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Figure 2 in Satellite flies (Leucophora personata, Diptera: Anthomyiidae) and other dipteran parasites of the communal bee Andrena agilissima (Hymenoptera: Andrenidae) on the island of Elba, Italy

Figure 2. Seasonal activity of the parasitic flies Bombylius fimbriatus and Leucophora personata and their host bee Andrena agilissima in 1997. For the Diptera, the left ordinate gives the total number of observations, whilst for A. agilissima the right ordinate gives the number of marked bees that were observed on one day. Rainy days, when neither flies nor bees were active, are omitted.

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Figure 4 in Satellite flies (Leucophora personata, Diptera: Anthomyiidae) and other dipteran parasites of the communal bee Andrena agilissima (Hymenoptera: Andrenidae) on the island of Elba, Italy

Figure 4. The frequency of observations of the parasitic flies Leucophora personata (n511 observations) and Megaselia andrenae (n52384 observations) across a nesting aggregation of their host bee Andrena agilissima in relation to variation in the density of host nests.

Figure 6 in ''Riding'' behaviour by males of Conops quadrifasciata (Diptera: Conopidae): Do females set up ''riders'' as targets for takeovers by larger males?

Figure 6. After the successful takeover the female permits an immediate act of copulation. She would not have permitted her former rider to mate at this point.

Figure 5 in ''Riding'' behaviour by males of Conops quadrifasciata (Diptera: Conopidae): Do females set up ''riders'' as targets for takeovers by larger males?

Figure 5. The attacker has forced himself in between rider and female and is about to move backwards on to her thorax. The rider (note his considerably smaller abdomen) retreats off to one side and is about to fly off.

Figure 4 in ''Riding'' behaviour by males of Conops quadrifasciata (Diptera: Conopidae): Do females set up ''riders'' as targets for takeovers by larger males?

Figure 4. This attacking male (on left) has rammed a riding couple with such force that they were knocked off their flower on to a leaf. The female remained stationary for the several minutes needed for a successful replacement of her partner. Comparison of head-widths indicates that the attacker is considerably larger than the rider.

Figure 3. A male attacker waiting beside a in ''Riding'' behaviour by males of Conops quadrifasciata (Diptera: Conopidae): Do females set up ''riders'' as targets for takeovers by larger males?

Figure 3. A male attacker waiting beside a rider who is engaged in a repeat copulation. Both males are about the same size.

Figure 2. Despite being some 20 in ''Riding'' behaviour by males of Conops quadrifasciata (Diptera: Conopidae): Do females set up ''riders'' as targets for takeovers by larger males?

Figure 2. Despite being some 20% larger than the incumbent rider, this attacker has failed to establish genitalic contact with the female, having been thwarted by repeated abdomen lifts. 'Ramming' seems to be the only effective way of making a takeover.

Figures 22–26 in The genus Platypalpus Macquart (Diptera: Hybotidae) from Northeast Thailand with comments on the species groups in the Oriental region

Figures 22–26. Platypalpus seeluang sp. nov., male. (22) Antenna. (23) Palpus. (24) Epandrium with cerci and hypoproct. (25) Left epandrial lamella (lateral view). (26) Right epandrial lamella (lateral view). Scale bar: 0.1 mm.

Figures 15–18 in The genus Platypalpus Macquart (Diptera: Hybotidae) from Northeast Thailand with comments on the species groups in the Oriental region

Figures 15–18. Platypalpus thaicus sp. nov., male. (15) Epandrium with cerci and hypoproct. (16) Left epandrial lamella (lateral view). (17) Right epandrial lamella (lateral view). (18) Right epandrial lamella and apical part of hypoproct (dorsal view). Scale bar: 0.1 mm.

Figures 7–10 in The genus Platypalpus Macquart (Diptera: Hybotidae) from Northeast Thailand with comments on the species groups in the Oriental region

Figures 7–10. Platypalpus phomyaaw sp. nov., male. (7) Hypopygium (lateral view). (8) Epandrium with cerci and hypoproct. (9) Left epandrial lamella (lateral view). (10) Right epandrial lamella (lateral view). Scale bar: 0.5 mm (7); 0.1 mm (8–10).

