Odontacolus pintoi, A. Valerio, Alejandro, Austin, Andrew D., Masner, Lubomir & Johnson, Norman F., 2013

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 : 57-59

Odontacolus pintoi sp. n. Figures 20, 22, 239-244, 296, 300, 302, 318, 323-324; Morphbank 85

Description.

Female. Body length: 1.06 - 1.25 mm (n=7). Antenna color: antennal clava dark brown, otherwise yellow. Body color: mostly dark brown, T1 (except dark brown horn) and anterior portion of T2 yellow. Coxae color: honey yellow. Leg color (excluding coxae): yellow. Fore wing color: basal half hyaline, otherwise weakly infuscate.

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: slightly bulging. Development of central keel on frons: present, elongate (equal to or greater than 1/3 × height of frons), but not reaching anterior ocellus. Sculpture on upper frons below anterior ocellus: granulose throughout. Sculpture of malar space: largely smooth, with sparse, weak, fan-like striae. Furrow at lateral portion of antennal scrobe: absent. Mesal surface of vertex: flat to weakly convex. Size of lateral ocelli: minute. Distance between lateral ocellus and occipital carina: greater than 1.5 × 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: coriaceous dorsally, otherwise smooth.

Mesosoma. Dorsal mesosoma in lateral view: convex. Sculpture of pronotal cervical area: with small (at most as large as crenulae on anterior edge of mesoscutum), well-defined foveae. Sculpture of pronotal lateral area: transversely costate. 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: smooth or nearly so. Mesoscutellar profile: mainly flat, anterior and posterior edge at same height or nearly so. Mesoscutellar shape: flat, not depressed. Lateral propodeal area: sparsely transversely carinate. Shape of propodeal anterior spine: short, broad, apex subtriangular. Sculpture of propodeum between anterior spines: smooth or largely smooth. Sculpture of ventral half of mesepisternum: smooth or nearly so. Sculpture of upper 1/4 of mesopleuron: densely longitudinally costate across entire width. Metapleural sculpture: smooth.

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

Metasoma. Shape of T1 horn: narrow, elongate. Sculpture of upper portion of T1 horn: smooth. Sculpture of posterior portion of T1 horn: largely smooth, with sparse longitudinal carinae. Lateral carinae on T2: absent. Sculpture of T2: meson and posterior margin smooth, otherwise longitudinally costate. Sculpture of T3: sublaterally weakly longitudinally costate in anterior third, otherwise smooth. Sculpture of S3-S6: finely, weakly coriaceous. S2 anterior carina: present, rounded, uninterrupted.

Male. Body length: 1.27 - 1.30 mm (n= 3). Body color: antenna yellow as legs and T1, remainder of metasoma dark brown as dorsal mesosoma as head, remainder of body dark honey yellow. Sculpture of antennal scrobe: with weakly sinuate, fine, weak dorsoventral carinae, except area below anterior ocellus with granulate sculpture. Shape and size of anterior ocellus: minute, very round. Vertex posterior area sculpture: dense granulate sculpture. Occipital carina dorsal area: cristate, conspicuously present. Netrion: well-defined, suboval, broad longitudinal carinae present before netrion. Sculpture of mesepisternum: absent (smooth). Sculpture of pronotal lateral areas: with few, sinuate, transverse carinae. Length of fore wing stigmal vein: conspicuously elongate. Angle of stigmal vein in relation to anterior margin of fore wing: at an angle of approximately 45°. Sculpture of T2: mesal area smooth, remainder of tergum with weak longitudinal carinae.

Diagnosis.

Odontacolus pintoi can be distinguished from all other species that have an obscured netrion in combination with the elongate and broad ventral portion of the head (below the eyes in anterior view) (Fig. 243) by the mostly smooth gena (shiny, sometimes with large coriaceous sculpture present but restricted to upper 1/3), and the smooth antennal scrobe (except for the presence of a central keel).

Etymology.

This species is named after the trichogrammatid specialist Dr John Pinto, formerly of the University of California, Riverside. The epithet is a noun in the genitive case.

Link to distribution map.

86

Biology.

Specimens from South Australia have been reared from eggs of Clubiona cycladata Simon ( Araneae : Clubionidae ) under the bark of eucalypt trees (recorded as Odontacolus sp. in Austin 1984 & Austin 1985).

Material examined.

Holotype female: AUSTRALIA: WA, Fitzgerald River National Park, 33°41.6'S, 119°42.9'E, 17.X.2002, yellow pan trap, J. Pinto, OSUC 239098 (deposited in WAMP). Paratypes: (79 females, 4 males) AUSTRALIA: 54 females, 4 males, OSUC 239044-239054, 239064-239067, 239069, 239075-239076, 239090, 239097, 239103 (ANIC); OSUC 239085-239088 (BMNH); OSUC 238542, 239072, 239100-239102 (CNCI); OSUC 239099 (OSUC); OSUC 239070-239071, 239073-239074, 239096, 239106-239107, 239109-239115 (QDPC); OSUC 239055-239063, 239092-239095 (WINC). NEW ZEALAND: 8 females, OSUC 239082 (LUNZ); OSUC 239077-239081, 239083-239084 (NZAC). NORFOLK ISLAND: 17 females, OSUC 239031-239042, 239068, 239089, 239104-239105 (ANIC); OSUC 239091 (QDPC). Other material: AUSTRALIA: 1 female, OSUC 239043 (ANIC).

Comments.

The holotype is in perfect condition; the paratypes are for the most part in very good condition except for OSUC 239063 and OSUC 239074 which have the heads detached from body and glued to the point, and OSUC 239046 which is missing the metasoma. Some females have a different color pattern in that the whole body is dark brown with the anterior edge of T1 (except the horn), T2 and the legs yellow.