Trichrysis luzonica ( Mocsary , 1889)

Rosa, Paolo, Wei, Na-sen, Feng, Jun & Xu, Zai-fu, 2016, Revision of the genus Trichrysis Lichtenstein, 1876 from China, with description of three new species (Hymenoptera, Chrysididae), Deutsche Entomologische Zeitschrift 63 (1), pp. 109-136 : 120

Taxon classification Animalia Hymenoptera Chrysididae

Trichrysis luzonica ( Mocsary, 1889) Figs 43-48, 100

Chrysis (Trichrysis) luzonica Mocsáry, 1889: 328. Holotype, ♀, Philippines: Luzon (ISEA-PAN) (examined).

Chrysis (Trichrysis) bakeri Mocsáry, 1913c: 290. Holotype, ♂, Philippines: Luzon (HNHM) (examined) (synonymised by Kimsey and Bohart 1991: 572).

Trichrysis luzonica ( Mocsáry): Bohart 1987: 348; Kimsey and Bohart 1991: 572; Rosa et al. 2014: 76.

Material examined.

PHILIPPINES: ♀, Lucon / 275 / luzonica Moc <handwritten by Radoszkowski> / Holotypus Chrysis luzonica Mocsáry det. P. Rosa 2012 (ISEA-PAN); ♂, Los Baños Baker / Trichrysis bakeri Mocs det. Mocsáry typ. <handwritten in red> / Holotypus Chrysis bakeri Mocs. ♂ RM. Bohart / id nr. 135553 HNHM Hym. coll. (HNHM); 3♀♀1♂, Ins. Philipp. / Mt. Makiling Luzon Baker (HNHM).

Diagnosis.

Trichrysis luzonica ( Mocsáry, 1889) is similar to Trichrysis formosana ( Mocsáry, 1912), but can be separated from the latter by: median bridge of pit row straight, at most slightly depressed, subdividing pit row; TFC with weak branches.

Description.

Female. Body length 4.5-5.0 mm (Fig. 43).

Head. Scapal basin deep, striate medially. TFC single, slightly inverted V-shaped, with two weak dorsal branches upwards to ocellar area (Fig. 44). Relative length of P:F1:F2:F3=1.0:1.4:0.7:0.6; F1 l/w=2.5; OOL=1.5 MOD; BOL=2.0 MOD; POL=2.0 MOD; MS=0.8 MOD; clypeal apex slightly incised.

Mesosoma. Pronotal groove deep, extending to 3/4 length of pronotum; sublateral carina distinct and complete (Fig. 45). Episternal sulcus and scrobal sulcus with large foveae.

Metasoma. Dense punctuation on T1 and T2, with large geminate punctures. T2 with weak median carina. T3 prepit bulge slightly convex medially (Fig. 46). Pit row with relatively small pits equally interspaced (Fig. 47); in lateral view, median bridge of pit row straight to slightly depressed, dividing pit row in two parts. Apex of T3 with three teeth, lateral tooth sharper than median tooth (Fig. 47). Interval between median tooth and lateral tooth straight. S2 black spots suboval, fused medially (Fig. 100).

Colouration. Head and mesosoma metallic bluish-green to green, with golden reflections. Scape, pedicel and F1 metallic bluish-green to green, rest of flagellum black. Tegula fully metallic green. Legs metallic bluish-green, with tarsi brown. Metasoma metallic bluish-green to green, with anterior margins of T2 and T3 dark blue and posterior margin of T2 lighter green to golden-green.

Male. Body length 4.5-5.0 mm. Male differs from female as follows: body mostly darker coloured; vertex, pronotum, mesoscutum, T2 and T3 dark metallic bluish to black; teeth on apex of T3 shorter compared to female.

Distribution.

China (Taiwan?, Hong Kong?) ( Tsuneki 1970; Kimsey and Bohart 1991); Philippines ( Mocsáry 1889).

Remarks.

This species was reported for China (Hong Kong and Taiwan) by Kimsey and Bohart (1991). Nevertheless, their interpretation was confused with Trichrysis formosana ( Mocsáry), based on shape of T3 ( Bohart 1987). Mocsáry’s (1889) original description of T3 as follow: "tertio [segmento] convexo, supra seriem calloso, foveolis paucis, 6 tantum, magnis ac profundis rotundisque per carinulam medianam in spinam brevem acutam triangularem productam interruptis [...]" (third tergite convex, bulged on pre pit row, with six large, deep and round pits, medially interrupted by median carina extended to short, acute and triangular spine [= median tooth]). Therefore, no available records are currently known from China. However, it is possible that this species could be misidentified in collections and we here list and key it together with other Chinese species.