Fidiobia rugosifrons : Crawford 1916
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Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Platygastridae
Fidiobia
Fidiobia rugosifrons

description: Fidiobia rugosifrons Crawford, 1916   
(Figures 2C, 6B, 8I,J, 10C, 11E, 12F)  
 Fidiobia rugosifrons: Crawford, 1916: 141; Fouts, 1924: 8; Kieffer, 1926: 700, 701; Masner and Muesebeck, 1968: 76; Fabritius, 1974: 294; Kozlov, 1978: 656; Buhl, 1999: 18; Evans and Peña, 2005: 62.   
 Fidiobia tatrae: Szelényi, 1941: 167; Jansson, 1956: 89; Szabó, 1958: 462.   
 Rosneta phryne: Debauche, 1947: 280; Jansson, 1956: 88.   
 Fidiobia phryne: Ghesquière, 1948: 45.   
 Diagnosis   
 Antenna nine-segmented; OOL 0.5–1 (0.86 ± 0.19, n = 24) as long as diameter of posterior ocellus; pronotum hardly visible in dorsal view; mesoscutum with areolate– rugulose sculpture; notauli incomplete, abbreviate anteriorly, gradually dilated posteriorly; T2 smooth, shiny, glabrous, without visible sculpture, with two large depressions anterolaterally; length of T2 1–1.3 times (1.15 ± 0.08, n = 24) width.   
 Description   
 Female: body size: 0.7–1.0 (0.8 ± 0.07, n = 24) mm. Colour: body black; lateral side of first metasomal tergite with brown tint. Antenna: A1–A6 yellow; A7–A9 dark brown. Vein of forewings brown. Legs including coxae yellow.   
 Head transverse, width 2–2.75 (2.2 ± 0.18, n = 24) times length, 0.94–1.1 (1 ± 0.04, n = 24) times width of mesosoma. In frontal view, height of head 1.2 times width. Vertex and occiput areolate–rugulose. Temple sculptured as the vertex. Compound eye large, glabrous. Width of eye 1.6–3.5 (2.4 ± 0.44, n = 24) times width of temple. Eye height 1–1.6 (1.2 ± 0.13, n = 24) times width of eye. OOL 0.5–1 (0.86 ± 0.19, n = 24) times length of diameter of posterior ocellus. POL 1.6–2 (1.8 ± 0.12, n = 24) times LOL. Frons without frontal depression, sculptured as the vertex and temple. Gena without malar sulcus and not striate, sculptured as temple. Mandible bidentate; palpal formula 1: 1.   
Antenna nine-segmented in both sexes.  
Antenna in females: length of A1 3.2 times width and 3.8 times length of A2. Length of A2 1.5 times width and 2.2 times length of A3. Width of A3 1.2 times length and equal to width of A4. Length of A3 1.25 times length of A4. A4 transverse, its width 1.5 times length. A5 shortest, transverse, twice as wide as long. A6 as long as A4, its length 1.3 times length of A5, transverse, twice as wide as long. Width of A7 1.4 times length, 1.8 times of A6 and 0.9 times width of A8. Width of A8 1.7 times length and similar to width of A9. Length of A9 1.4 times width and 1.7 times length of A8.  
Antenna of male: length of A1 2.8 times width and 3.7 times length of A2. Length of A2 1.3 times width and 1.1 times length of A3. Length of A3 1.1 times width and 2.2 times length of A4. Width of A3 1.3 times width of A4. A4 transverse, 1.5 times as wide as long. A5 as long and as wide as A4. Width of A6 1.6 times length. Width of A7 1.5 times length and 1.5 times width of A6. Length of A7 1.6 times length of A6 and 1.1 times length of A8. Width of A8 1.9 times length. Length of A9 1.3 times width and 1.2 times length of A8.  
 Mesosoma: length 1–1.2 (1 ± 0.05, n = 24) times width; width 1.4 times height. Pronotum small; mesoscutum with areolate–rugulose sculpture, as that of the head, 1.6–2.6 (2 ± 0.2, n = 24) times longer than scutellum. Notauli incomplete, abbreviate anteriorly, gradually dilated posteriorly. Width of scutellum 2–3.2 (2.4 ± 0.2) times length, strongly flattened, with strong lateral keels, smooth and shiny.   
 Length of forewing 2.5–3 (2.7 ± 0.1, n = 24) times width, 1.2 times length of hindwing, 2.4–3 (2.9 ± 0.1) times width of mesosoma, surpassing apex of metasoma. Forewings with submarginal vein ending in rounded knob. Length of forewings 7.7 times length of submarginal vein.   
