Trigastrotheca doiphukhaensis Raweearamwong, Quicke & Butcher, 2020

Raweearamwong, Marisa, Quicke, Donald L. J. & Butcher, Buntika A., 2020, A new species of Trigastrotheca Cameron (Hymenoptera: Braconidae: Braconinae) from Thailand, Zootaxa 4801 (1), pp. 179-184 : 180-183

publication ID	https://doi.org/ 10.11646/zootaxa.4801.1.10
publication LSID	lsid:zoobank.org:pub:1BB7588C-94BE-42CF-9557-FD3BC5CE5871
persistent identifier	https://treatment.plazi.org/id/42DEEA70-7496-433E-B846-8F4B25E4C779
taxon LSID	lsid:zoobank.org:act:42DEEA70-7496-433E-B846-8F4B25E4C779
treatment provided by	Plazi
scientific name	Trigastrotheca doiphukhaensis Raweearamwong, Quicke & Butcher
status	sp. nov.

Treatment

Trigastrotheca doiphukhaensis Raweearamwong, Quicke & Butcher , sp. nov.

( Figs 1 View FIGURE 1 , 2 View FIGURE 2 )

urn:lsid:zoobank.org:act:42DEEA70-7496-433E-B846-8F4B25E4C779

Material examined. HOLOTYPE female THAILAND, Nan province, Doi Phu Kha NP, 19° 12.164’ N, 101° 04.473’ E, 19.vi.2019, M. V. light trap, col. M. Raweearamwong ( CUMZ). National Park Permit: 0907.4/18722 GoogleMaps

Description. Holotype female. Length of body 3.9 mm, fore wing 3.8 mm, and ovipositor (part exserted beyond apex of metasoma) 1.5 mm.

Head. Antenna broken, at least 35 flagellomeres. First flagellomere 1.3 × longer than 2 nd and 3 rd. Width of head: width of face: height of eye = 2.6: 1.4: 1.0. Shortest distance between posterior ocelli: transverse diameter of posterior ocellus: shortest distance between posterior ocellus and eye = 1.5: 1.0: 3.0. Face and clypeus coriaceous with sparse setosity. Internal margin of eyes slightly emarginated. Face with weak mid-longitudinal ridge diverged from between antennal sockets and anterior tentorial pit. Malar suture weak. Occipital carina completely absent.

Mesosoma . Mesosoma 1.6 × longer than high, coriaceous, largely densely short setose. Notauli not impressed (but indicated by yellow lines. Scutellar sulcus shallow, narrow, finely crenulate. Median area of metanotum with weak complete mid-longitudinal ridge. Propodeum reticulate with long setae; midlongitudinal carina complete.

Wings. Fore wing. Lengths of fore wing veins r-rs: 3RSa: 3RSb = 1.0: 1.4: 4.8. Lengths of vein 2RS: 3RSa: rs-m = 1.2: 1.3: 1.0. Base of hind wing area vein cu-a hairless.

Legs. Lengths of fore femur: fore tibia: fore tarsus = 1.3: 1.0: 1.2. Lengths of hind femur: hind tibia: hind tarsus = 1.0: 1.1: 1.2. Claws with small acutely pointed basal lobe.

Metasoma. Lengths of first tergite 3.3 × shorter than its width (13: 43). Second tergite 1.1 x as long as third tergites (28: 26). First metasomal tergite coriaceous. Metasomal tergites 1-5 with coarse reticulate sculpture Second suture and basal grooves of tergites 4 and 5 deep, strigose. Lateral margin of 5 th tergite largely straight posteriorly, curved and denticulate anteriorly. Ovipositor sheaths approximately 0.9 × length hind femur (including trochantellus).

Colour. Antenna black. Head ochraceous yellow except for large piceous mark around stemmaticum and small spot on lateral face of antennal sockets. Mesosoma largely dark brown to black except pronotum, propleuron, lines of notauli narrowly, axillae, anterodorsal corner of mesopleuron, and narrow triangle area around precoxal sulcus ochreous yellow. Metasoma bicoloured: tergites largely black medially with white laterally, 1 st tergite white anteriorly, 5th tergite white posteriorly. Wings hyaline with dark brown venation; pterostigma brown or black. Fore legs ochreous yellow, middle legs yellowish ivory except for posterior part of femur, tibia and tarsus brown or black. Hind legs entirely black.

Distribution. Doi Phu Kha NP. ( Thailand)

Host. Unknown

Etymology. Named after type locality.

Diagnosis. Trigastrotheca doiphukhaensis n. sp. falters at the first couplet in the key to South East Asian species by Quicke et al. (2017) in that whilst being heavily marked with black as in T. tridentata , the occiput is yellow rather than black. It can be differentiated from T. tridentata using the following key:

1 Face largely dark brown ( Fig. 3A View FIGURE 3 ); occiput black ( Fig. 3C View FIGURE 3 ), lateral margins of metasomal tergites 3-5 largely black ( Fig. 3D View FIGURE 3 ); fifth metasomal tergite black only on small antero-medial part, yellow posteriorly ( Fig. 3F View FIGURE 3 ); posterolateral margin of fifth metasomal tergite concave ( Fig. 3F View FIGURE 3 ); ovipositor longer than metasoma length....................... T. tridentata (Enderlein)

- Face entirely yellow ( Figs. 1B, C View FIGURE 1 ); occiput yellow, the black mark surrounding stemmaticum narrowing to a point posteriorly ( Fig. 1D View FIGURE 1 ); lateral margins of all metasomal tergites white ( Figs. 2B, E View FIGURE 2 ); fifth metasomal tergite largely black with only narrow white lateral and posterior borde ( Fig. 2D View FIGURE 2 ); posterolateral margin of fifth metasomal tergite less concave or straight ( Fig. 2E View FIGURE 2 ); ovipositor shorter than or equal length of metasoma..................................... T. doiphukhaensis sp. nov.

Comment. The difference in tone of the pale marks on the metasoma between T. tridentata (yellowish) and T. doiphukhaensis sp. nov. (white) appears to be genuine but we cannot exclude the possibility that the holotype has discoloured somewhat since it is more than 100 years old.