Figures 4–6 in The genus Platypalpus Macquart (Diptera: Hybotidae) from Northeast Thailand with comments on the species groups in the Oriental region

Figures 4–6. Platypalpus fai sp. nov., male. (4) Epandrium with cerci and hypoproct. (5) Left epandrial lamella, left cercus, and hypoproct (lateral view). (6) Right epandrial lamella (lateral view). Scale bar: 0.1 mm.

Figures 1–3 in The genus Platypalpus Macquart (Diptera: Hybotidae) from Northeast Thailand with comments on the species groups in the Oriental region

Figures 1–3. Platypalpus nuadkhao sp. nov., male. (1) Epandrium with cerci and hypoproct. (2) Left epandrial lamella (lateral view). (3) Right epandrial lamella (lateral view). Scale bar: 0.1 mm.

Figures 19–21 in The genus Platypalpus Macquart (Diptera: Hybotidae) from Northeast Thailand with comments on the species groups in the Oriental region

Figures 19–21. Platypalpus siamensis sp. nov., male. (19) Epandrium with cerci and hypoproct. (20) Left epandrial lamella, left cercus and hypoproct (lateral view). (21) Right epandrial lamella (dorsal view). Scale bar: 0.1 mm.

Figure 7 in The early stages and breeding sites of four rare saproxylic hoverflies (Diptera: Syrphidae) from Spain

Figure 7. Typical Mallota-shaped puparium of M. dusmeti, lacking the detachable thoracic plate and the drawomitted long tail in lateral view, with head to the left. Scale bar: 4 mm.

Figures 8, 9 in The early stages and breeding sites of four rare saproxylic hoverflies (Diptera: Syrphidae) from Spain

Figures 8, 9. Head skeletons in lateral view. (8) Mallota dusmeti. (9) Myolepta difformis. Scale bar: 1.2 mm.

Figure 9 in Host-race formation in Chaetostomella cylindrica (Diptera: Tephritidae): Morphological and morphometric evidence

Figure 9. Aculeus tip showing the position of the sensory ventro-lateral groove in Chaetostomella cylindrica females from the Notobasis-associated host race (A) and the Onopordum-associated host race (B). Scale bar: 0.1 mm.

Figure 8 in Host-race formation in Chaetostomella cylindrica (Diptera: Tephritidae): Morphological and morphometric evidence

Figure 8. Typical aculeus of Chaetostomella cylindrica females from the Notobasis-associated host race (A) and the Onopordum-associated host race (probably C. lurida) (B). Scale bar: 0.5 mm.

Figure 7 in Host-race formation in Chaetostomella cylindrica (Diptera: Tephritidae): Morphological and morphometric evidence

Figure 7. Typical glans of the male distiphallus of Chaetostomella cylindrica from the Onopordum-associated race (A) and the Notobasis-associated race (B). Scale bars: 0.1 mm.

Figure 6 in Host-race formation in Chaetostomella cylindrica (Diptera: Tephritidae): Morphological and morphometric evidence

Figure 6. Scatter plots of: (A) the scores obtained for each fly using the second standardized CD function (CDF 2) as a function of the scores obtained using CDF 1; (B) for each male; and (C) for each female fly using CDF 2 as a function of the scores obtained using CDF1. Squares represent Chaetostomella cylindrica from the Onopordum host race; triangles represent flies from the Notobasis host race.

Figures 3–6 in The early stages and breeding sites of four rare saproxylic hoverflies (Diptera: Syrphidae) from Spain

Figures 3–6. Closely related Ferdinandea species posterior respiratory processes (prp) showing the tube sculpture and the spiracular plate, in dorsal and apical views, respectively. (3, 4) Ferdinandea cuprea. (5, 6) Ferdinandea fumipennis. Scale bars: 1 mm.