The solitary wasp genus
In this paper, based on specimens deposited in the Institute of Ecology and Biological Resources (IEBR), one species of the genus
The material examined in the present study is deposited in the collections of the IEBR.
The adult morphological and color characters were observed on pinned and dried specimens under a stereoscopic microscope. Measurements of body parts were made with an ocular micrometer attached to a stereoscopic microscope. “Body length” indicates the lengths of head, mesosoma and the first two metasomal segments combined. Terminology follows Yamane (1990). Photographic images were made with the Canon PowerShot SX1 IS, Japan and the Leica EZ4HD 3.0 MegaPixel Digital Stereo Microscope, Germany, using LAS exclusive microscopy software (LAS EZ 2.0.0); the images were further processed with Photoshop CS6, mostly to adjust the size and background.
Collector is abbreviated as follows: IED-c, staff of the Insect Ecology Department; ISD-c, staff of the Insect Systematic Department (IEBR). “NP” stands for National Park.
[Fig. 1.] Phimenes flavopictus (Blanchard). Female: A, Head in frontal view; B, Metasomal segment I and II in lateral view; C, TI in dorsal view. Male: D, Head in frontal view; E, Right antenna; F, Female habitus.
Kumar (2013: 120) synonymized
This species has been recorded from India, Sri Lanka, Nepal, China, Myanmar, Thailand, Malaysia, Singapore and Indonesia (Carpenter, unpublished). In Vietnam, the species was recorded from several provinces in the northern part of the country such as Lao Cai, Bac Kan, Ha Noi, Thai Nguyen, Tuyen Quang, Vinh Phuc, Bac Giang, Thanh Hoa, and Kien Giang by van der Vecht (1959) and Nguyen et al. (2014), and is recorded from Ha Giang, Cao Bang, Son La, Phu Tho, Hoa Binh, Hai Phong, Ninh Binh, Nghe An, Ha Tinh, Quang Binh, Quang Tri, Quang Nam, Gia Lai, and Dak Lak as new records for the areas in the present study.
[Fig. 2.] Phimenes indosinensis (van der Vecht). Female: A, Head in frontal view; B, Metasomal segment I and II in lateral view; C, TI in dorsal view. Male: D, Head in frontal view; E, Left antenna; F, Female habitus.
Mesosoma short, longer than wide in dorsal view. Pronotal carina absent medially, pretegular carina present on pronotum. Mesoscutum weakly convex, slightly longer than wide between tegulae; anterior margin broadly rounded. Scutellum weakly convex. Metanotum weakly convex, slope down to apical margin. Propodeum without fovea, depress in the middle, border between dorsal and lateral surfaces round at dorsal part and bluntly angulated at posterior part.
Metasomal segment I petiolate (Fig. 2B), tergum I long, about 5.5 times as long as wide, gradually expand from base to apical margin (Fig. 2C); tergum II in dorsal view about 1.4 times as long as wide, in lateral view dorsally gradually convex basally then nearly flat apically; sternum II nearly flat at base, then gradually convex ventrally to apical margin (Fig. 2B).
Body covered with short, silver hairs except frons, vertex behind ocelli, apical margin of scutellum, metanotum and propodeum with long dense silver hairs.
Clypeus with sparse and small punctures, each bearing a silver bristle, many minutes punctures in between small punctures. Mandible with a longitudinal row of mediumsized punctures near inner side, and several sparse and small punctures. Frons densely covered with very coarse and flat bottom punctures, interspaces strongly raised to form reticulation. Vertex and gena with sparse, deep and large punctures. Pronotum with punctures coarser than those on the frons, interspaces strongly raised to form reticulation. Basal half of mesocutum similar to those on the frons, apical half densely and coarsely covered with flat-bottomed punctures, interspaces smooth and not raises, in several part interspaces greater than puncture diameter; punctures on scutellum and metanotum sparser and coarser than those on mesoscutum. Mesepisternum with dense, coarse, well-defined punctures posterodorsally, barely punctured anteroventrally; border between posterodorsal and anteroventral parts indistinct. Dorsal metapleuron with several small and shallow punctures, ventral metapleuron smooth. Propodeum with punctures on dorsal parts similar to those on mesopleuron, lateral surface with shallow, sparse, small punctures near border between dorsal and lateral, the other parts smooth. Metasomal terga covered with minute punctures, punctures on sternum II and III sparse and shallow, punctures on sternum IV-VI denser and deeper.
Color. Black except narrow line on inner eye margin and short narrow band on gena just behind eye yellow; antennal flagellomeres beneath and propodeal valvulae reddishbrown.
Male: Body length about 18 mm; forewing length about 16 mm.
Structure as in female, but differing as follows: head proportionally smaller, transverse, about 1.2 times as wide as high in frontal view (Fig. 2D); eye strongly swollen laterally; inner eye margins strongly convergent, about 1.35 times further apart from each other at vertex than at clypeus; gena very narrow, in lateral view about 0.3 times as wide as eye; clypeus in frontal view higher than wide, about 1.4 times as high as wide, apical margin emarginate medially, forming a blunt tooth on each lateral side (Fig. 2D); width of the emargination slightly more than half width of clypeus between inner eye margins; in lateral view slightly convex from base to apical margin; mandible with four prominent teeth. Antennal scape shorter than in female, about 3.5 times as long as its maximum width; flagellomere I about 3.5 times as long as wide, flagellomere II-V longer than wide, flagellomeres VI about as wide as long, flagellomeres VII-IX wider than long, flagellomere X small, terminal flagellomere elongate, strongly curved, sharply pointed apically and the apex received at basal margin of F8, about 3.5 times as long as its basal width (Fig. 2E).
Body surface sculpture as in female.
Color. Similar to female, but clypeus black with thick longitudinal yellow band at the middle (Fig. 2D), and large yellow spot between antennae. Terminal antennal flagellomere with reddish-brown longitudinal band occupying almost all the segment. Legs reddish-brown.
The characters are applicable to both sexes unless the sex is specified.