In the Old World, there are many bamboo-inhabiting phlaeothripine thrips mainly from the tropics and subtropics. Bamboosiella Ananthakrishnan and Podothrips Hood belonging to the subfamily Phlaeothripinae are well known genera in the East Asia. It is interesting that some of them are carnivorous and have the bodies bicolorous, usually the head, thorax and some of distal abdominal segments brown and the remaining abdominal segments yellow. In Korean peninsular, only two species, B. longiosanum Shin & Woo 1999 and P. sasa Okajima 1995, have been recorded from bamboo habitat. During the study of thysanopteran fauna, a newly recorded bamboo-inhabiting thrips P. odonaspicola (Kurosawa, 1937) is found from southern parts of Korea. The species have body bicolored brown and yellow, especially showing anteromedian brown marking on each of yellow abdominal segments II to V. It is known to occur under bamboo leaf sheaths and be a predator of Odonaspis secreatus Cockerell (Coccidae) in the temperate region (Okajima, 2006). In this study, taxonomic information on P. odonaspicola are presented with photos of specimens and the Korean bamboo-inhabiting thrips are briefly reviewed.

The genus Philostephanus Distant 1909 belongs to the family Miridae, including 23 species from the eastern Palearctic and the Oriental regions. They are characterized with a relatively large body, brown or fuscous coloration, rather symmetrical parameres of male genitalia, and unique structures of female genitalia. Especially, the respective structures of female genitalia exhibit distinct interspecific variation, which is uncommon in other genera of Miridae, so they are used as key characters in identification and phylogenetic study. Most of members are known to inhabit deciduous trees, and their feeding habits are considered predominantly predaceous although some species are known to use some deciduous trees as their breeding hosts (Yasunaga & Schwartz, 2007). Presently, two species are reported in the Korean fauna (Kwon et al., 2001). During our study, we found one newly recorded Philostephanus species from Korea, P. ulmi (Kerzhner 1979), which is distinguished from other Korean congeners by speckled hemelytra with pale portions. In this study, we provide taxonomic information on P. ulmi and review briefly the Korean Philostephanus species with morphological keys and photos of specimens.

Two species of Miridae, Pachylygus nigrescens (Kerzhner 1977) and Deraeocoris yasunagai Nakatani 1995, are reported for the first time from Korea. The brief information on them is presented with the photos of specimens.

Since Miyamoto & Lee (1966) first recorded three species of Miridae, many species including new species are added to the fauna of Korea by several Korean and foreign taxonomists (Josifov, 1992; Josifov & Kerzhner, 1972; Lee & Kwon, 1991; Lee et al., 1993; Lee et al., 1994). Kwon et al. (2001) collectively arranged the Korean fauna of Miridae into 7 subfamilies, 84 genera, and 209 species, but many species have been believed to remain unrecorded. During recent the recent study of Miridae, we found three unrecorded species, Apolygus roseofemoralis (Yasunaga 1992), Pachylygus nigrescens (Kerzhner 1977), Deraeocoris yasunagai Nakatani 1995. The brief information on them are presented with the photos of specimens. All specimens are deposited in NIAST.

Apolygus xanthomelas Yasunaga and Yasunaga 2000 is reported from Korea for the first time. It is larger than other congeneric species from Korea and has characteristic V-shaped pale parts on hemelytra surrounded by entirely black clavus and posterior triangular marks of corium. It is similar in overall appearance to the Chinese congeneric species, A. ornatus (Zheng and Wang 1983), but it can be distinguished by the vesica, which has a long needle-shaped spicule reaching the apex of median sclerite and ventral sclerite, a slender and weak wing-shaped sclerite and a small sublateral sclerite. This species also distributes in Japan, but the Japanese population is a little different from that of Korea in usually having a pair of dark spots on calli. In this study, the detailed information is given with some photos of the male and female genitalia.

The genus Haplothrips Amyot & Serville, 1843 is a very large genus with more than 200 described species in the world. Most of congeneric species are very similar to one another, and are sometimes difficult to distinguish. The genus is most frequently found among all phlaeothripine genera in Korea. Five species have been reported from Korea: H. aculeatus (Fabricius, 1803), H. brevitubus (Karny, 1913), H. ganglbaueri Schmutz, 1913, H. kurdjumovi Karny, 1913, H. niger (Osborn, 1883). The newly recorded species Haplothrips nipponicus is recently described from Japan (Honshu, Kyushu, Ryukyu Islands) by S. Okajima in 2006. The species is very similar to both of Korean species H. brevitubus and H. kurdjumovi in having sub basal wing setae b3 pointed at apex, but it can be easily distinguished by the sense-cone formula of the third antennal segment. Although the latter two species have only one sense-cone, H. nipponicus has two sense-cones on the segment. Moreover, these three species can be distinguished from one another by the shape of the male aedeagus whether it is apically rounded and laterally hardened or not. In this study, morphological characters for identification of H. nipponicus are described and figured. In addition, biological information about distribution and plant relationship is also presented.