A new parasitoid of Bazaria turensis (Lepidoptera, Pyralidae): Campoplex bazariae sp. n. (Hymenoptera, Ichneumonidae)

Abstract A new solitary endoparasitoid of the larva of Bazaria turensis Ragonot, 1887 (Lepidoptera, Pyralidae) in Qinghai province, China, Campoplex bazariae Sheng, sp. n., belonging to the subfamily Campopleginae (Hymenoptera, Ichneumonidae), is reported. Illustrations of the new species are provided.

The hosts of Campoplex Gravenhorst mainly belong to Coleophoridae, Gelechiidae, Pyralidae, Tortricidae, Yponomeutidae, etc. (Aubert 1983, Horstmann 1980, 1985, Kusigemati 1987, Shaw and Aeschlimann 1994, Yu et al. 2012. In the last five years the authors have been exploring Qinghai Province, Ningxia Hui Autonomous Region and Inner Mongolia Autonomous Region, situated in northwestern China, and have collected large numbers of ichneumonids. In this article, one new species of Campoplex is reported, reared from the larva of Bazaria turensis Ragonot, 1887 (Lepidoptera, Pyralidae), from Qinghai Province, P.R. China.

Materials and methods
Mature larvae of the host, Bazaria turensis, were collected on 28 August 2013 by Mao-Ling Sheng. Cocoons of the host were collected on 21 May 2014 by Yan-Ling Zhang, from a forest where there had been an outbreak lasting at least three years, and brought to the laboratory. The forest is located in Dulan County, Qinghai Province. The forest is a shrubbery composed of Nitraria tangutorum Bobrov, Lycium chinense Miller var. potaninii (Pojarkova) A.M. Lu and Kalidium foliatum (Pallas) Moquin-Tandon. Mature larvae were maintained in a nylon cage at room temperature. The pupae were stored individually in glass tubes with a piece of filter paper dipped in distilled water to maintain moisture and plugged tightly with absorbent cotton. Glass tubes are 60 mm long and 6 mm diameter. After the emergence of moths and parasitoids was complete, all remaining pupae were dissected to record their condition (i.e. status of moths, and parasitism).
Specimens were compared with material from the Natural History Museum (NHM), London, UK. Morphological terminology is mostly based on Gauld (1991).
Images of whole insects were taken using a CANON Power Shot A650 IS. Other images were taken using a Cool SNAP MPS Color attached to a Zeiss Discovery V8 Stereomicroscope and captured with QCapture Pro 7.
Type specimens are deposited in the Insect Museum, General Station of Forest Pest Management (GSFPM), State Forestry Administration, People's Republic of China.

Diagnosis.
Eye slightly or not at all emarginate opposite antennal socket. Occipital carina joining hypostomal carina above base of mandible, or reaching directly to base of mandible. Area superomedia and area petiolaris confluent, junction between them usually discernible, combined area moderately wide. Area dentipara completely bordered by carinae. Apex of propodeum usually not reaching middle of hind coxa. Areolet usually present. 2m-cu inclivous. Basal portion of first tergite subcylindric and less than 3.0× as long as deep, suture between tergite and sternite approximately at or a little below mid-height. Apex of male gonosquama rounded above or with a very shallow emargination. Ovipositor sheath about 3-4× as long as apical depth of metasoma. Diagnosis. Face finely coriaceous, with dense punctures. Interocellar area with distinct punctures. Postocellar line 1.6-1.7× as long as ocular-ocellar line. Postscutellum with fine dense distinct punctures. First tergite from base to apex strongly evenly convex, smooth, shiny. Second and subsequent tergites finely coriaceous. Apical margins of tergites 6 and 7 with deep median triangular emarginations. Ovipositor slightly, evenly curved upwards. Head except mandibles and maxillary and labial palpi, mesosoma and all tergites entirely black.
Metasoma. First tergite (Fig. 8) approximately 2.9 times as long as apical width, basal portion subcylindric, suture separating from sternite lying at mid height of segment; from base to apex strongly, evenly convex; smooth, shiny. Spiracle located about at apical 0.4 of first tergite. Second and subsequent tergites finely coriaceous. Second tergite (Fig.  9) 1.25-1.43× as long as apical width. Third and following tergites compressed. Apical margins of tergites 6 and 7 with deep median triangular emarginations. Ovipositor sheath approximately 1.25× as long as hind tibia, 0.65-0.75× as long as total length of posterior seven tergites. Ovipositor slightly curved upwards, with distinct subapical dorsal notch. Color (Fig. 1). Black, except the following. Maxillary and labial palpi blackish brown. Median portions of mandibles dark brown, or upper-median margins yellowish brown. Tegula stramineous. All coxae and trochanters, except brownish apical margins of fore trochanter, black. Fore femur, dorsal profiles and ventral apical portions of mid and hind femora reddish brown. Basal ventral halves or more of mid and hind femora, apical portion of hind femur black. Fore and mid tibiae, except outsides slightly yellowish, and tarsi brown to dark brown. Ventral side of hind tibia reddish brown, dorsal side and tarsus dark brown. Second, lateral margin of third and apical margins of fourth to sixth sternites grayish yellow to off-white. Median portion of pterostigma dark brown. Veins brownish black.
Male. Body length 8.0-8.2 mm. Fore wing length approximately 6.0 mm. Median portion of frons with dense transverse wrinkles. Apex of gonosquama more or less horny. Median portion of mandible reddish brown. Tegula yellow, median portion asymmetrically blackish brown. Mid and hind tarsi dark brown.
Biology. Campoplex bazariae Sheng is a solitary endoparasitoid of the larva of Bazaria turensis, spinning its cocoon in deciduous leaves (Fig. 10a) or near the surface of soil (Fig. 10b); also in the cocoon of B. turensis, collected and reared by the local colleague, Yan-Ling Zhang (Director of Forestry Pest Control and Quarantine Station of Dulan, Qinghai, China).
Remarks. This new species is similar to C. ovatus (Brischke, 1880) and can be distinguished from the latter by the following combination of characters: petiole of areolet (Fig. 6) 0.7-0.9× as long as 2rs-m; area superomedia smooth, shiny, flat, costula connecting at its middle; area petiolaris almost flat; second tergite approximately 1.25-1.43× as long as apical width; posterior portions of tergites 6 and 7 with deep median triangular emarginations; apical portions and basal ventral halves or more of hind femora black; ventral profiles of hind tibiae reddish brown, dorsal profiles darkish brown; median portion of pterostigma darkish brown. Campoplex ovatus (Figs 11, 12) (NHM): petiole of areolet approximately 0.5× as long as 2rs-m; area superomedia rough, costula connecting at its anterior 0.3; confluent areas superomedia and petiolaris distinctly longitudinally concave; second tergite as long as or slightly longer than apical width; posterior margins of tergites 6 and 7 truncate; hind femora and tibiae entirely reddish brown; pterostigma brown.
Science and Technology Support Program of China (Grant No. 2012BAD19B0701) and the National Natural Science Foundation of China (NSFC, No. 31070585, No. 31310103033).