S. Mahunka szerk.: Folia Entomologica Hungarica 28/2. (Budapest, 1975)

ENTOMOLOGICA HUNGARICA ROVARTANI KÖZLEMÉNYEK (SERIES NOVA) !975 p. 263-268 Contribution to the knowledge of Zereonuiae Fauna from North Korea (Acari: Mesostigmata) Bj C. BLASZAK (Received 15 May, 1975) Abstract: Detailed description of Mesozercon coreanus BLASZAK and Metazer- con athiasi BLASZAK, and that of the genus Metazercon BLASZAK. In the material received from North Korea trough the courtesy of Dr. S. MAHUNKA I found the following species of the Zerconidae family: 1. Mesozercon coreanus BLASZAK, 1975 2. Metazercon athiasi BLASZAK, 1975 Mesozercon coreanus BLASZAK Until now, only a female was known (BLASZAK, 1975). In the material received I found a deutonymph belonging to this species. Deutonymph

: Length, 210 urn; width, 160 um. (Fig. 1) Setae: On the podonotum in row i, setae il and i2 long (16 jum), plumose. The remaining setae i3-i6 are short and smooth. In row z, seta zl short and smooth, setae z2 short and delicately plumose. In row s, only seta s3 long (16 urn) and delicately plumose, the remaining setae of this row short and delicately plumose, similar to seta z2. All the marginal setae of the podonotum are long (16 urn) and plumose. On the opistonotum in row I, setae 11-15 short and smooth. Setae 16 long and plumose and lie 30 yum away from one another. Setae of the row Z similar to adult stage characteristically arranged. Setae Z1-Z4 lie close to each other, short and delicately plumose. Seta Z4 lies on the line connecting the pair of setae F O L I A XXVIII. 2. Zoological Collectings of the Hungarian Natural History Museum in Korea. No. 26.