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Russian Entomol. J. 22(2): 135136

ї RUSSIAN ENTOMOLOGICAL JOURNAL, 2013

A new species of the genus Echthroplexiella Mercet, 1921 (Hymenoptera: Encyrtidae) from the Moscow Province Новый вид рода Echthroplexiella Mercet, 1921 (Hymenoptera: Encyrtidae) из Московской области Vladimir A. Trjapitzin В.А. Тряпицын
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Do vostrebovania, Post Office 129344 (ulitsa Letchika Babushkina, 7) Moscow, Russia. До востребования, п/о 129344 (ул. Летчика Бабушкина, 7) Москва, Россия.

KEY WORDS: Hymenoptera, Encyrtidae, Echthroplexiella rimshai sp.n., Russia, Moscow Province. КЛЮЧЕВЫЕ СЛОВА: Hymenoptera, Encyrtidae, Echthroplexiella rimshai sp.n., Россия, Московская область. ABSTRACT. The encyrtid Echthroplexiella rimshai sp.n. is described from the Moscow Province. It is compared with E. niveicornis Hoffer, 1963 from Slovakia. РЕЗЮМЕ. Из Московской области описан энциртид Echthroplexiella rimshai sp.n. , сравниваемый с E. niveicornis Hoffer, 1963 из Словакии. The encyrtid genus Echthroplexiella Mercet, 1921 (type species: E. submetallica Mercet, 1921) belongs to the subfamily Encyrtinae, tribe Echthroplexiellini. Earlier I have published its diagnosis with a key to 28 world species and their synopsis [Trjapitzin, 2006]. Since then, only redescription of the lectotype of E. irinae Nikolskaya, 1952 from the Orenburg Province of Russia was added to the knowledge of this genus [Trjapitzin, 2007]. Biology of Echthroplexiella is insufficiently studied; specifically, only several species were reared from coccoids of the family Eriococcidae (Homoptera). E. popovi Trjapitzin et Rosanov, 1972 was shown to be a secondary endoparasitoid of Acanthococcus salsolae Borchsenius in prepupae of its primary endoparasitoid Anagyrus hammadae Trjapitzin et Rosanov, 1972 in Uzbekistan. An abbreviation used in the text: F an antennal funicular segment. Echthroplexiella rimshai Trjapitzin sp.n. Fig. 1.
TYPE MATERIAL. Holotype : Russia, Moscow Province, Pushkino district, Mamontovka [now a part of the town of Pushkino], Sosnovka, MT [Malaise trap], 1626.V.2001 (E.Ya. Shuvakhina). In the collection of the Zoological Institute, Russian Academy of Sciences, in St. Petersburg.

Fig. 1. Echthroplexiella rimshai sp.n., female antenna. Рис. 1. Echthroplexiella rimshai sp.n., усик самки.

DESCRIPTION. Female (holotype). Body compact, slightly flattened. Occipital margin sharp, posterior margins of eyes nearly touching it. Minimum width of vertex about 0.25Ч maximum head width; frontovertex 2Ч as long as wide. Ocelli form a slightly acute triangle with apical angle

somewhat less than 60њ; posterior ocelli almost touching eye margins; distance from posterior ocelli to occipital margin slightly more than distance between them. Antennal scape (Fig. 1) broadened and flattened, 3Ч as long as wide; pedicel 3Ч shorter that scape; funicle somewhat broadening towards apex; F1F3 distinctly transverse, F4F6 only slightly transverse; clava 3-segmented, as long as three preceding funicular segments combined, strongly obliquely truncate on the dorsal side, this truncation about as long as 0.7 of clava; sutures dividing segments of clava oblique. Pronotum very short, transverse, its posterior margin strongly concave. Mesoscutum without parapsidal lines, slightly convex, wider than long (29:18). Scutellum a little shorter than mesoscutum. Wings not abbreviated: forewing 2.3Ч as long as wide; marginal vein punctiform; postmarginal vein shorter that stigmal. Mesotibial spur shorter that 1st tarsal segment (3:4), which is very long, 2.4Ч longer than 2nd. Propodeum short. Gaster shorter than mesosoma. Ovipositor sheaths not exerted. Body black, with microcellular sculpture and slight metallic luster, greenish blue on scutellum. Antennal scape and pedicel black; F1F4 brown (F4 somewhat lighter), F5F6 and clava brownish white/yellow, truncation of clava dark. Bases of tegulae white. Forewing strongly infuscate in the middle, this infuscation reaches posterior margin of the wing: basal 1/4 and apical 1/3 of wing hyaline; radix of the wing darkened. Legs dark, including mesotibial spur; 1st segment of mid tarsi brown. Body length 1.1 mm. Male unknown. HOST(s) unknown.


