Paridris yumai Talamas

Talamas, Elijah J. & Buffington, Matthew L., 2015, Fossil Platygastroidea in the National Museum of Natural History, Smithsonian Institution, Journal of Hymenoptera Research 47, pp. 1-52 : 19-26

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Paridris yumai Talamas

sp. n.

Taxon classification Animalia Hymenoptera Scelionidae

Paridris yumai Talamas sp. n. Figures 70-71, 72-73; Morphbank 22


Female body length: 1.57-1.79 mm (n=3). Male body length: 1.56-1.68 mm (n=2). Number of basiconic sensilla on A8: 1. Width of clypeus: equal to or less than width of interantennal process. Lateral corner of clypeus: projecting into acute angle. Development of interantennal process ventrally: not reaching clypeus. Number of mandibular teeth: three. Length of mediofacial striae: not extending above midpoint of eye. Shape of gena in dorsal view: moderately receding behind compound eye. Striae on gena: pronounced. Length of striae on gena: extending above ventral margin of eye. Distribution of microsculpture on head: absent. Length of OOL: greater than 2 ocellar diameters. Occipital carina above foramen magnum: present. Anterior margin of occipital carina: comprised of small to miniscule cells. Setation of postgena: sparse. Ventral extent of occipital carina: uncertain, extending to base of mandible.

Transverse pronotal carina: present in posterior half of pronotum. Shape of pronotal shoulder in dorsal view: narrow and striplike. Form of pronotal suprahumeral sulcus: areolate.

Macrosculpture of anterior medial mesoscutum: absent. Notaulus: percurrent, reaching suprahumeral sulcus as a smooth furrow. Orientation of notauli: parallel. Shape of notaulus at posterior apex: ovoid. Macrosculpture of mesoscutellum: absent.

Postacetabular sulcus: smoothly furrowed. Mesopleural carina: absent. Punctures on posterodorsal mesepimeral area: large. Sculpture of mesopleuron anteroventral to femoral depression: densely punctate anteriorly, smooth posteriorly and on ventral surface. Sculpture of posterior mesepimeral area: smooth.

Form of metascutellum in female: bispinose. Form of metascutellum in male: bispinose.

Paracoxal and metapleural sulci: separate. Setation between metapleural triangle and metapleural sulcus: absent. Sculpture between metapleural triangle and metapleural sulcus: smooth. Sculpture of metapleural triangle: punctate rugose..

Anterior propodeal projection: absent. Setation of metasomal depression: absent. Sculpture of lateral propodeal area: punctate rugulose.

Macrosculpture of T1: longitudinally striate. Interstitial sculpture of T1: finely rugulose. Adornment of horn on T1 in female: transverse ridge at base of horn. Macrosculpture of T2 in female: longitudinally striate throughout. Macrosculpture of T2 in male: longitudinally striate throughout. Microsculpture on T2: absent. Posterior margin of transverse sulcus on T2: straight. Carina along posterior margin of transverse sulcus on T2 in male: absent. Carina along posterior margin of transverse sulcus on T2 in female: present. Macrosculpture of T3 medially in female: absent. Macrosculpture of T3 laterally in female: longitudinally striate. Macrosculpture of T3 medially in male: absent. Macrosculpture of T3 laterally in male: longitudinally striate. Constriction of apical T6 in female: present. Punctation of T6 in female: densely and finely punctate throughout. Form of S2 felt field: longitudinal row or patch of setigerous punctures. Macrosculpture of S2 medially: longitudinally striate. Macrosculpture of S3: absent.

Wing development: macropterous. Basal vein in hind wing: spectral. Length of postmarginalis: approximately equal to length of stigmalis. RS+M in fore wing: spectral.


Paridris yumai can be separated from most species of Paridris by the smooth clypeus that is narrower than the width across the toruli (Fig. 72, as in Fig. 77). In the vast majority of species the clypeus is distinctly wider than the distance across the toruli and ventrally serrate. This narrow form of the clypeus is shared in the New World by just one other species, Paridris armata Talamas (Fig. 77). Paridris lemete Talamas & Masner is similar in that the clypeus is not wider than the distance across the toruli, but the ventral margin is serrate (Fig. 76).

In Paridris yumai the metascutellum is posteriorly emarginate, forming two lateral spines, separating it from Paridris lemete in which the posterior margin of the metascutellum is straight, forming a transverse strip (Fig. 74). Females of these species may also be separated by the basiconic sensilla on A8: two are present in Paridris lemete and one in Paridris yumai . Paridris armata is known only from a male specimen, which can be separated from males of Paridris yumai by the coarsely foveate mesoscutellum (Fig. 75).


This species is named for djembe teacher and herbalist, Yuma "Dr Yew" Bellomee, as an expression of appreciation. Yuma’s influence has increased the mental and physical health of the first author, in turn producing a positive effect on scientific productivity and general happiness.

Phylogenetic analysis.

We coded the morphology of Paridris yumai in the matrix provided in Talamas et al. (2013) and reran the combined analysis of molecular and morphological data using the same tree search parameters in TNT ( Goloboff et al. 2008). Inclusion of Paridris yumai decreased the resolution between species within Trichoteleia Kieffer, and in Paridris , but not within the nephta and pallipes species groups (Fig. 78). The characters of Paridris yumai that we were unable to code due to artifacts associated with the amber matrix are likely culprits in adding ambiguity to the phylogenetic matrix, and thus the decreased resolution.

Link to distribution map.


Material examined.

Holotype, female: DOMINICAN REPUBLIC:USNMENT01059095 (deposited in USNM). Paratypes: DOMINICAN REPUBLIC: 2 females, 2 males, USNMENT00977548, USNMENT01059077, USNMENT01059094, USNMENT01059100 ( USNM).