Heydenia gibsoni Sureshan, 2009

Kumar, Hemanth, Gupta, Ankita & Sharma, Adarsh, 2025, Description of a new species of Heydenia Förster, 1856 (Hymenoptera: Heydeniidae) from Southern India with two new distributional records, Zootaxa 5711 (1), pp. 93-113 : 104

Heydenia gibsoni Sureshan, 2009

( Figs 8B , 9E , 10 )

Heydenia gibsoni Sureshan, 2009:114‒116 .

Material examined. INDIA: Karnataka, Doddaballapura , 26.vi.2024, coll. Hemanth ( 3♀ on separate cards) ; Karnataka, Chikkaballapur, Gudibande , 19.vii.2024, coll. Hemanth ( 1♀ and 1♂ on separate cards) .

Diagnosis. FEMALE. Body length 2.6–4.2 mm; face with iridescent lanceolate setae ( Fig. 10A ); POL 2× OOL; gena reticulate with distinct smooth and shiny area below outer margin of eye ( Fig. 10C ), extending to vertex ( Fig. 10B ); antenna with clava subequal to combined length of preceding three segments ( Fig. 10C ); lateral panels of pronotum angled at about 90° to the dorsal surface ( Fig. 10D ) and with a punctate region as in Fig. 10E ; axillae uniformly reticulate ( Fig. 10D ); dorsellum smooth and shiny ( Fig. 10F ); propodeal plical region with distinct median carina and plicae forming well defined hexagonal area ( Fig. 10F ); profemur with ventral margin distally and protibia with dorsal margin having distinct spines ( Fig. 10G ); fore wing with basal cell bare, infuscation near STV narrow, almost triangular, and with a small spot below ( Fig. 10I ); metasoma with petiole wider than long, widening posteriorly ( Fig. 10H ), Gt 1 and Gt 2 with posterior margins distinctly incised medially ( Fig. 10J ); ovipositor sheath 1.6× length of metatibia ( Fig. 9E ).

MALE. Closely similar to female but body length 2.2–3.6 mm and POL 1.4× OOL.

Variation. POL 1.45–2.00× OOL (females).

Biology. Complete biology unknown. In the present study the specimens were reared from dead branch cuttings of Pongamia pinnata (L.) Pierre. ( Fabaceae ) and an undetermined tree.

Distribution. India ( Karnataka) (new record), Sri Lanka ( Sureshan 2009).

Figures

FIGURE 8. Live photographs of Heydenia species. A, Heydenia longipetiolata sp. nov.; B, Heydenia gibsoni Sureshan; C, Heydenia kashmirensis Sureshan & Khanday; D, Heydenia testacea Yang. Photo by: Hemanth Kumar H M.

FIGURE 9. Habitus of Heydenia species. A and B. Heydenia kashmirensis Sureshan & Khanday; C and D, Heydenia testacea Yang; E, Heydenia gibsoni Sureshan; F, Heydenia sp.

FIGURE 10. Heydenia gibsoni Sureshan (female).A, head, frontal; B, head, dorsal; C, head with antenna, lateral; D, mesosoma, dorsal; E, mesosoma, lateral; F, propodeum, dorsal; G, fore leg in part; H, petiole, dorsal; I, fore wing; J, metasoma with petiole, dorsal.