Oxyscelio fistulae 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 : 109-110

Oxyscelio fistulae Burks sp. n. Figures 188-191Morphbank61

Description.

Female. Unknown.

Male.Body length 4.7-4.9 mm (n=3).

Radicle color: darker than scape. Scape color: Yellowish. Antennal club: formed, segments compact. A5 tyloid: carina-like, not expanded. A11: longer than broad.

Interantennal process: elongate. Median longitudinal elevation in frontal depression: absent. Frontal depression: concave. Frontal depression sculpture: with 3-5 complete transverse carinae. Submedian carina: strong, formed by a sharp raised carina. Submedian carina medially: without peak. Median tooth of frontal depression: absent. 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. Major sculpture of gena posteriorly: 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: absent. 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-foveate. Major sculpture of medial mesoscutum posteriorly: umbilicate-foveate. Microsculpture of medial mesoscutum anteriorly: granulate. Microsculpture of medial mesoscutum posteriorly: granulate. Major sculpture of mesoscutellum: umbilicate-foveate; longitudinally 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: 2. Number of carinae crossing femoral depression: more than 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. Metascutellar apex: weakly emarginate. Metapleuron above ventral metapleural area: crossed by carinae. Metasomal depression setae: absent. Anterior areoles of metasomal depression: absent. Anterior longitudinal carinae in metasomal depression: absent. Lateral propodeal areas: meeting for only a short distance medially. Postmarginal vein: present.

Median lobe of T1: with 5 longitudinal carinae. Metasomal apex: with acuminate lateral corners.

Diagnosis.

Male: A11 longer than broad. Interantennal process elongate, with a concave, setose apex. Mesoscutellum with granulate sculpture laterally. Metascutellum narrow, angularly emarginate apically. Propodeum with a short expansion where the lateral propodeal carinae meet anteriorly. T1 midlobe with 5 longitudinal carinae. T7 with short, sharp posterolateral corners.

Etymology.

Latin noun, genitive case, meaning “tube.”

Link to distribution map.

[http://hol.osu.edu/map-full.html?id=275543]

Material examined.

Holotype, male: INDONESIA: Sulawesi Tengah Prov., nr. Morowali, Ranu River area, 27. I– 20.IV.1980, M. J. D. Brendell, OSUC 376620 (deposited in BMNH). Paratypes : INDONESIA: 2 males, OSUC 376616, 376621 (BMNH).

Comments.

Oxyscelio fistulae is unusual in having an elongate interantennal process. This state is also found in a species from New Guinea and New Britain, but the process is differently shaped in that species.