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V.A. Trjapitzin
(Vaccinium vitis-idaea), in a small valley of the rivulet (now only a brook) Vetelka. However, wild vegetation is still preserved there. Just a few places of that kind are left in the town of Pushkino. The valley was described in the book by Kitaygorodskiy [1997]. I collect encyrtids in the Pushkino District since 1958 and discovered five(!) species new for the science only in the valley of Vetelka. In would be desirable to establish a natural reserve there. ACKNOWLEDGEMENT. I am thankful to my friend Askar Kambarovich Akhatov for his cordial help.

ETYMOLOGY. The new species is named after agronomist Vladimir Phomich Rimsha, my classmate at the K.A. Timiryazev Agricultural Academy in Moscow in 19471952. DIAGNOSIS. E. rimshai sp.n. is similar and therefore probably related to E. niveicornis Hoffer, 1963 from Slovakia ([Hoffer, 1953] originally erroneously described as the male of E. aeneiventris Mercet, 1921 [Hoffer, 1963]). Similar female characters include transverse funicular segments of antennae and absence of parapsidal lines on mesoscutum. Differences between these species are shown in the following key: 1(2). Ocelli form an obtuse triangle. Antennal funicle and clava pure white. Pronotum as long as mesoscutum, the latter is yellowish white and finely longitudinally rugose; scutellum 3Ч as long as mesoscutum. Wings strongly abbreviated: rudiments of forewings narrow, scarcely reaching apex of scutellum. Legs very bright yellow. 0.6 mm .................................................. E. niveicornis Hoff. 2(1). Ocelli form an acute triangle with apical angle somewhat less than 60њ. F1F4 brown (F4 lighter), F5F6 and clava white yellow, truncation of clava dark. Pronotum very short; mesoscutum black with slight metallic luster and minute cellular sculpture; scutellum a little shorter than mesoscutum. Wings not abbreviated. Legs dark. 1.1 mm .............................................................. E. rimshai sp.n. Nevertheless, both macropterous individuals of E. niveicornis and brachypterous ones of E. rimshai probably exist. Proportions of thoracic sclerites in insects are usually strongly influenced by the degree of brachyptery/aptery. COMMENTS. E. rimshai was collected more than a decade ago in a pine forest (Pinus sylvestris) with cowberry

References
Hoffer A. 1953. Monograph of the Czechoslovak species of the genus Echthroplexiella Mercet. First preliminary paper for monographic investigation of the Czechoslovak Encyrtidae (Hym. Chalcidoidea) // Acta Entomologica Musei Nationalis Pragae. Vol.28 (for 1952). No.399. P.5769. Hoffer A. 1963. Descriptions of new species of the family Encyrtidae from Czhechoslovakia (Hym., Chalcidoidea). I // Acta Entomologica Musei Nationalis Pragae. Vol.35. P.549592. Kitaygorodskiy G.B. 1997. [Untravelled routes of the Pushkino District]. Moscow: Sovetskiy Sport. 139 p. [in Russian]. Trjapitzin V.A. 2006. [A review of the encyrtid-wasp genus Echthroplexiella Mercet, 1921 (Hymenoptera, Encyrtidae) of the world with description of a new species from Mexico] // Entomologicheskoye Obozreniye. Vol.85. Iss.3. P.662675 [in Russian]. Trjapitzin V.A. 2007. Redescription of Echthroplexiella irinae from Orenburg Province, Russia (Hymenoptera: Encyrtidae) // Zoosystematica Rossica. Vol.16. No.2. P.275276.