Euagathis setosimaculata van Achterberg & Sharkey, 2014

van Achterberg, Cornelis, Sharkey, Michael J. & Chapman, Eric G., 2014, Revision of the genus Euagathis Szepligeti (Hymenoptera, Braconidae, Agathidinae) from Thailand, with description of three new species, Journal of Hymenoptera Research 36, pp. 1-25 : 17-19

Euagathis setosimaculata van Achterberg & Sharkey sp. n.

Type material.

Holotype, ♀ (QSBG), " Thailand: Phetchabun, Thung Salaeng Luang N. P., Kaeng Wang Nam Yen, 16°36.587'N, 100°53.395'E, Malaise trap, 22-26.xi.2006 (H138; T1160). For a distribution map, see Appendix.

Diagnosis.

This new species keys to Euagathis abbotti (Ashmead, 1900) from the Sunda area, Thailand, Laos and Vietnam in the key by Simbolotti and van Achterberg (1995). Females of both species have the third and fourth segments of the fore tarsus slender, vein 1-R1 of fore wing somewhat darker than the pterostigma, the precoxal sulcus comparatively narrow, the mesoscutum distinctly punctate and the scapus yellow. Euagathis setosimaculata sp. n. differs by having the dorsal face of the propodeum much shorter than its posterior face (about as long as posterior face in Euagathis abbotti ); the hind femur about 4 times as long as wide (5-6 times); the area near vein cu-a of the hind wing glabrous (sparsely setose); vein cu-a of hind wing about as long as wide (distinctly longer than wide).

Description.

Holotype, ♀, length of body 7.2 mm, of fore wing 7.5 mm, of ovipositor sheath 0.6 mm.

Head. Antennal segments 48, length of third segment 1.1 times fourth segment, length of third, fourth and penultimate segments 3.1, 2.8 and 1.2 times their width, respectively; apical antennal segment 1.8 times as long as penultimate segment; maxillary palp 0.6 times height of head; malar space 2.7 times as long as basal width of mandible; length of eye 1.8 times temple; temple directly narrowed posteriorly and slightly concave laterally ( Fig. 12c ); POL:OD:OOL = 12:10:21; face shiny with shallow medial groove dorsally, punctulate and short densely setose; frons, vertex and temple shiny and smooth ( Fig. 12c ); temple concave near lower level of eye.

Mesosoma. Length of mesosoma 1.5 times its height; pronotum smooth, but setose and punctulate dorsally and moderately crenulate posteriorly; area near lateral carina of mesoscutum finely crenulate; mesoscutum shiny, with spaced and rather coarse punctures and lateral lobes distinctly convex posteriorly ( Fig. 12f ); notauli complete, crenulate, but posterior third mainly smooth; scutellum slightly convex and densely coarsely punctate, antero-dorsal margin angulate and with transverse carina; precoxal sulcus complete and anterior crenulae comparatively short ( Fig. 12e ); mesopleuron below precoxal sulcus and metapleuron medially coarsely punctate with interspaces about equal to diameter of punctures; propodeum coarsely areolate and partly rugose, moderately setose, anterior face much shorter than its posterior face.

Wings. Fore wing: second submarginal cell pentagonal and without ramellus ( Fig. 12b ); vein SR1 straight; r:3-SR:SR1 = 4:2:88; vein 2-R1 0.3 times as long as 1-R1; vein cu-a interstitial; with stigmal spot. Hind wing: vein M+CU 2.9 times as long as vein 1-M; area near vein cu-a setose; vein cu-a about as long as wide.

Legs. Length of hind femur, tibia and basitarsus 3.9, 7.3 and 8.4 times their width, respectively; hind femur reticulate-rugose ventrally; setae of middle tarsus shorter than width of tarsal segments; fore and middle tarsal segments moderately slender; length of outer and inner spur of middle tibia 0.5 and 0.7 times middle basitarsus, respectively; outer side of middle tibia without pegs, except for 2 apical pegs; length of outer and inner spur of hind tibia 0.25 and 0.55 times hind basitarsus.

Metasoma. First tergite twice as long as wide apically, gradually widened apically, without dorsal carinae and smooth ( Fig. 12h ); second metasomal suture absent; ovipositor sheath 0.08 times as long as fore wing, truncate apically and widened.

Colour. Black; head, scapus and pedicellus, palpi, mesosoma (but mesopleuron, mesosternum, metapleuron, propodeum and hind coxa black), fore and middle legs yellow; nota of first and second tergites, third tergite (but antero-laterally yellow) and following segments black or dark brown; hind trochanter and femur ventrally, apex and outer side of hind tibia (except basally) and hind tarsus dark brown; pterostigma and veins yellow, but vein 1-R1 infuscate; wing membrane yellowish, but apically brownish ( Fig. 12b ); apex of ovipositor sheath brown and remainder black.

Distribution.

Known only from Thailand. For map showing the locality of the sole specimen, see Appendix.

Molecular data.

Genbank accession numbers: KC899843 (COI); KC867253 (28S).

Etymology.

From “setosus” (Latin for “bristly”) and “macula” (Latin for "spot, mark") because of the setose base of the hind wing and the partly black body.

Figures

Figure 12. Euagathis setosimaculata sp. n., female, holotype. A lateral habitus B wings C dorsal head D lateral head E lateral mesosoma F dorsal thorax G propodeum H dorsal metasomal terga 1 - 2.