Odontacolus whitfieldi, 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 : 67-69

Odontacolus whitfieldi sp. n. Figures 275-280, 304, 311, 315, 327-328; Morphbank 97

Description.

Female. Body length: 1.35 - 1.97 mm (n=9). Antenna color: completely yellow. Body color: completely dark brown. 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: largely smooth ventrally, dorsally with sinuate, transverse ridges.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: with sparse, transverse costae mixed with weak, dense granulae. Sculpture of malar space: weakly rugulose 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: weakly crenulate throughout. Distance from occipital carina to orbital carina: at least 2 × width of occipital carina; slightly greater than 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 cervical area: with small (at most as large as crenulae on anterior edge of mesoscutum), well-defined foveae. Sculpture of pronotal lateral area: coriaceous. Netrion: present, smooth, well developed, sub-obovate. 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: weakly rugulose mixed with weak granulae. Sculpture of mesoscutellum: granulose. Mesoscutellar profile: elevated, anterior margin higher than posterior. Mesoscutellar shape: flat, not depressed. propodeal area: densely, finely rugulose. Shape of propodeal anterior spine: elongate, narrow, apex rounded. 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: with sparse, broad, smooth costate sculpture reaching just half of its 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: largely smooth, with sparse longitudinal carinae. Lateral carinae on T2: present, well-defined. Sculpture of T2: longitudinally costate on coriaceous background. Sculpture of T3: anterior third weakly longitudinally costate, otherwise coriaceous. Sculpture of S3-S6: S3 weakly granulose, S4-S6 weakly, finely coriaceous. S2 anterior carina: present, cristate, uninterrupted.

Male. Body length: 1.29 - 1.37 mm (n=5). Body color: antenna yellow as legs, head, mesoscutum, mesoscutellum and metasoma dark brown, remainder of body light honey-yellow. Sculpture of antennal scrobe: lower mesal area smooth, remainder with weak coriaceous sculpture mixed with somewhat sinuate carinae (especially at upper 1/5), except area below anterior ocellus with granulose sculpture. Shape and size of anterior ocellus: small, round. Vertex posterior area sculpture: with dense, small granulae. Occipital carina dorsal area: cristate, conspicuously present. Netrion: well-defined, suboval. Sculpture of mesepisternum: with few, thin, transverse carinae. Sculpture of pronotal lateral areas: with few, thin transverse carinae, otherwise mainly smooth. 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: mostly smooth, lateral areas with few sparse longitudinal carinae.

Diagnosis.

Odontacolus whitfieldi is very similar to Odontacolus kiau but the former has a complete S2 anterior carina; Odontacolus kiau lacks this carina. Thesespecies belong to a group that have short and smooth notauli, a well-defined netrion, a central keel present on the frons and sculptured antennal scrobes always with transverse costae; within this group Odontacolus mayri can be separated from Odontacolus whitfieldi and Odontacolus kiau by its completely yellow body and the weakly granulose sculpture of the mesoscutum.

Etymology.

This species is named after our friend and colleague, the microgastrine systematist Dr Jim Whitfield at the University of Illinois. The epithet is a noun in the genitive case.

Link to distribution map.

98

Material examined.

Holotype female: INDONESIA: Sulawesi Utara Prov., Toraut, forest edge, Bogani Nani Wartabone (Dumoga-Bone) National Park, 15. VI– 20.VI.1985, Malaise trap, OSUC 239160 (deposited in CNCI). Paratypes: (43 females, 5 males) CHINA: 13 females, 5 males, UCRC ENT 171075, 171078-171094 (UCRC). INDIA: 3 females, OSUC 321899 (BMNH); OSUC 238793, 238806 (CNCI). INDONESIA: 3 females, OSUC 238423, 238426, 239181 (CNCI). MALAYSIA: 5 females, OSUC 239157, 239162, 239178 (CNCI); OSUC 239187 (OSUC); OSUC 239161 (WINC). THAILAND: 18 females, OSUC 239156 (BMNH); OSUC 261747 (CNCI); OSUC 250856, 261746, 266234, 280625 (OSUC); OSUC 239163, 247709, 250610, 250859, 321866, 321875, 339578, 339580, 339584-339585, 339593, 339602 (QSBG). VIETNAM: 1 female, OSUC 278520 (RMNH).

Comments.

Holotype specimen is in perfect condition. Most of paratype specimens are in good condition.