Anagrus (Anagrus) turpanicus Triapitsyn & Hu

Hu, Hong-Ying & Triapitsyn, Serguei V., 2016, Anagrus turpanicus sp. n. (Hymenoptera: Mymaridae) from China, an egg parasitoid of Arboridia kakogowana (Hemiptera: Cicadellidae), Zootaxa 4161 (4), pp. 573-578 : 573-577

Anagrus (Anagrus) turpanicus Triapitsyn & Hu , sp. n.

( Figs 1–9 )

Type material. Holotype female on slide ( Fig. 1 ), deposited in ICXU, labeled: 1. “ CHINA: Xinjiang, Turpan, Ya’er Guolecun , 42°56’43’’N 89°05’’37’E, 53 m, 9.vii.2014, W. Cao (Cao Wenqin) From eggs of Arboridia kakogowana (Matsumura) on table grape leaves”; 2. [in pencil], same data in Chinese (except lacking the leafhopper host name and also “Ya’er Guolecun”) but the collection date, coordinates, and altitude as, respectively, “2014.7.9”, “N : 42°56.716’ E: 89°05.616’ H: 44.8 m ”, and also the initial identification as “ Anagrus ♀”; 3. [red] “ Anagrus (Anagrus) turpanicus Triapitsyn & Hu HOLOTYPE ♀”. The correct name of the collector is Cao Wen-qiu. Paratypes, same data: 6 females and 5 males on slides [ CNC (1♀), ICXU (3♀ and 3♂) and UCRC (2♀ and 2♂), respectively], as well as 1 ♀ and 1 ♂ on points [ UCRC]. From one paratype female deposited in the UCRC, DNA was extracted prior to slide-mounting (Paul Rugman-Jones’ molecular voucher PR15-021); the aliquot is maintained in UCRC, but no sequencing has been done yet.

Description. Female. Body length of dry-mounted, critical point-dried paratypes 0.4–0.43 mm (includes measurements taken prior to slide-mounting). Head yellowish to light brown except eyes and ocelli reddish; mesosoma mostly yellowish-brown except anterior half or so of mesoscutum brown, frenum of scutellum yellowish-white; mesosoma brown basally and apically and light brown medially; scape, pedicel and F1 light brown, rest of flagellum brown; legs yellowish-brown, wings hyaline. Head a little wider than mesosoma. Antenna ( Figs 2, 3 ) with scape 3.0– 3.8× as long as wide, with cross-ridges, 2.0–2.2× length of pedicel; F1 subglobular, at least slightly less than half of pedicel length; F2 a little shorter than F3 when F3 bears one mps ( Fig. 2 ) but when F3 lacks mps ( Fig. 3 ), about as long as F3 (both always shorter than following funicular segments); F4 either the longest funicular segment or about as long as F5 and F6; mps on F3 (0 or 1), F4 (1); F5 (1), and F6 (2); clava with 5 mps, 3.0–3.5× as long as wide, longer than combined length of F5 and F6. Mesosoma shorter than metasoma. Midlobe of mesoscutum without adnotaular setae ( Fig. 4 ). Fore wing ( Fig. 6 ) 7.5–8.0× as long as wide, longest marginal seta 2.6–2.9× maximum wing width; distal macrochaeta 1.5–1.6× length of proximal macrochaeta; disc with several rows of setae in addition to admarginal rows of setae (1 such row just beyond apex of venation and about 2 to 4 irregular rows in broadest part of disc), leaving a distinct bare area near posterior margin. Hind wing ( Fig. 6 ) 22–27× as long as wide, longest marginal seta 6.9–7.8× maximum wing width; disc mostly bare except for incomplete admarginal rows of setae. Ovipositor anteriorly either not extending or at most extending to (but not overlapping) mesophragma in slide-mounted specimens, and posteriorly only exserted a little beyond apex of gaster (by 0.06–0.1× total ovipositor length). Second valvifers (= external plates of ovipositor, e.g., Chiappini (1989) and Chiappini et al. (1996)) each with 3 distal setae ( Fig. 5 ). Ovipositor 2.1–2.4× length of protibia (2.4× in the holotype).

Measurements (mm) of the slide-mounted holotype female (as length or length:width). Body 0.541; head 0.105; mesosoma 0.197; gaster 0.246; ovipositor 0.209. Antenna: scape 0.073; pedicel 0.033; F1 0.015; F2 0.033; F3 0.035; F4 0.042; F5 0.04; F6 0.04; clava 0.102. Fore wing 0.442:0.055; longest marginal seta 0.16. Hind wing 0.394:0.018; longest marginal seta 0.124.

Male. Body length of the dry-mounted, critical point-dried paratype (measured prior to slide-mounting) 0.462 mm. Similar to female except for the normal sexually dimorphic features such as the antenna ( Fig. 7 ) and genitalia ( Fig. 9 ), and the following. Body light brown to brown except anterior scutellum yellow and frenum of scutellum white (metasoma darker than mesosoma), appendages light brown. Scape 2.3–2.6× as long as wide, F1 a little shorter and usually slightly wider than following flagellomeres. Fore wing ( Fig. 8 ) 6.0–6.8× as long as wide.

Diagnosis. This new species belongs to the incarnatus species group of A. ( Anagrus Haliday ), as defined by Chiappini et al. (1996), in whose key it runs to A. takeyanus Gordh , a lace bug ( Hemiptera : Tingidae ) egg parasitoid, and A. epos Girault. Females of A. takeyanus have a much wider fore wing, at most 6× as long as wide, and A. epos has adnotaular setae on the midlobe of the mesoscutum. In Chiappini & Lin (1998), A. turpanicus keys tentatively to A. nilaparvatae Pang & Wang , but females of the latter species, like those of A. columbi Perkins and A. incarnatosimilis Soyka , lack a distinct bare area on the widest part of the disc. In Triapitsyn & Berezovskiy (2004), A. turpanicus keys to A. breviphragma Soyka , which is now treated as a synonym of A. incarnatus Haliday ( Triapitsyn 2015b) ; however, it differs from the latter in having F2 of the female antenna always shorter than F4, F5, and F6. In females of A. breviphragma , F2 is the longest funicular segment ( Chiappini et al. 1996) and the ovipositor is relatively longer, at least 2.7× the length of the protibia ( Chiappini 1989; Chiappini et al. 1996). In A. turpanicus , the ovipositor is at most 2.4× the length of the protibia. In the world key to the species of Anagrus by Triapitsyn (2015a), females of A. turpanicus key to A. takeyanus .

Etymology. The species is named after its type locality, Turpan.

Host. Leafhoppers captured on grape leaves in the same vineyard as from which A. turpanicus was reared represented a single species that were identified by Dmitry A. Dmitriev as A. kakogowana . Voucher specimens are in ICXU, INHS, and UCRC. Parasitoids of the type series were definitely obtained from eggs of A. kakogowana also because nymphs and then adults of this leafhopper species were reared from unparasitized eggs during the same collecting event and were later compared with the positively identified specimens.

Figures

FIGURES 1 – 4. Anagrus turpanicus (female): 1, slide (holotype); 2, antenna (holotype), F 3 with a mps; 3, antenna minus scape (paratype), F 3 without mps; 4, mesoscutum (paratype).

FIGURES 5, 6. Anagrus turpanicus (female, paratypes): 5, ovipositor (arrows pointing to distal setae on one of its external plates, or second valvifers); 6, fore and hind wings.

FIGURES 7 – 9. Anagrus turpanicus (male, paratypes): 7, antenna; 8, fore wing; 9, genitalia.