Fidiobia hispanica, details & authors & information & http & www.tandfonline.com & loi & tnah20, 2010

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), Journal of Natural History 44 (19 - 20), pp. 1131-1164 : 1149-1151

Fidiobia hispanica sp. nov.

( Figures 2A, B , 4B , 7B , 8B,C , 9B , 11B , 12B )

Diagnosis

OOL 2–2.2 times length of diameter of posterior ocellus; antenna 10-segmented; mesoscutum without notauli; length of metasoma 2.7–2.8 times width. T2 smooth, shiny, glabrous, with no visible sculpture, with two large depressions anterolaterally; T2 as long as wide.

Description

Female: body size: 0.8 mm. Colour: Body brown, metasoma lighter than head and mesosoma. Antenna and legs light brown. Legs with trochanters and tarsi lighter than rest of legs. Frons lighter than rest of head, with red tint.

Head transverse, width 2.4–2.6 times length, as wide as mesosoma. In frontal view, height of head 0.8 times width. Vertex and occiput with a very faint, barely perceptible imbricate sculpture. Compound eye large, glabrous. Width of eye 1.5–2 times width of temple. Eye height 1.3–1.7 times width of eye. OOL 2–2.2 times length of diameter of posterior ocellus. POL 1.6–2 times LOL. Frons without frontal depression, with a very faint sculpture, almost smooth and shiny. Gena without malar sulcus and not striate, with a similar sculpture to temple and vertex. Mandible bidentate; palpal formula unknown, but very probably 1: 1.

Antenna 10-segmented. Antenna of female: length of A1 3.5 times width and 2.5 times length of A2. Length of A2 1.8 times width and 3.7 times length of A3. Width of A3 1.3 times length and 0.9 times width of A4. Length of A3 1.5 times length of A4. A4 transverse, 2.3 times as wide as long. Length of A4 0.7 times length of A5. A5 transverse, width of A5 1.4 times length. A5 equal in length to A6 and A7. Width of A7 2 times length and 1.2 times width of A6. Length of A8 2.7 times length of A7 and 1.1 times length of A9. Width of A8 1.3 times length, 1.7 times width of A7, 0.9 times width of A9 and equal with width of A10. Length of A10 1.3 times width.

Antenna of male: length of A1 3.7 times width and 2.6 times length of A2. Length of A2 2 times width and 2.5 times length of A3. Length of A3, A4 and A6 equal. A3 transverse, 1.3 times as wide as long. Width of A3 equal to A2 and A4. A6 transverse, 1.5 times as wide as long. A8, A9 and A10 of equal width. Width of A7 1.2 times width of A6, and width of A8 1.1 times width of A7. A8 1.6 times as wide as long; A9 1.3 times as wide as long; A10 1.6 times as long as wide. Length of A10 1.6 times width and 2.2 times length of A9.

Length of mesosoma 1.1–1.3 times width; its width 1.6 times height. Pronotum weakly developed, hardly visible in dorsal view. Mesoscutum in anterolateral part imbricate, sculptured as the head; in posteromedian part the sculpture is faint and the surface is almost smooth, shiny; disc 2.7 times as long as scutellum. Notauli absent. Width of scutellum 2.7 times length, strongly flattened, with hardly visible lateral keels, smooth and shiny.

Length of forewing 3.4 times width, 1.2 times length of hindwing, 2.9 times width of mesosoma. Forewings with submarginal vein ending in rounded knob. Length of forewings 3.6 times length of submarginal vein. Width of forewing 6.5 times length of marginal fringe at its longest.

Hindwing 6.5 times as long as wide, with two hamuli. Width of hindwing 3.1 times of marginal fringe at its longest.

Metascutellum weakly defined, hardly visible in dorsal view. Propodeum medially with two short parallel keels, covered on the sides with short, silvery pilosity. Pronotal groove deep, glabrous.

Metasoma in female: length 2–2.2 times length of mesosoma, 2.7–2.8 times width; composed of six externally visible tergites. Some of the last four terga may be telescoped under large T2.

T1 convex, with distinct medial prominence, shiny, width of T1 3.6–5 times length. At the sides of medial prominence two depressions are visible. Ratio between maximum and minimum width of T1 1.5–1.7.

T2 smooth, shiny, glabrous, with no visible sculpture, with two large depressions anterolaterally; T2 as long as wide; length of T2 4.8–5 times length of T1 and 2.4 times length of T3. Ratio between maximum and minimum width of T2 is 1.2–1.3. Ratio between length of T3 and length of T4 is 1–1.3. Ratio between maximum and minimum width of T3 is 1.1 and between maximum and minimum width of T4 is 1.1–1.3. T6 triangular, 1.3–1.5 times as long as T5.

