Paridris xestos Talamas & Masner

Talamas, Elijah J., Masner, Lubomir & Johnson, Norman F., 2013, Systematics of Trichoteleia Kieffer and Paridris Kieffer (Hymenoptera, Platygastroidea, Platygastridae), Journal of Hymenoptera Research 34, pp. 1-79: 1

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Paridris xestos Talamas & Masner

sp. n.

Paridris xestos Talamas & Masner  sp. n. Figures 5, 9, 12, 20, 27, 90-95; Morphbank 42


Female body length: 1.56-2.51 mm (n=20). Male body length: 1.26-2.32 mm (n=12).

Number of basiconic sensilla on A8: one. Shape of male flagellomeres: more than 3 times as long as wide.

Color of head: brown to black; reddish brown. Distal margin of clypeus: serrate. Shape of distal margin of clypeus in anterior view: straight. Width of clypeus: greater than width across toruli. Lateral corner of clypeus: projecting into acute angle. Length of mediofacial striae: not extending above midpoint of compound eye. Anterodorsal node on interantennal process: absent. Central keel: absent. Length of OOL: greater than 2 ocellar diameters. Macrosculpture of frons between median ocellus and inner orbit of eye: absent. Patch of microsculpture posterior to lateral ocellus in male: absent. Patch of microsculpture posterior to lateral ocellus in female: present. Patch of microsculpture between median and lateral ocelli: present. Microsculpture on dorsal head: absent. Microsculpture of posterior gena: absent. Shape of gena: weakly to moderately receding posterior to eye. Macrosculpture of posterior vertex: absent. Patch of microsculpture on temples: present; absent. Occipital carina above occipital foramen: simple. Anterior margin of occipital carina above occipital foramen: comprised of cells. Ventral extent of occipital carina: absent below occipital foramen. Setation of postgena: sparse.

Color of mesosoma: pale brown; reddish brown.

Shape of pronotal shoulder in dorsal view: narrow and striplike. Transverse pronotal carina: present in posterodorsal corner of pronotum. Dorsal half of pronotal cervical sulcus: present as smooth furrow. Ventral half of pronotal cervical sulcus: present as line of large cells. Sculpture of pronotal setal patch: irregular striae to rugulose.

Anterior notaulus: reaching mesoscutal suprahumeral sulcus as continuous furrow. Orientation of notauli: parallel. Shape of posterior notaulus: ovoid. Microsculpture on anterior half of medial mesoscutum: absent. Macrosculpture of anterior medial mesoscutum: absent. Pattern of punctation density on medial mesoscutum: increasing anteriorly. Scutoscutellar sulcus: comprised of short parallel striae. Median carina on posterior mesoscutellum: present. Posterior scutellar sulcus: comprised of shallow round cells.

Punctures on dorsal part of posterior mesepimeral area: absent. Mesopleural carina: absent. Postacetabular sulcus: crenulate. Striae ventrad of mesopleural carina: absent.

Setae on metascutellum: absent. Posterior margin of metascutellum: straight.

Setation of metapleural triangle: moderately dense. Paracoxal and metapleural sulci: fused. Sculpture of posterodorsal part of ventral metapleural area: mostly rugose with small smooth patch; smooth. Dorsal metapleural area: smooth defined area. Posterior margin of metapleuron below propodeal spiracle: with triangular point above metapleural sulcus.

Anterior projection of the propodeum: present. Setation of metasomal depression: absent. Posterior projection of the propodeum: lamellate extension formed from lateral propodeal carina. Plical carina: absent. Lateral propodeal area: undifferentiated from plical area.

Length of postmarginal vein: less than half as long as stigmal vein. Rs in fore wing: spectral. Cu vein in fore wing: spectral. M vein in forewing: spectral. Color of costal cell in female: hyaline. Color of sub-radial area in female: hyaline. Color of costal cell in male: hyaline. Color of cubito-medial area in female: hyaline. Color of anal margin in female: hyaline. Color of cubito-medial area in male: hyaline. Color of anal margin in male: hyaline. RS+M in forewing: nebulous. Color of sub-stigmal area in male: hyaline. Basal vein in hind wing: spectral. Setation of hind wing: uniform throughout.

Color of metasoma: pale brown; reddish brown. Longitudinal median carina on horn of T1: absent. Armature on posterior surface of T1 horn: absent. Interstitial sculpture of T1: finely rugulose. Patch of dense fine setae on anterolateral T1: absent. Form of T2 sulcus: simple constriction. Posterior margin of transverse sulcus on T2: weakly convex. Carina along posterior margin of transverse sulcus on T2 in female: absent. Sublateral tergal carina on T2: absent. Microsculpture on T2: absent. Macrosculpture of T2 in female: longitudinally striate, medial striae not reaching posterior margin. Macrosculpture of T2 in male: longitudinally striate throughout. Carina along posterior margin of transverse sulcus on T2 in male: absent. Microsculpture on T3: absent. Macrosculpture of medial T3 in female: absent. Macrosculpture of lateral T3 in female: absent. Macrosculpture of medial T3 in male: absent. Macrosculpture of lateral T3 in male: weakly longitudinally striate. Macrosculpture of T4 in male: absent. Macrosculpture of female T5: absent. Microscupture on female T6: absent. Constriction of apical T6 in female: absent. Macrosculpture of S1: rugose. Setation of S1: sparse throughout. Distribution of longitudinal striae on S2: present anteromedially. Macrosculpture of S2: longitudinally striate. Form of S2 felt field: line of dense setae along longitudinal ridge. Marginal depression on S3: absent. Marginal depressions on S4: absent. Marginal depression on S5: absent.


Females of Paridris xestos  may be separated from Paridris phrikos  by the smooth T3 and absence of armature on the horn of T1. Males are separated on the sole character of T3 without surface sculpture, compared with weak striation in Paridris phrikos  . This character is the only consistent difference we found between the two series of males, and as a measure of caution, we exclude the males from of Paridris xestos  (as those of Paridris phrikos  ) from the type series.


The adjectival epithet “xestos” is Greek for “smoothed” or “polished” and refers to the smoothness of metasomal tergites 3-6.

Link to distribution map.


Material examined.

Holotype, female: FIJI: Northern Div., Cakaudrove Prov., Taveuni Isl., 5.6km SE Tavuki, MT1, Devo Peak, 16.843°S, 179.966°W, 1187m, 14. XI– 21.XI.2002, malaise trap, E. I. Schlinger & M. Tokota’a, FBA129279 (deposited in BPBM). Paratypes: FIJI: 40 females, FBA019799, FBA019814, FBA019830, FBA019834, FBA041001, FBA042153, FBA042184, FBA042197, FBA042216, FBA052822, FBA054137, FBA057544, FBA057550, FBA072049, FBA072106, FBA099700, FBA104357, FBA105661, FBA107839, FBA107841, FBA110235, FBA129278, FBA134354, FBA134430, FBA136326, FBA149714, FBA149722, FBA149728, FBA149729, FBA164529, FBA164540, FBA164885, OSUC 436195, OSUC 436196 (BPBM); FBA042174, FBA042189, FBA057543 (CNCI); FBA110237 (FNIC); FBA042185, FBA149720 (OSUC). Other material: FIJI: 12 males, FBA019809, FBA104330, FBA113214, FBA146506, FBA146508, FBA149371, FBA185056 (BPBM); FBA057542, FBA059058, FBA113217 (CNCI); FBA164310 (FNIC); FBA129282 (OSUC).