Oxyscelio anguli Burks

Burks, Roger A., Masner, Lubomir, Johnson, Norman F. & Austin, Andrew D., 2013, Systematics of the parasitic wasp genus Oxyscelio Kieffer (Hymenoptera, Platygastridae s. l.), Part I: Indo-Malayan and Palearctic fauna, ZooKeys 292, pp. 1-263 : 29-31

Oxyscelio anguli Burks sp. n. Figures 16-21Morphbank27

Description.

Female. Body length 4.75-5.75 mm (n=12).

Radicle color: same color as scape. Scape color: Yellowish. A4: broader than long; as long as broad. A5: broader than long. Antennal club: formed, segments compact.

Interantennal process: not elongate. Median longitudinal elevation in frontal depression: absent. Frontal depression: concave. Frontal depression sculpture: without transverse or oblique carinae below submedian carina. Submedian carina: strong, formed by a sharp raised carina. Submedian carina medially: without peak. Concavity across dorsal part of frontal depression: absent. Depression extending ventrally from median ocellus: absent. Upper frons: not hood-like. Malar area near antennal foramen: without carina or expansion. Malar area at mouth corner: with radiating striae. Smooth strip along posterior side of malar sulcus: absent or not consistently broad. Middle genal carina: present. Direction of middle genal carina dorsally: parallel to eye margin. Major sculpture of gena anteriorly: rugose; umbilicate-punctate. Major sculpture of gena posteriorly: umbilicate-foveate. Microsculpture of gena anteroventrally: absent. Microsculpture of gena posteroventrally: absent. Median carina extending posteriorly from hyperoccipital carina: absent. Hyperoccipital carina: indicated by rugae. Lateral connection between hyperoccipital and occipital carinae: absent. Area between vertex and occipital carina: umbilicate-foveate; with transverse carinae. Occipital carina medially: uniformly rounded. Lateral corners of occipital carina: not protruding.

Lateral pronotal area: without bulge projecting towards anterior pit. Epomial corner: strong. Netrion surface anteriorly: not inflexed. Mesoscutum anteriorly: steep. Mesoscutal median carina: present and complete. Longitudinal carina between median carina and notauli: present. Major sculpture of medial mesoscutum anteriorly: umbilicate-foveate; transversely rugose. Major sculpture of medial mesoscutum posteriorly: umbilicate-punctate; transversely rugose. Microsculpture of medial mesoscutum anteriorly: absent; granulate. Microsculpture of medial mesoscutum posteriorly: absent; granulate. Major sculpture of mesoscutellum: umbilicate-foveate; irregularly rugose. Microsculpture of mesoscutellum medially: absent. Microsculpture of mesoscutellum laterally: granulate. Mesoscutellar apex: convex or straight. Setae along anterior limit of femoral depression: arising from rows of foveae. Number of carinae crossing speculum above femoral depression: 3. Number of carinae crossing femoral depression: more than 5. Mesepimeral sulcus pits: more than 5. Metascutellum dorsally: flat. Metascutellar sculpture dorsally: with scattered rugae. Median carina of metascutellum: absent or branched. Metascutellar setae: absent. Metascutellar apex: convex or straight. Metapleuron above ventral metapleural area: crossed by carinae. Metasomal depression setae: absent. Lateral propodeal carinae anteromedially: strongly diverging. Anterior areoles of metasomal depression: absent. Anterior longitudinal carinae in metasomal depression: absent. Lateral propodeal areas: separated medially. Postmarginal vein: absent. Fore wing apex: reaching middle of T4.

T1 midlobe: obscured by other raised sculpture. T1: with small rounded anterior bulge, not reaching metascutellum. T2: with straight longitudinal striae or rugae. T6: longer than broad. Apical flange of T6: exposed apically. Metasomal apex: rounded. Major sculpture of T6: umbilicate-punctate; longitudinally striate or rugose. Microsculpture of T6: absent.

Male. Body length 4.65-4.7 mm (n=2).A5 tyloid: carina-like, not expanded. A11: longer than broad. Median tooth of frontal depression: absent. Median lobe of T1: with 5 longitudinal carinae. Metasomal apex: with acuminate lateral corners.

Diagnosis.

Both sexes: Hyperoccipital carina indicated by rugae; occipital carina complete. Mesosoma very tall and steep anteriorly, descending at a right angle. Medial mesoscutum without distinct carinae between notauli and median mesoscutal carina. Mesoscutellum with some granulate sculpture posterolaterally. Metascutellum extending over base of T1, with many longitudinal carinae or rugae. Female: Fore wing long enough to reach middle of T4. T1 midlobe with an elevation obscuring carinae anteriorly. T6 slightly longer than broad. Male: A11 longer than broad. T1 midlobe with 4 longitudinal carinae. T7 with sharp, protruding posterolateral corners. Males of Oxyscelio anguli are difficult to separate from those of Oxyscelio limae , but have a slightly longer flagellum, more granulate sculpture, and a slightly broader metascutellum.

Etymology.

Latin noun, genitive case, meaning “corner.” Refers to the slightly protruding corners of some metasomal terga.

Link to distribution map.

[http://hol.osu.edu/map-full.html?id=275509]

Material examined.

Holotype, female: SRI LANKA: Uva Prov., Moneragala Dist., 15km E Uda Walawe, 06°27'N, 80°28'E, 31.VII-3.VIII.1993, K. V. Krombein, J. W. Norden & B. B. Norden, OSUC 268177 (deposited in ISDF).Paratypes: SRI LANKA: 12 females, 2 males, OSUC 369090, 369160 (CNCI); OSUC 268098-268099, 268101, 268103, 268122, 268127-268128, 268130, 268142, 268147, 268164, 268279 (USNM).