Dvivarnus elektrolythron Talamas & Miko, 2016

Talamas, Elijah J., Miko, Istvan & Copeland, Robert S., 2016, Revision of Dvivarnus (Scelionidae, Teleasinae), Journal of Hymenoptera Research 49, pp. 1-23 : 11-12

Dvivarnus elektrolythron Talamas & Miko sp. n.

Figures 15 , 22 , 27 , 28-31

Description.

Color of antennae in female: brown throughout with dense white setae on A2-A4. Color of mesosoma: mesoscutellum and propodeum black, metascutellar spine brown, otherwise red. Color of head: except interantennal process, black. Setation of torular triangle: present. Continuity of torular triangle and central keel: torular triangle opened dorsally, not continuous reduced central keel. Color of interantennal process: yellowish brown. Setation of frons: transverse strip directly above interantennal process glabrous, otherwise setose. Sculpture of dorsal frons: strigose. Sculpture of vertex: strigose.

Epomial carina: indistinguishable from dorsoventral striation. Netrion in lateral view: extending dorsally to proximity of mesothoracic spiracle. Netrion sulcus: complete, extending dorsally to posterior margin of pronotum. Sculpture of vertical face of pronotum: dorsoventrally strigose anteriorly, longitudinal striate posteriorly. Sculpture of mesoscutum: finely punctate. Density of setation on medial mesoscutum: dense. Notaulus: absent. Sculpture of scutoscutellar sulcus: smooth. Orientation of transaxillar carina: projecting posterolaterally. Sculpture of mesoscutellum: finely areolate. Density of setae on lateral margin of mesoscutellum: sparse. Posterior margin of mesoscutellum: convex between mesoscutellar spines. Median mesoscutellar spine: present. Lateral extreme of posterior scutoscutellar sulcus: foveae terminating below mesoscutellar spine. Sculpture of metanotal trough: smooth with elongate furrow in ventral half. Lateral propodeal carina: absent. Forewing pattern in female: wing membrane and setae brown posterior to marginal vein and in distal third, separated by a band of hyaline membrane and white setae. Sculpture of metapleural sulcus: smooth. Sculpture of dorsal metapleural area: transversely rugose. Sculpture of ventral metapleural area: transversely rugose. Number of setae on lateral T1: 3. Sculpture of T4: punctate. Lateral patch on T5: present. Number of apical setae on T7: 2.

Diagnosis.

Dvivarnus elektrolythron may be separated from females of D. mikuki and D. agamades by the incomplete central keel on the frons (Fig. 15 ), the form of the lateral patch on T4 (Figs 22 , 29 ), and by the medially convex posterior margin of the mesoscutellum.

Etymology.

The epithet for this species refers to the bright red color on the mesosoma of this species. It is derived from the words elektron which in Classical Greek means “amber” and, by extension in modern times, “electricity”, and lythron, meaning “gore”. The name is treated as a noun in apposition.

Link to distribution map.

http://hol.osu.edu/map-large.html?id=403212

Material examined.

Holotype, female: IVORY COAST: Savanes Rég., Korhogo Dept., Konborodougou , 18.III-21.III.1984, M. Matthews, USNMENT01109168 (deposited in CNCI).

Figures

Figure 27. Dvivarnus elektrolythron, female holotype (USNMENT 0109168), head, mesosoma, metasoma, lateral view. Scale bar in millimeters.

Figure 15 - 19. 15 Dvivarnus elektrolythron, female holotype (USNMENT 01109168), head and antennae, anterior view 16 D. agamades, female (USNMENT 01109190), head, anterior view 17 D. agamades, male (USNMENT 01109177), head, anterior view 18 D. mikuki, female paratype (USNMENT 01109214), head and antenna, anterior view 19 D. mikuki, male (USNMENT 01109158), head, anterior view. Scale bars in millimeters.

Figure 20 - 24. 20 Trimorus sp., female (USNMENT 01109195), head, mesosoma, metasoma, dorsal view 21 Dvivarnus mikuki, female (USNMENT 01109213), metasoma, dorsolateral view 22 D. elektrolythron, female (USNMENT 01109168), metasoma, dorsolateral view 23 D. agamades, female (USNMENT 01109174), metasoma, dorsolateral view 24 Trimorus sp., female (OSUC 186090), metasoma, posterodorsal view. Scale bars in millimeters.

Figure 28 - 31. Dvivarnus elektrolythron, female holotype (USNMENT 0109168) 28 head, mesosoma, metasoma, dorsal view 29 metasoma, dorsal view 30 pronotum, anterolateral view 31 posterior mesosoma, dorsal view. Scale bars in millimeters.