Aleyrodidae, Westwood, 1840

Aleyrodidae View in CoL gen. et sp. indet. 3

Fig. 9B View Fig .

Material.— Specimen NHMD 38973 [alternative ZMUC 902146 View Materials ], Danish amber; western coast of Denmark; Lutetian–Priabonian , Eocene , collected by C. V. Henningsen , 20.3.1975, deposited in Amber Collection in Natural History Museum of Denmark. Imago of whitefly is included in moderate sized piece of amber (22× 18 mm) of irregular shape. The piece of amber has an extremely dark colour, and the part of amber near the inclusions is strongly cracked, which made observation difficult .

Description.—Measurements: Table 1. Head from the lateral side visible ( Fig. 9B View Fig 3 View Fig ). Compound eyes large, not bulging ( Fig. 9B View Fig 3 View Fig ), ommatidia relatively small and equal in size. Lateral ocelli large, located above the compound eyes ( Fig. 9B View Fig 3 View Fig ). Antennae completely invisible.

Left fore wing folded in half, the right fore wing crumpled and a crack in the amber structure passes through the centre ( Fig. 9B View Fig 1 View Fig , B 3 View Fig , B 4 View Fig ). Fore wing widening apicad, the widest in about 3/4 of the length, about 2.5 times as long as wide. Costal vein arched, anteroapical angle and posteroapical angle arcuate, apical margin arched, posterior margin rounded basally, further invisible due to this part of wing crumpled. Common stem Sc+R+CuA short and thick. Stem Sc+R appears arcuate (however, a cut of the wing surface may have contributed to the displacement of the use), directed towards the anteroapical angle and forked in the middle of the length of the wing. Branch R1 arcuate, not reaching the margin. Branch Rs straight, about 2.2 times longer than the branch R1, not reaching margin. Vein CuA visible only in a small, basal part, comes away the common branch Sc+R+CuA at an acute angle. Claval vein CuP straight, ending invisible. Hind wing widening apicad, widest in about 2/3 of the length, about 2.4 times as long as wide ( Fig. 9B View Fig 2 View Fig , B 3 View Fig , B 5 View Fig ). Costal vein arched, anteroapical angle slightly arched, apical margin and posteroapical angle invisible due to a crack in amber passing through the tip of the wing. Posterior margin basally invisible, further straight. Stem Sc+R relatively straight, reaching apical part of the wing, stem end invisible. Legs invisible, except from part of tibia and tarsi one of the indeterminate legs ( Fig. 9B View Fig 3 View Fig ). Thorax invisible ( Fig. 9B View Fig 3 View Fig ). The abdomen is visible fragmentarily, in the form of small part of several segments between the wings. Gender cannot be determined ( Fig. 9B View Fig 3 View Fig ).

Aleyrodidae gen. et sp. indet. 4

Fig. 10 View Fig .

Material.— Specimen female, NHMD 38963 [alternative ZMUC 902136 View Materials ], Danish amber; western coast of Denmark; Lutetian–Priabonian , Eocene , collected by C. V. Henningsen , 19.6.1964, deposited in Amber Collection in Natural History Museum of Denmark. Imago of whitefly is included in clear brownish and small sized piece of amber (6×5× 2 mm) of flat cube shape .

Description.—Measurements: Table 1. The head from the dorsal side invisible ( Fig. 10A View Fig 5 View Fig ), from the ventral side only a small part of the compound eye and the antennae are visible ( Fig. 10A View Fig 4 View Fig , A 8 View Fig ). The lack of proper focus and the presence of mold and distortion did not allow to description of the length of separate antennomeres ( Fig. 10A View Fig 8 View Fig ). Pedicel is relatively large, twice as long as wide, the last antennomere distinctly tapering toward apex.

Thorax from the dorsal side invisible, covered by wings and numerous small cracks in amber ( Fig. 10A View Fig 5 View Fig ). Wings covered with impurities limiting visibility ( Fig. 10A View Fig 4 View Fig , A 5 View Fig , A 7 View Fig ). The base of fore wings invisible ( Fig. 10A View Fig 1 View Fig , A 4 View Fig , A 5 View Fig , A 7 View Fig ). The fore wing widening apicad, at least 1.9 times as long as wide, the widest in about 3/4 of the length. Visible part of the anterior margin arcuate, anteroapical angle rounded, apical margin rounded too, posteroapical angle arched, visible posterior margin arcuated further straight. Common stem Sc+R+CuA thick. Branch Sc+R straight, directed towards the anteroapical angle. Branch R1 and the end of branch Rs invisible. Vein CuA straight with invisible ending. Claval vein CuP thin and straight with invisible ending. Hind wing narrow at the base, gradually widening apicad, 2.8 times as long as wide, the widest in about 3/4 of its length ( Fig. 10A View Fig 2 View Fig , A 4 View Fig , A 5 View Fig , A 6 View Fig ). Costal vein slightly arched at the base, further almost straight, anteroapical angle arcuate, apical margin arched, posteroapical angle arched, posterior margin arched, too. Branch Sc+R long and almost straight, in distal part slightly curved towards the anteroapical angle, not reaching margin of the wing.

Prolegs the shortest, metalegs the longest ( Fig. 10A View Fig 3 View Fig , A 4 View Fig , A 9 View Fig ). Coxa elongated, trochanters poorly marked. Metatibia 1.4 times longer than metafemur. Metatibia and basimetatarsomere with small, short seta ( Fig. 10A View Fig 3 View Fig , A 4 View Fig , A 9 View Fig , A 10 View Fig ). Single, several times longer seta on the apical part of tibia. Metatarsus two-segmented, with basimetatarsomere 1.3 times longer than apical metatarsomere. The total length of metatarsus the same as length of metafemur. Paronychium and claws invisible.

Abdomen from the dorsal side invisible ( Fig. 10A View Fig 5 View Fig ). Ventral side of abdomen oval shape, similar in length to the head and thorax ( Fig. 10A View Fig 4 View Fig , A 10 View Fig ). Four pairs of wax plates visible, of similar size and regular shape, slightly wider than their length ( Fig. 10A View Fig 4 View Fig , A 10 View Fig ). Gender cannot be determined, probably female due to the characteristic triangular shape the apical part of the abdomen (visible from the lateral side) and lack of claspers and aedeagus ( Fig. 10A View Fig 4 View Fig , A 10 View Fig ).