In male: length of metasoma 2.4 times width. Width of T1 3.7 times length. Ratio between maximum and minimum width of T1 is 1.8. T2 almost as long as wide; length of T2 4.5 times as length of T1 and 2.6 times length of T3. Ratio between maximum and minimum width of T2 is 1.3. Ratio between length of T3 and length of T4 is 1.2. T6, triangular, half the length of T5.

Hosts

Andricus lignicola (Hartig) ( Hymenoptera : Cynipidae ) on Quercus (misidentification as F. synergorum in O’Connor et al. 2004).

Distribution

Palaearctic: Spain, Ireland.

Material examined

Spain: Holotype female no. 2665; UTM 30TYL2794, on coloured plates, 9 February 1991; Paratypes: one female UTM 30TYL2896, on coloured plates, 20 February 1991; two females no. 2758 (female with ovipositor extruded) UTM 30TYL2894, on coloured plates, 9 March 1991; one female UTM 30TYL2794, Moericke trap, 25 March 1991; one male no. 2901, UTM 30TYL2695, on coloured plates, 9 April 1991, Zaragoza, Pina de Ebro, Pine/Juniper forest, leg. J. Blasco-Zumeta, under the labels with a microslide with antenna, fore- and hindwings. Ireland: two females Wicklow, Powerscourt Waterfall, emerged 19 April 1993 from cola nut galls of Andricus lignicola (Hartig) collected from Quercus on 15 February 1993, leg. J.P. O’Connor.

Holotype female and four paratypes (three female, one male) deposited in ZMUC; one paratype female deposited in OPPC, two paratype females in NMID.

Etymology

The name refers to Spain, where the holotype was collected. Remarks

The 10-segmented antennae suggest a relationship to F. gordoni , and make these two species distinct with regard to the rest of the described species of Fidiobia . Fidiobia hispanica differs from F. gordoni by the following characters: mesoscutum without notauli; distance between compound eye and posterior ocellus; sculpture of body etc. Habitus, depressed body, sculpture of body and shape of metasoma place F. hispanica very close to F. synergorum . Differences between these two species can be seen in Figure 3 . The principal differences between females of these two species appear in the structure of antenna (10- segmented in F. hispanica and nine-segmented in F. synergorum ) and in the ratio between width and height of mesosoma (1.6 in F. hispanica and 2.7 in F. synergorum ). Males of these species are very distinct because of the structure of the antenna and structure of the metasoma. Fidiobia hispanica was recorded as F. synergorum by Buhl (1999a) and by O’Connor et al. (2004).

Figures

Figure 2. (A) Ovipositor system in Fidiobia hispanica; (B) ovipositor assembly in F. hispanica; (C) ovipositor assembly in Fidiobia rugosifrons; scale bars 0.1 mm.

Figure 3. Maxillo-labial complex of Fidiobia gordoni; scale bar 0.1 mm.

Figure 4. Habitus in (A) Fidiobia gordoni; (B) Fidiobia hispanica, scale bars 0.1 mm.

Figure 7. (A) Habitus in Fidiobia hofferi; (B) metasoma in Fidiobia hispanica male; (C) metasoma in Fidiobia synergorum male, scale bars 0.1 mm.

Figure 8. Antenna: (A) Fidiobia gordoni female; (B) Fidiobia hispanica female; (C) F. hispanica male; (D) Fidiobia synergorum female; (E) F. synergorum female, teratological case; (F) F. synergorum male; (G) Fidiobia polita female; (H) Fidiobia pronotata female; (I) Fidiobia rugosifrons female; (J) F. rugosifrons male; (K) Fidiobia hofferi female, scale bars 0.1 mm.

Figure 9. Forewing: (A) Fidiobia gordoni; (B) Fidiobia hispanica; (C) Fidiobia synergorum female; (D) F. synergorum male, scale bars 0.1 mm.

Figure 11. Veins of forewing – detail: (A) Fidiobia gordoni; (B) Fidiobia hispanica; (C) Fidiobia synergorum; (D) Fidiobia polita; (E) Fidiobia rugosifrons; (F) Fidiobia hofferi, scale bars 0.1 mm.

Figure 12. Hindwing in: (A) Fidiobia gordoni; (B) Fidiobia hispanica; (C) Fidiobia synergorum female; (D) F. synergorum male; (E) Fidiobia polita; (F) Fidiobia rugosifrons; (G) Fidiobia hofferi, scale bars 0.1 mm.