Trigastrotheca khaoyaiensis Quicke & Butcher sp. nov.

Figs 19, 20

Type material.

Holotype ♀, Thailand, Nakhon Ratchasima, Khao Yai National Park, 17. vi. 2022, 14 ° 26.016 ' N, 101 ° 22.153 ' E, Malaise trap 3, coll. B. Butcher (CUMZ). Paratype. 1 ♀, same data as holotype except 27. iv. 2022 (CUMZ).

Diagnosis.

Tricolourous black, yellow, and white, with the face entirely yellow except for dark spot on outer margin of antennal socket. Similar to T. khaoyaiensis sp. nov. but differing in having the median lobe of T 5 far more acute (Fig. 20 B cf. Fig. 22 D), the black raised median part of the T 5 being shorter and wider with the posterior white margin relatively larger.

Description.

Holotype female. Length of body 6.1 mm, fore wing 4.5 mm. Head. Antenna with 44 flagellomeres. Terminal flagellomere acuminate. First flagellomere 1.1 × longer than 2 nd and 3 rd, the latter 1.2 × longer than wide. Width of head: width of face: height of eye = 2.4: 1.3: 1.0. Face transversely striate-rugose; with distinct mid-longitudinal ridge. Inter-tentorial distance 1.6 × longer than tentorio-ocular distance. Malar suture impressed. Malar space 1.5 × as long as basal width of mandible. Antennal sockets strongly produced. Frons faintly rugose, strongly impressed behind antennal sockets, with mid-longitudinal carina. Shortest distance between posterior ocelli: transverse diameter of posterior ocellus: shortest distance between posterior ocellus and eye = 1.0: 1.0: 2.2. Mesosoma 1.5 × longer than high. Mesoscutum granulate-rugose; notauli not impressed except very short anterior part with few weak crenulations, very shallow posteriorly. Scutellar sulcus shallow, narrow, finely crenulate. Scutellum granulate without small pit medially behind sulcus. Median area of metanotum with complete mid-longitudinal carina. Propodeum granulate; mid-longitudinal carina complete, lamelliform, bordered narrowly by fine crenulations; posteriorly propodeum with short longitudinal carinae associated with longitudinal wrinkles. Wings. Fore wing. Lengths of fore wing veins r-rs: 3 RSa: 3 RSb = 1.0: 1.5: 4.5. Lengths of vein 2 RS: 3 RSa: rs-m = 1.2: 1.5: 1.0. Base of hind wing glabrous. Legs. Lengths of fore femur: fore tibia: fore tarsus = 1.0: 1.1: 1.1. Lengths of hind femur: hind tibia: hind tarsus = 1.0: 1.2: 1.3. Claws with small acutely pointed basal lobe. Metasoma. T 1 1.5 × wider than long. T 2 0.9 × as long as T 3. T 1 coriaceous. TT 1–5 with coarse reticulate sculpture. Second metasomal suture and basal grooves of TT 4 and 5 deep, strigose. T 5 with postero-lateral margin of convex, distinctly, evenly denticulate; medial protuberance acutely rounded posteriorly; postero-lateral emarginations defined. Coloration. Body black except face, clypeus, malar space, mandible except apex, maxillary and labial palps, temple, frons and vertex laterally, occiput ventrally, pronotum, propleuron, mesoscutum antero-laterally, submedially and posteriorly, scutellum laterally and posteriorly, mesopleuron anteriorly and posteriorly, metapleuron anteriorly, fore leg, mid coxa ventrally, mid femur except ventrally, mid tibia basally, hind trochanter, hind tibia basally yellow, T 1 except medially, T 2 except medially and posteriorly, metasoma laterally, T 5 posterior 1 / 2 ivory white.

Male. Unknown.

Distribution.

Oriental (Thailand).

Host.

Unknown.

Etymology.

Named after Khao Yai National Park Thailand where the type material was collected.