Umairia Hayat

Hayat, Mohammad, 2014, Eutrichosomellini (Hymenoptera: Chalcidoidea: Aphelinidae) from India, with description of two new genera, Zootaxa 3821 (4), pp. 425-442 : 432-434

Umairia Hayat , gen. nov.

( Figs 16–35 , 44 )

Type species Umairia laiba Hayat , sp. nov.

Female. Head slightly flattened anteroposteriorly, subprognathous, width about 2× frontovertex width; ocellar triangle with apical angle obtuse; head, in frontal view ( Figs 16 , 28 ), slightly broader than high to slightly higher than broad; scrobes shallow or deep, if latter, then margins sharp; malar space straight, and with a fine sulcus; antennal torulus touching mouth margin; setae on head fine and short; occipital foramen located in upper third of occiput. Mandible ( Fig. 17 ) rudimentary, lobe-like, tips of the two mandibles widely separated and hidden by ventral, rounded extension of clypeus. Maxillary palp 2-segmented, labial palp unsegmented. Antennal formula 1131 ( Fig. 18 ); scape very slightly flattened, apically narrowed, and more than 3× as long as broad; pedicel longer than F1; funicle segments transverse; F1 with ventral side longer than dorsal side; F2 and F3 with dorsal sides longer than ventral sides; clava longer than funicle, and with apex slightly curved.

Mesosoma ( Fig. 19 ). Pronotum medially membranous, thus consisting of two plates; mesoscutum with notaular lines present in about anterior half only; axillae widely separated by a space greater than width of axilla; scutellum broader than long, with posterior margin rounded; median length of metanotum subequal to or slightly longer than median length of propodeum; mesopleuron large, rectangular; each axilla with 1 seta; scutellum with 4 setae; distance between posterior pair of scutellar setae greater than (2–3×) distance between anterior pair of setae. [Mesofurca ( Fig. 44 ) with lateral arms slightly bent backwards, and with anterior interfurcal arms present.] Fore wing ( Fig. 22 ) with costal cell slightly to distinctly longer than marginal vein; costal cell without setae on either dorsal or ventral surfaces; postmarginal vein absent; stigmal vein with a short neck, and stigma with 4 circular sensilla arranged in a curved line ( Fig. 23 ); parastigma short; linea calva broad, proximally bordered by 7–9 short setae arranged in two lines of 4 or 5 and 3 or 4 setae; disc below submarginal vein bare. Legs with tarsal formula 5–5–5; fore tibial spur curved and bifid at apex.

Metasoma. Gaster apically rounded; cercal plates situated near apex of gaster, each plate with 1 short, 1 moderately long and 2 long setae; ovipositor exserted ( Figs 21 , 35 ); hypopygium extending to level of cercal plates.

Male. Similar to female, but differs mainly in antennal structure and genitalia. Head as high as broad, with malar space slightly converging towards mouth margin ( Fig. 24 ). Antenna ( Fig. 25 ) with pedicel subtriangular, about as long as F1; F1 quadrate; F2 1.13× and F3 1.35× as long as broad; clava about as long as funicle. Genitalia ( Fig. 26 ) with phallobase short, anteriorly rounded; parameres short; digiti long, apex of each digitus with two short denticles; aedeagus long.

Comments. The similarity or relationship of the new genus with other genera of Eutrichosomellini is not very clear. The only similarity with Samariola Hayat and Zubairia Hayat , gen. nov. is that all these genera have the mandibles rudimentary, lobe-like, with the apices of the two mandibles widely separated. The subprognathous head, the broad frontovertex, and the incomplete notaular lines, separate this genus from all the other genera of Eutrichosomellini. These two characters may be autapomorphic for Umairia . See also key to genera. For character state matrix, see Table 1.

Etymology. The genus is named after my elder son, Mohammad Umair.

Figures

FIGURES 16 – 23. Umairia laiba Hayat, gen. et sp. nov. Female: 16, head, frontal view; 17, mandibles; 18, antenna; 19, mesosoma; 20, scutellum showing sculpture; 21, metasoma; 22, fore wing; 23, fore wing, distal venation.

FIGURES 24 – 26. Umairia laiba Hayat, gen. et sp. nov. Male: 24, head, frontal view; 25, antenna; 26, genitalia.

FIGURES 27 – 35. Umairia zeera Hayat, gen. et sp. nov. Female: 27, antenna; 28, head, frontal view; 29, head, frontal view, camera lucida drawing; 30, mandibles; 31, pronotum and mesoscutum; 32, mesosoma distal to mesoscutum; 33, fore wing; 34, fore wing, distal venation; 35, metasoma.

FIGURES 43 – 45. Mesofurca, females: 43, Eutrichosomella veenakumariae Hayat, sp. nov.; 44, Umairia laiba Hayat, gen. et sp. nov.; 45, Zubairia mirifica Hayat, gen. et sp. nov.