Oxyscelio dasymesos 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 : 99-101

Oxyscelio dasymesos Burks sp. n. Figures 160-165Morphbank55

Description.

Female. Body length 3.7-4.3 mm (n=9).

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

Interantennal process: not elongate. Median longitudinal elevation in frontal depression: present. Frontal depression: concave. Frontal depression sculpture: with 2 complete transverse carinae. Submedian carina: weak, shallow and rounded or formed by ledge. 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: umbilicate-foveate; rugose. Major sculpture of gena posteriorly: umbilicate-foveate; rugose. 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: present as a weak elevation. Area between vertex and occipital carina: umbilicate-foveate; irregularly rugose. Occipital carina medially: absent. 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: not steep. Mesoscutal median carina: present and complete. Longitudinal carina between median carina and notauli: absent. Major sculpture of medial mesoscutum anteriorly: umbilicate-punctate; irregularly rugose. Major sculpture of medial mesoscutum posteriorly: umbilicate-punctate; transversely rugose. Microsculpture of medial mesoscutum anteriorly: absent. Microsculpture of medial mesoscutum posteriorly: absent. Major sculpture of mesoscutellum: umbilicate-foveate; transversely 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: 3. Number of carinae crossing femoral depression: 3-5. Mesepimeral sulcus pits: more than 5. Metascutellum dorsally: concave. Metascutellar sculpture dorsally: smooth or with transverse carinae. Median carina of metascutellum: absent or branched. Metascutellar setae: absent; with many dorsal setae. Metascutellar apex: deeply emarginate. Metapleuron above ventral metapleural area: crossed by carinae. Metasomal depression setae: present. 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.

T 1 midlobe: with 6 or more longitudinal carinae. T1: without anterior bulge. T2: with straight longitudinal striae or rugae. T6: broader than long. Apical flange of T6: not exposed apically. Metasomal apex: tapering to a sharp point. Major sculpture of T6: umbilicate-punctate; longitudinally striate or rugose. Microsculpture of T6: absent.

Male.Body length 3.1-4.15 mm (n=20). A5 tyloid: carina-like, not expanded. A11: longer than broad. Median tooth of frontal depression: absent. Median lobe of T1: with 5 longitudinal carinae; with 6 longitudinal carinae. Metasomal apex: with acuminate lateral corners.

Diagnosis.

Both sexes: Metascutellum deeply emarginate with rounded apical margin, not dorsally setose. Propodeum setose in metasomal depression, with an anterior subrectangular areole. Female: T1 midlobe with 6 longitudinal carinae. T6 apically tapering to a sharp point. Male: A11 longer than broad. T1 midlobe with 5-6 longitudinal carinae. T7 with sharp, protruding posterolateral corners.

Etymology.

Greek noun meaning "medial setae." Refers to the setose metasomal depression.

Link to distribution map.

[http://hol.osu.edu/map-full.html?id=275536]

Material examined.

Holotype, female: INDONESIA: Kalimantan Barat Prov., Cabang Panti Research Station, RR6, 1° rainforest / sandstone closed canopy, IIS 910136, Gunung Palung National Park, 01°15'S, 110°05'E, 100m, 17.VI-29.VI.1991, canopy malaise trap, Darling, Rosichon & Sutrisno, OSUC 257091 (deposited in MBBJ). Paratypes: (8 females, 28 males) BRUNEI: 1 female, OSUC 376648 (BMNH). INDONESIA: 5 females, 24 males, OSUC 376651 (BMNH); OSUC 228703, 228731, 228747, 241813, 247840, 251429-251430 (MBBJ); OSUC 228691, 228701-228702, 228704, 228732, 228739, 240920, 247815-247816, 248922 (OSUC); OSUC 228699, 247837, 247933, 247957, 257039, 257041, 257064, 257066, 257068, 257071, 257079 (ROME). MALAYSIA: 2 females, 4 males, OSUC 376578 (BMNH); OSUC 369315, 369324-369325, 463994 (CNCI); OSUC 453767 (OSUC).