Genus Vol. 16(3): 431-444 Wroc³aw, 15 IX 2005 On the systematic and distribution of three rare alysiine genera (Hymenoptera: Braconidae: Alysiinae) SERGEY A. BELOKOBYLSKIJ Museum and Institute of Zoology, Polish Academy of Sciences, Wilcza 64, 00-679 Warsaw, Poland. E-mail: [email protected] ABSTRACT. The Alysiinae genera Asyntactus MARSHALL [with A. sigalphoides MARSHALL], Carinthilota FISCHER [with C. vehti ACHTERBERG] and Epimicta FOERSTER [with Epimicta marginalis (HALIDAY)] are recorded for the first time for the fauna of Poland. Redescriptions and figures of these genera and species are given. The keys to the Palaearctic species of the genera Carinthilota and Epimicta are provided. Key words: entomology, taxonomy, Hymenoptera, Braconidae, Alysiinae, Asyntactus, Carinthilota, Epimicta, redescriptions, new records, Poland. INTRODUCTION The subfamily Alysiinae is one of the most peculiar and diversified sub- families of the endoparasitoids of the family Braconidae. The species of this subfamily parasitize the larvae of several families of Diptera (more common Agromyzidae, Phoridae, Ephydridae, Chloropidae, Calliphoridae, Anthomyiidae etc.) and finish their development in the puparium of flies. More than 80 genera have been described and most of these are restricted to temperate areas of the Holarctic Region (FISCHER 1971; SHENEFELT 1974; WHARTON 1980; BELOKOBYLSKIJ 1998; TOBIAS 1998). About 65 genera were recorded in the Palaearctic fauna including 55 genera of the fauna of Europe. Genera and species which were recorded from Poland (34 genera and 228 species) are from the both known alysiine tribes (HUFLEJT 1997; BELOKOBYLSKIJ 2004), but this number does not show the true diversity of the Polish alysiine fauna. Three genera from tribes Alysiini (Asyntactus MARSHALL, 1892 and 432 SERGEY A. BELOKOBYLSKIJ Carinthilota FISCHER, 1975) and Dacnusini (Epimicta FOERSTER, 1862) are re- corded in this paper as new for the fauna of Poland. The redescriptions of these genera and three species with discussion about distribution and contents of these groups are presented below. The terminology for wing venation follows that of BELOKOBYLSKIJ & TOBIAS (1998). SYSTEMATICS PART Asyntactus MARSHALL, 1898 Type species – Asyntactus rhogaleus MARSHALL, 1898. The presence of different types of sculptures on metasomal tergites behind the first one is one of the main diagnostic characters for several alysiine genera. This character is known in such Holarctic genera as Apronope ACHTERBERG, Asyntactus MARSHALL, Bobekia NIEZABITOWSKI, Glyphogaster MUESEBECK et WALKLEY, Hylcalosia FISCHER, Oenonogastra ASHMEAD, Phasmalysia TOBIAS, Phasmidiasta WHARTON, Separatatus CHEN et WU, Symphanes FOERSTER, Trachyusa RUTHE (Alysiini), Aristelix NIXON, Coelinius NEES, Eucoelinidea TOBIAS, Epimicta FOERSTER, Laotris NIXON, Orientelix TOBIAS, Parasymphia TOBIAS, Polemochartus SCHULZ, Sarops NIXON, Synelix FOERSTER, and Trachionus HALIDAY (Dacnusini). Asyntactus MARSHALL is one of the most rare alysiine genera which has more than 3 sculptured basal tergites on dorsoventrally depressed metasoma (MARSHALL 1892; FISCHER 1971). Only two West Palaearctic species are described in this genus - A. rhogaleus MARSHALL and A. sigalphoides MARSHALL. The hosts of this genus are yet unknown. Description. Head transverse. Temple longer than transverse diameter of eye. Ocelli arranged in triangle with base longer than its sides. Vertex with distinct narrow median longitudinal furrow; frons with rather wide longitudinal furrow. Eyes glabrous. Clypeus wide. Tentorial pits small. Mandible wide and thick, with 3 teeth; upper tooth small and pointed, median tooth largest, wide, strongly narrowed apically; lower tooth small (almost same length as upper tooth), pointed apically, curved down. Antennae rather thick, weakly setiform, rather long. First flagellar segment distinctly longer than second segment. Most part of flagellar segments transverse or subsquare. Apical segment pointed apically. Mesosoma 1.5 times as long as high. Pronotum with distinct small pronope. Propleura distinctly convex submedially. Mesonotum highly and almost perpen- dicularly raised above pronotum, with distinct median longitudinal depression in posterior half. Notauli deep and crenulate in anterior 1/3, very shallow submedi- ally, almost absent in posterior 1/3. Prescutellar depression long, coarsely crenulate, without median carina. Metanotum with rather short, thick and pointed tooth. Sternauli wide, rather deep, coarsely sculptured. Metapleural flange short and SYSTEMATIC AND DISTRIBUTION OF THREE RARE ALYSIINE GENERA 433 rather narrow. Propodeum without delineated areas and without tubercles, en- tirely coarsely and densely rugose-reticulate; spiracles very small. Pterostigma short and wide. Radial