Oxyscelio arcus Burks
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publication ID |
https://dx.doi.org/10.3897/zookeys.292.3867 |
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persistent identifier |
https://treatment.plazi.org/id/567D90C3-4B0A-71D1-CCB6-2E4D1406F592 |
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treatment provided by |
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scientific name |
Oxyscelio arcus Burks |
| status |
sp. n. |
Oxyscelio arcus Burks ZBK sp. n. Figures 32-37Morphbank30
Description.
Female. Body length 3.45-3.95 mm (n=14).
Radicle color: same color as scape. Scape color: Yellowish. A4: broader than long. 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: with 3 or more broadly interrupted transverse carinae. 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 ca rina: present. Direction of middle genal carina dorsally: parallel to eye margin. Major sculpture of gena anteriorly: umbilicate-foveate; rugose. Major sculpture of gena posteriorly: umbilicate-foveate; rugose. Microsculpture of gena anteroventrally: granulate. Microsculpture of gena posteroventrally: granulate. Median carina extending posteriorly from hyperoccipital carina: absent. Hyperoccipital carina: complete, continuous with anterior genal carina. Lateral connection between hyperoccipital and occipital carinae: absent. Area between vertex and occipital carina: with transverse carinae; irregularly rugose. Occipital carina medially: sinuate, concave medial to corners, but without a median peak. Lateral corners of occipital carina: sharp and protruding.
Lateral pronotal area: without bulge projecting towards anterior pit. Epomial corner: weak. Netrion surface anteriorly: not inflexed. Mesoscutum anteriorly: steep. Mesoscutal median carina: present and complete. Longitudinal carina between median carina and notauli: absent. Major sculpture of medial mesoscutum anteriorly: umbilicate-punctate. Major sculpture of medial mesoscutum posteriorly: umbilicate-punctate. Microsculpture of medial mesoscutum anteriorly: granulate. Microsculpture of medial mesoscutum posteriorly: absent. Major sculpture of mesoscutellum: umbilicate-foveate; longitudinally rugose. Microsculpture of mesoscutellum medially: absent. Microsculpture of mesoscutellum laterally: absent. 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: 4. Number of carinae crossing femoral depression: more than 5. Mesepimeral sulcus pits: more than 5. Metascutellum dorsally: concave. Metascutellar sculpture dorsally: with scattered rugae. Median carina of metascutellum: absent or branched. Metascutellar setae: with many dorsal setae. Metascutellar apex: weakly emarginate. Metapleuron above ventral metapleural area: crossed by carinae. Metasomal depression setae: absent. Lateral propodeal carinae anteromedially: weakly diverging. Anterior areoles of metasomal depression: one or more areoles present. Anterior longitudinal carinae in metasomal depression: absent. Lateral propodeal areas: separated medially. Postmarginal vein: present. Fore wing apex: reaching middle of T6.
T1 midlobe: with 4 longitudinal carinae. T1: without anterior bulge. T2: with straight longitudinal striae or rugae. T6: broader than long. 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 3.4-3.6 mm (n=5). A5 tyloid: carina-like, not expanded. A11: broader than long. Median tooth of frontal depression: absent. Median lobe of T1: with 4 longitudinal carinae. Metasomal apex: with no distinct corners.
Diagnosis.
Both sexes: Frons without elevation between antennal foramen and eye. Hyperoccipital carina present, continuous with anterior genal carina. Medial mesoscutum with strong sculpture, but without longitudinal rugae. Metascutellum with dorsal setae. Female: A4, A5 broader than long T1 with 4 longitudinal carinae. Male: A5 tyloid expanded. A11 broader than long. Frontal depression without tooth-like median protrusion dorsally. T1 midlobe with 4 longitudinal carinae. T7 without protruding posterolateral corners. Oxyscelio arcus is very similar to Oxyscelio ceylonensis and Oxyscelio unguis . It differs from them both in sculpture and body shape, and in other features such as T1 midlobe carinae and the apex of T7.
Etymology.
Latin noun, genitive case, meaning “arch.”
Link to distribution map.
[http://hol.osu.edu/map-full.html?id=275557]
Material examined.
Holotype, female: THAILAND: Phitsanulok Prov., mixed deciduous forest, T920, Thung Salaeng Luang National Park, 16°50.563'N, 100°51.757'E, 481m, 12. IX– 13.IX.2006, pan trap, Pongpitak & Pranee, OSUC 361931 (deposited in QSBG). Paratypes: (12 females, 7 males) INDONESIA: 3 females, OSUC 369077, 369079 (CNCI); ROMEnt Spec. No. 112246 (ROME). THAILAND: 10 females, 7 males, OSUC 368627, 368690, 368745, 464056 (CNCI); OSUC 224350, 247657336161, 352486, 361962 (OSUC); OSUC 247624, 254743, 336708, 361285-361286, 368520 (QSBG); OSUC 285223, 336707 (WINC).
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