Odontacolus longiceps Kieffer

A. Valerio, Alejandro, Austin, Andrew D., Masner, Lubomir & Johnson, Norman F., 2013, Systematics of Old World Odontacolus Kieffer s. l. (Hymenoptera, Platygastridae s. l.): parasitoids of spider eggs, ZooKeys 314, pp. 1-151 : 48-49

Odontacolus longiceps Kieffer Figures 44, 203-208; Morphbank 73

Odontacolus longiceps Kieffer 1910a: 294 (original description); Kieffer 1912a: 54 (redescribed as new); Kieffer 1926: 145 (description, keyed); Masner 1965: 85 (type information).

Description.

Female. Body length: 1.29 mm (n=1). Antenna color: A1 yellow, otherwise dark brown. Body color: mostly dark brown, head and dorsal mesosoma darker than remainder of body, T1 and anterior margin of T2 yellow. Coxae color: yellow. Leg color (excluding coxae): yellow. Fore wing color: slightly infuscate throughout.

Head. Size of compound eye: approximately 1/2 × height of head. Head shape in lateral view: lower head elongate and broad at mouth, head appearing elongate and somewhat thin. Sculpture of antennal scrobe: smooth throughout. Surface of torular triangle: flat. Development of central keel on frons: completely absent. Sculpture on upper frons below anterior ocellus: granulose throughout. Sculpture of malar space: granulose throughout, without fan-like striae. Furrow at lateral portion of antennal scrobe: absent. Mesal surface of vertex: flat to weakly convex. Size of lateral ocelli: normal. Distance between lateral ocellus and occipital carina: 0.5 –1.2× maximum ocellar diameter. Lagrimal: absent or minute. Length of OOL: less than or equal to 1/3 × width of ocellus. Sculpture of vertex: granulate. Sculpture of occipital carina: largely simple, at most with sparse weak crenulae medially. Distance from occipital carina to orbital carina: at least 2 × width of occipital carina. Shape of occipital carina: simply arcuate medially. Sculpture of occiput: with weak, small granulae. Sculpture of gena: granulose.

Mesosoma. Dorsal mesosoma in lateral view: convex. Sculpture of pronotal lateral area: largely smooth, dorsal margin with dense, weak punctulae. Netrion: present, smooth, linear. Notaulus: present, simple. Length of notaulus: approximately less than or equal to 1/3 of length of mesoscutum. Width of notaulus: narrow (notaulus width less than or equal to half the width of tegula). Sculpture of mesoscutum: coriaceous. Sculpture of mesoscutellum: weakly coriaceous. Mesoscutellar profile: mainly flat, anterior and posterior edge at same height or nearly so. Mesoscutellar shape: flat, not depressed. Lateral propodeal area: longitudinally costate. Shape of propodeal anterior spine: short, broad, apex subtriangular. Sculpture of propodeum between anterior spines: smooth or largely smooth; with strong, oblique ridges laterally. Sculpture of ventral half of mesepisternum: smooth or nearly so. Sculpture of upper 1/4 of mesopleuron: densely longitudinally costate across half width. Metapleural sculpture: largely smooth except lower half with longitudinal carinae.

Wings. Stigmal vein: present, elongate, narrow. Campaniform sensilla at distal area of stigmal vein: present.

Metasoma. Shape of T1 horn: broad, short. Sculpture of upper portion of T1 horn: longitudinally carinate. Sculpture of posterior portion of T1 horn: smooth. Lateral carinae on T2: present, poorly defined. Sculpture of T2: longitudinally costate on coriaceous background. Sculpture of T3: coriaceous. Sculpture of S3-S6: mainly smooth, with sparse, setigerous punctulae. S2 anterior carina: present, cristate, uninterrupted.

Male. Unknown.

Diagnosis.

This species can be easily separated from all other Odontacolus with smooth, short notauli and a well-developed netrion by the combination of the completely dark brown body, the nearly smooth posterior portion of the mesoscutum (between the notaulus and tegula), and the nearly smooth posterior 1/3 and mesal region of the mesoscutellum.

Link to distribution map.

74

Material examined.

Holotype female: SEYCHELLES: Mahé Island, 1908-1909, B.M. TYPE HYM. 9.400 (deposited in BMNH).

Comments.

The holotype is in good condition except that the right hind wing and right antenna are detached from body and glued to the point.