cell of fore wing weakly shortened; metacarpus 1.2 times as long as rather small pterostigma. Radial vein arising distinctly behind middle of pterostigma. Second radial abscissa distinctly shorter than first radiomedial vein. Both radiomedial veins present. Recurrent vein dis- tinctly postfurcal. Discoidal cell anteriorly petiolate. Nervulus postfurcal. Paral- lel vein arising almost from middle of apical side of brachial cell. Brachial cell widely open. In hind wing, first abscissa of mediocubital vein 3.0-3.3 times as long as second abscissa; submedial cell large. Recurrent vein absent. Legs. Hind coxa without basoventral tubercle. Hind femur slender, elongate- oval. Basitarsus of hind tarsus short, 0.6 times as long as second-fifth segments combined. Claw simple. Metasoma distinctly widened from base toward fourth tergite; distal segments shortly protruding behind fourth tergite. First tergite wide, weakly widened to- wards apex, without dorsope, with dorsal carinae distinct and angulately fused in basal 1/5. Second suture rather deep and crenulate. Second-fifth tergites with separated laterotergites. First-third tergites entirely densely undulately striate with dense rugulosity and granulation between striae. Fourth tergite almost en- tirely finely and densely rugulose-granulate. Remaining tergites smooth. Mesosoma entirely covered with dense short white setae. Distribution. Western Palaearctic Region. Asyntactus sigalphoides MARSHALL, 1898 (Figs 1-9) Asyntactus sigalphoides MARSHALL, 1898: 241; FISCHER 1971: 74; SHENEFELT 1974: 982; TOBIAS 1986: 157. Material. Poland, Puszcza Sandomierska: 1 male, “PL EA96, Ndl. Le¿ajsk, L. Zmyslowka, o. 83, leg nad rzeczka, Leszczynka, 4.05.2001, leg T. Huflejt”, “Mus. Zool. Polonicum, Warszawa, 2/2001”. Description. Male. Body length 5.0 mm; fore wing length 4.0 mm. Head twice as wide as median length, 1.6 times as wide as maximum length, 1.4 times as wide as mesoscutum. Head behind eyes (dorsal view) regularly widened, roundly narrowed in posterior 1/3. Temple 1.2 times as long as transverse diameter of eye (1.5 times if measured on the straight line). POL 1.6 times Od, about half OOL. Eyes 1.25 times as high as broad. Face width 1.5 times height of eye, 2.5 times median height of face. Width of clypeus 2.5 times its median width, 0.7 times width of face. Mandible weakly narrowed towards apex, its median length twice distal width. Submedian mandibular keel distinct, complete, strongly curved towards apex of lower tooth. Antennae 59-segmented, 1.2 times as long as body. Scapus about 1.5 times as long as maximum width. First flagellar segment 2.5 times as long as apical width, 434 SERGEY A. BELOKOBYLSKIJ 1-9. Asyntactus sigalphoides MARSHALL: 1 - head, front view, 2 - head, dorsal view, 3 – mandible, 4 - basal segments of antenna, 5 - mesosoma, 6 - metasoma, 7 - hind femur, 8 - fore wing, 9 - hind wing SYSTEMATIC AND DISTRIBUTION OF THREE RARE ALYSIINE GENERA 435 1.7 times as long as second segment. Penultimate segment 1.7 times as long as wide, 0.4 times as long as first flagellar segment, 0.8 times as long as apical segment. Mesosoma. Mesoscutum 0.9 times as long as maximum width. Prescutellar depression deep, about 0.4 times as long as the weakly convex scutellum. Metanotum with distinct median longitudinal carina. Subalar depression shallow, wide, coarsely rugose-striate. Wings. Fore wing 2.6 times as long as wide. Metacarpus 4.7 times as long as distance from apex of radial cell to apex of wing. Second radial abscissa 4.0 times as long as first abscissa, 0.35 times as long as third abscissa, 0.75 times as long as first radiomedial vein. Second radiomedial cell twice as long as wide, 1.5 times as long as brachial cell. Submedial cell weakly roundly widened toward apex. Distance between basal vein and nervulus half nervulus length. Hind wing almost 4.0 times as long as wide. First costal abscissa 0.6 times as long as second abscissa. Legs. Hind femur almost 4.0 times as long as wide. Hind tarsus as long as hind tibia. Second tarsal segment about half as long as basitarsus, 1.4 times as long as fifth segment (without pretarsus). Metasoma twice as long as its maximum width, weakly shorter than head and mesosoma combined. First tergite rather distinctly and weakly-roundly widened from base to apex, its length almost equal to apical width; apical width about twice its basal width. Median length of second tergite 0.9 times its basal width, 1.35 times length of third tergite. Fourth tergite 0.7 times as long as third tergite. Sculpture. Vertex and the most part of frons smooth, frons weakly rugulose- striate anteriorly and laterally, with narrow shallow sculptured median furow. Face and clypeus rather densely and distinctly rugose-punctulate. Mesoscutum rugulose-punctulate with