Hindwing 4.5 times as long as wide, with two hamuli. Width of hindwing 3.6 times length of marginal fringe at its longest.  
Metascutellum weakly defined, hardly visible in dorsal view. Propodeum medially with two short parallel keels, covered with a short, silvery pilosity.  
Pronotal groove glabrous; side of pronotum sculptured as mesoscutum, glabrous. Mesopleuron with shallow, smooth and shiny mesopleural depression. In some specimens this depression is reduced. In upper part, below tegula, with parallel ridges (in one specimen these ridges are missing). Sternaulus sculptured as side of pronotum.  
Metapleuron covered with thick, short, silvery setae, except a small triangular area in anteromedian part near posterior part of mesopleuron. In some specimens the metapleuron is completely covered with setae.  
 Metasoma: length 1.3–1.7 (1.5 ± 0.1, n = 24) times length of mesosoma, 1.4–1.8 (1.6 ± 0.1, n = 24) times width; composed of six externally visible tergites. Some of the last four terga may be telescoped under the large T2.   
 T1 convex, with distinct medial prominence with few, delicate, longitudinal costae, width 2.1–3.2 (2.5 ± 0.2, n = 24) times length, laterally of medial prominence with two depressions. Ratio between maximum and minimum width of T1 1.7–2.4 (1.9 ± 0.18, n = 24).   
 T2 smooth, shiny, glabrous, without visible sculpture, with two large depressions anterolaterally; length of T2, 3–5 (3.79 ± 0.4, n = 24) times length of T1 and 1–1.3 (1.15 ± 0.08, n = 24) its own width. Ratio between maximum and minimum width of T2 1.17–1.4 (1.3 ± 0.05, n = 24).   
 Hosts   
 Hypera punctata (F) (Coleoptera: Curculionidae) on Triticum sp. (Vlug 1995).   
 Distribution   
Sweden, Norway (Buhl 1999); Romania (Fabritius 1974); Moldavia; Central Altai; Kazakhstan; Central Asia (Kozlov 1978); Spain (Buhl 2000), Mongolia (Buhl 2004); Canada (Evans and Peña 2005); USA: Indianapolis (Evans and Peña 2005), Pennsylvania (Crawford 1916; Fouts 1924); Panama (Evans and Peña 2005).  
 Material examined   
 Romania: one female 8 July 2008 Bârnova, (46°59′37.0′′ N, 27°35′27.1′′ E) (leg. M. Popovici), (sweep net); one female 26 June 2006 Ciric (47°14′35.99′′ N, 27°34′45.37′′ E) (leg. O. Popovici), (sweep net); one male 1 May 2005 Roma (47°50′11.84′′ N, 26°34′50.81′′ E) (sweep net), (leg. M. Popovici); one female 24 July 2004 Todirescu, (leg. O. Popovici and L. Fusu), (sweep net); one female 21 June 2005 Botanical Garden, Iasi (47°11′09.61′′ N; 27°33′04.31′′ E) (leg. O. Popovici), (sweep net); one female 10 August 2004 M a cin Mountains (sweep net), (leg. M. Mitroiu); one female 30 June 2002 Breazu, Iasi (sweep net), (leg. O. Popovici); Slovakia: eight females 12 August 1955, Stinka (leg. L. Masner); one female June1956, Zadiel (leg. L. Masner); Czech Republic: two females 16 May 1954 Revnice, Bohemia (leg. L. Masner); one female 9 June 1957, Moravia mev. Cei 0, (leg. Kocouvek); one female September 1944 Bohemia, W. Harmbach (leg. Hoffer); three females C SR. Boh. Šumava, H 8 rka v Pošumavi (leg. Hoffer); nine females July 1955 Boh. Hradec Kr. (leg. Bou C ek); five females Malá Skála Bohemia (leg. Obenberger); Norway: two females May 1993 BØ: Underlia, (Malaise Trap), (leg. L.O. Hansen).   
 Remarks   
 Fidiobia rugosifrons is the only species of the genus with Holarctic distribution. It is the most common European species of Fidiobia, but is rare in general. It is a very distinct species. The shape of T1 makes this species similar to F. pronotata, but the structure of the mesosoma is completely different in these two species. It differs from F. hofferi in dimensions; sculpture; position of posterior ocellus; shape of T1.
description: Published as part of details, Publication, authors, including instructions for, information, subscription, http, www. tandfonline. com, loi & tnah 20, 2010, The West Palaearctic species of Fidiobia Ashmead, 1894 (Hymenoptera: Platygastroidea), pp. 1131-1164 in Journal of Natural History 44 (19 - 20) on pages 1157-1159, DOI: 10.1080/00222931003632740, http://zenodo.org/record/5209151