Oecophylla longiceps Dlussky, 2008

Dlussky, Gennady M., Wappler, Torsten & Wedmann, Sonja, 2008, New middle Eocene formicid species from Germany and the evolution of weaver ants, Acta Palaeontologica Polonica 53 (4), pp. 615-626 : 617-619

publication ID

https://doi.org/ 10.4202/app.2008.0406

persistent identifier

https://treatment.plazi.org/id/03AA87C9-FFAC-FF99-7407-FB27FE93FA5C

treatment provided by

Felipe

scientific name

Oecophylla longiceps Dlussky
status

sp. nov.

Oecophylla longiceps Dlussky sp. nov.

Figs. 2 View Fig , 3 View Fig , 6A View Fig .

Etymology: Longiceps from the Latin “having a long head”.

Type material: Holotype:Mel 3643 (♀). Paratypes:Mel 890 (♀), Mel 6220 (♀), Mel 6441 (♀), Mel 6803 (♀), Mel 7636 (♂). Other specimens: Mel 56, MeI 468, MeI 923, MeI 953, MeI 2404, MeI 3276, MeI 3344, MeI 3928, MeI 5889, MeI 6174, MeI 6282, MeI 6371, MeI 6585, MeI 6988, MeI 7165, MeI 7638, MeI 7654, MeI 8016, MeI 8657, MeI 8742, MeI 11113, MeI 11492, MeI 11661, MeI 12686, MeI 12686, MeI 12939 (♀♀);MeI 4997, MeI 5393, MeI 7865, MeI 10461, MeI 11073 (♂♂) (all FIS).

Type locality: Grube Messel , Hesse, Germany .

Type horizon: Messel Formation, middle Eocene, ca. 47 Ma ( Mertz and Renne 2005).

Diagnosis.—Gynes of O. longiceps differ from gynes of other known species of the genus by their elongate head: the head is 1.2 times as long as wide, whereas in other species the head is as long as wide or wider than long.

Description.—Gyne. BL 12–16 mm, AL 4–5 mm, FWL 10–14 mm. Head longer than wide, narrower at its base than apically, with feebly convex sides and rounded occipital margin. Anterior margin of clypeus rounded. Eyes comparatively small, oval, situated slightly ahead midlength of head; maximum eye diameter about one−fifth of head length. Mandibles large, triangular, with large sharp apical tooth. Antennae geniculate. Scape attached at some distance from clypeus, protrudes beyond the occipital margin of the head, about 1.2 times as long as head. Joints of funiculus about twice as long than thick. Alitrunk a little wider than head. Scutum in side view feebly convex above and rounded anteriorly, not over−hanging pronotum in dorsal view. Propodeum feebly convex in side view. Legs rather short and thick. Petiole without scale or node, narrowed anteriorly and posteriorly, a little longer than wide and high. Gaster oval.

Wing venation typical for Oecophylla . Forewing with closed cells 1+2r, 3r, with no closed rm and mcu. Pterostigma narrow. Usually sections 5RS and 4M with joint start (rs−m lost). Cell 3r comparatively narrow, 5RS bent into 3r. 1RS and 1M form united transverse vein; 1M shorter than 1RS. 1RS inclined, forming acute angle with R; 2r−rs inclined. Section RS+M (delimiting cell 1+2r from below) bent. 3Cu convex. Hind wing with two longitudinal veins 2RS and Cu. 1RS distinct, short. Section rs−cu concave, much longer than 2M+Cu. Crossvein cu−a about as long as 2M+Cu.

Male.—BL 6–7 mm, AL about 3 mm, FWL about 6 mm. Head comparatively small, considerably narrower than alitrunk, a little wider than long. Eyes convex. Alitrunk less than twice longer than high. Legs rather long and thin. Petiole without scale or node, narrowed anteriorly, a little longer than wide. Gaster oviform. In some places on the perimeter of the paratype numerous outstanding hairs are visible, so evidently in the living specimen the complete body was coated with numerous hairs. Wing venation as in gyne.

Worker.—Unknown.

Dimensions (mm).—MeI 3643 (♀, holotype): AL = 4.5, HL = 2,3, HW = 1.9, SL = 2.7, PtL = 1.05, PtW = 0.82, FWL = 10.9; MeI MeI 890 (♀, paratype): AL = 5.0, HL = 2.5, ED = 0.57, SL = 2.6, PtL = 0.94, FWL = 10.3; MeI MeI 6220 (♀, paratype); AL = 4.0, HL = 2.2, HW = 1.8, SL = 2.6, PtL = 0.94, PtW = 0.90, FWL = 11.6; MeI MeI 6803 (♀, paratype): AL = 4.45, HL = 2.6, FWL = 11.6; MeI 7636 (♂, paratype): BL = 6.1, AL = 2.9, HL = 0.95, HW = 1.05, PtL = 0.35, PtW = 0.29; FWL = 5.8.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hymenoptera

Family

Formicidae

Genus

Oecophylla

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