Ismarus kenyensis, 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 : 140-142

Ismarus kenyensis sp. n. Figure 6A− E

Diagnosis.

Ismarus kenyensis sp. n. is similar to I. minutus sp. n. It differs mainly in the antennal segments A1/A3/A4 ratio, radial cell/marginal vein ratio and length of median longitudinal furrow on T2: in I. minutus sp. n. A1 much longer than A3 and A4, radial cell shorter than half length of marginal vein, T2 with median furrow extending to 0.10 × of segment; in I. kenyensis sp. n., A1 slightly longer than A3 and equal length to A4, radial cell longer than half length of marginal vein, T2 with median furrow extending to ⅓ of segment.

Type material

(1♀). Holotype, 1♀, KENYA: Eastern Province, Nyambene Hills, Itieni Forest at bottom, edge of indigenous forest, near forest station, 2,142 m alt., 0.24433°N, 37.87016°E, 18.IX−2.X.2011, R. Copeland leg., CJDAF010081 (deposited in NMK).

Description.

Holotype (Female). Head. Head in dorsal view much wider than long (7:4), slightly wider than width of mesosoma (6:5) (Fig. 6 B–C); POL: 11; LOL: 6; OOL: 9 (Fig. 6B); ocelli large, LOL slightly longer than diameter of lateral ocellus (6:5); 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 slightly shorter than body length (7:8); scape and pedicel with scattered setae; A3-A15 with dense and short setae; antennal segments in following proportions (length:width): 12:4; 7:3; 10:1.5; 12:2; 9:2.5; 7:2.5; 6:3; 6:3; 5:3; 5:3; 5:3; 5:3; 5:3; 5:3; 9:3 (Fig. 6D).

Mesosoma. Pronotum in dorsal view rugose with whitish long setae; lateral pronotum predominantly rugose-punctate except smooth and concave in the middle; mesoscutum smooth and convex; notauli present with 4 small pits on anterior margin (Fig. 6E); humeral sulcus deep and long, much longer than length of tegula (12:7); anterior scutellar pit small and deep, much shorter than remaining scutellar disc, distinctly crenulate at bottom, median keel absent; scutellum smooth and slightly convex, posterior rim rounded (Fig. 6E); mesopleuron smooth with deep crenulate line along posterior margin (Fig. 6E); metapleuron rugose and covered with dense whitish long setae.

Wings. Radial cell completely closed, 1.8 × as long as wide and 0.6 × as long as marginal vein (Fig. 6A).

Legs. Fore and mid legs slender; hind tibiae incrassate posteriorly, its maximum width slightly wider than hind femora (14:11).

Metasoma. Petiole slightly longer than width (6:5), with strong costae dorsally; tergites smooth, with scattered setigerous punctures; base of second tergite with several short costae basally and short median furrow, 0.33 × length of second; suture between T2 and T3 obsolete, following sutures complete and deeply impressed.

Colour. Head and mesosoma dark brown except antennae yellow with A12-A15 brown, tegulae brown, legs yellow with hind coxae and femora brown; metasoma brown except petiole dark brown; wings hyaline, covered with brown setae.

Measurements. Head length 0.34 mm, width 0.57 mm; mesosoma length 0.72 mm, width 0.49 mm; metasoma length 0.90 mm; fore wing length 1.86 mm; body length 1.96 mm.

Male. Unknown.

Distribution.

Kenya.

Etymology.

The species is named after the type locality.