) and card or slide mounted for study. All the specimens are deposited with Entomology Department, Annamalai University (EDAU), Chidambaram, Tamil Nadu, India. All measurements are in microns. Habitus images were captured using Leica M205C stereozoom microscope (while specimens were in ethanol before slide mounting) and the slide mounted parts using Leica DM 750 phase contrast microscope. Images were stacked using montage and Combine ZP software, and then processed using Adobe Photoshop version 7.0. Terms used in the description follow Gibson (1997).
Head 1.1× as wide as high; antenna with (Image 1B, C) scape about 3.5× as long as wide; pedicel about 1.8× as long as wide; fl 1 the longest; fl 2 longer than fl 3 ; clava 2-segmented, 3.1× as long as wide, with apical incision and as long as fl 4-6 combined. Basal segment of clava with one mps and one placoid sensilla, apical segment with three mps and four placoid sensilla.
Mesosoma (Image 1A) 0.7× gaster length, pronotum, mesoscutum, anterior scutellum faintly reticulate; frenum substrigulate; propodeum smooth. Mid lobe of mesoscutum with two pairs of setae and lateral lobe of mesoscutum with one pair of setae; anterior scutellum with one pair of setae. Fore wing (Image 2A) about 9.4× as long as wide, proximal half or so of wing disc almost bare, distal half with two lines of setae running parallel to wing margins; longest marginal seta about 1.75× as long as maximum wing width. Hind wing (Image 2B) 26.5× as long as wide, longest marginal seta about 5.0× as long as maximum wing width.

Brief diagnosis
Vertex with sparse, short setae; scape as long as wide and smooth; pedicel shorter than Fl 1 ; Fl 3 the longest and fl 6 the widest; fore wing disc notably narrow, hyaline with brownish tinge along apical margin and also anterior margin sub apically. Ovipositor occupying almost entire length of gaster, notably exserted beyond gastral apex (Image 3B) (Triapitsyn 2018a Hosts: Unknown, but is assumed to be egg parasitoid of leafhopper from tribe Nirvanini Baker (Hemiptera: Cicadellidae: Evacanthinae) (Triapitsyn 2018a).
Comments: All three specimens collected from India exactly match with description given by Triapitsyn (2018a).
Brief diagnosis: Face below toruli with 12 setae on each side; wings subhyaline; fore wing slightly infumate in basal third and along anterior margin; pronotum entire; ovipositor hardly exserted beyond gastral apex (Amer & Zeya 2019 www.threatenedtaxa.org The Journal of Threatened Taxa (JoTT) is dedicated to building evidence for conservation globally by publishing peer-reviewed articles online every month at a reasonably rapid rate at www.threatenedtaxa.org. All articles published in JoTT are registered under Creative Commons Attribution 4.0 International License unless otherwise mentioned. JoTT allows allows unrestricted use, reproduction, and distribution of articles in any medium by providing adequate credit to the author(s) and the source of publication.