Ismarus steineri, Kim, Chang-Jun, Copeland, Robert S. & Notton, David G., 2018

Kim, Chang-Jun, Copeland, Robert S. & Notton, David G., 2018, The family Ismaridae Thomson (Hymenoptera, Diaprioidea): first record for the Afrotropical region with description of fourteen new species, African Invertebrates 59 (2), pp. 127-163 : 154-155

Ismarus steineri sp. n. Figure 13A− E

Diagnosis.

The radial cell slightly longer than marginal vein, all metasomal sutures complete but weakly impressed and tergites matte, with fine micropunctures are unique characters among Ismarus .

Type material

(1♂). Holotype, 1♂, MADAGASCAR: Fianarantsoa Province, 7 km West of Ranomafana, flight intercept-yellow pan trap under Malaise trap in montane rainforest, 900 m alt., 21°16'S, 47°25'E, 4−11.IX.1993, W. Steiner & S. Zack leg., CJDAF010111 (deposited in CNCI).

Description.

Holotype (Male). Head. Head in dorsal view much wider than long (2:1), slightly wider than width of mesosoma (9:8) (Fig. 13B, D); POL: 18; LOL: 10; OOL: 15 (Fig. 13D); ocelli large, LOL slightly shorter than diameter of lateral ocellus (5:6); vertex behind ocelli nearly flat in lateral view; eye large and without setae; inner orbits, frons and temple with few sparse setae; above antennal sockets, face and cheek with few long setae; antenna much shorter than body length (5:8); scape and pedicel with scattered setae; A3-A14 with dense and short setae; blade-like carina on A4 percurrent (Fig. 13C); antennal segments in following proportions (length:width): 20:6; 8:5; 14:6; 14:7; 8:6; 8:6; 8:6; 8:6; 8:6; 8:6; 8:6; 8:6; 8:6; 13:6 (Fig. 13C).

Mesosoma. Pronotum in dorsal view smooth to slightly rugose with whitish long setae; pronotal shoulders angled; upper part of lateral pronotum smooth, bare and broadly convex medially; lower part of lateral pronotum rugose with strong carina along anterior margin; mesoscutum smooth and convex with pairs of long setae in front of scutellar pit; notauli present anteriorly as large pits (Fig. 13E); humeral sulcus deep and long, much longer than length of tegula (19:12); scutellum smooth and slightly convex, straight lateral rims, posterior rim truncate with slightly prominent posterolateral corners (Fig. 13E); anterior scutellar pit large and deep, slightly shorter than remaining scutellar disc, slightly crenulate at bottom, median keel distinct (Fig. 13E); mesopleuron smooth with deep crenulate line along posterior margin; metapleuron reticulate and covered with dense whitish long setae.

Wings. Radial cell completely closed, 2.1 × as long as wide and 1.05 × as long as marginal vein (Fig. 13A).

Legs. Fore and mid legs slender; hind tibiae incrassate posteriorly, its maximum width slightly wider than hind femora (10:9).

Metasoma. Petiole short and expanded (4:5), with strong costae dorsally; tergites matte, with fine micropunctures; median furrow deep basally to shallow apically, extending half the length of second tergite; all sutures complete but weakly impressed.

Colour. Body black; mandibles brown with reddish tips; antennae dark brown except scape and pedicel yellow; tegulae brown; legs yellow except hind coxae and femora yellowish-brown, tibiae and tarsi brown; wings hyaline, covered with brown setae.

Measurements. Head length 0.51 mm, width 0.92 mm; mesosoma length 1.15 mm, width 0.82 mm; metasoma length 1.49 mm; fore wing length 2.86 mm; body length 3.15 mm.

Female. Unknown.

Distribution.

Madagascar.

Etymology.

This species is named after Warren Steiner, one of the collectors of the holotype specimen.