Planispectrum hongkongense

Appearance

With length about 30 millimetres, the females of "Planispectrum hongkongense" are among the larger representatives of the genus. Due to the laterally flattened abdomen, which is significantly wider than the thorax, the species is considered easy to identify. It can be distinguished from the closely related "Planispectrum hainanense" by the hairless legs, which have their middle and hind femurs only slightly widened fin-like lamellae on the front and rear area. The ones from "P. hainanense" are clearly fin-like there and with short brownish setae at the legs. The anal segment of "P. honkongense" is slightly emarginate, that of "P. hainanensis" is strongly emarginate. The 3.7 millimetres long head is significantly longer than wide. The supra antennals located there are pointed and connected to the interorbitals by a raised crest. The three pre occipitals become larger towards the rear. The posterior occipitals are prominent. The lateral coronals are clearly visible. The antennae consist of about 20 segments, some of which are indistinctly separated from one another. Of the 30 millimetres total length, the pronotum accounts for 2.7 millimetres, the mesonotum 5.8 millimetres, the metanotum 2.8 millimetres and the median segment 1.8 millimetres. The first to fourth abdominal segments increasingly wide. The fourth segment is the widest. The fifth segment has the width of the third. The sixth to tenth segments increasingly narrow.

Distribution

Oliver Zompro described "Planispectrum hongkongense" in 2004 together with two other "Planispectrum" species using a female and an egg taken from this. The female, which like the egg is in the collection of the Natural History Museum of Geneva, was declared the holotype. It was collected on December 2, 1988 by B. Hauser at an altitude of 180 to 380 metres and is from the Tai Mo Shan Country Park. The species name refers to where the specimen was found. In addition to the holotype, another female is mentioned, which was photographed in the collection of the University of Hong Kong without location information. George Ho Wai-Chun examined further eleven females and nine eggs. These were mostly collected by himself between 2006 and 2013 in Southern District and Tai Po District, Sha Tin District, Sai Kung District and Islands District.