5a. Ctenotilla guangdongensis Lelej, 1992

(Figs 4, 48–51)

Ctenotilla guangdongensis Lelej, 1992: 282; Lelej 2005: 34; Okayasu et al. 2018: 308.

Diagnosis. FEMALE. This species can be most easily separated from other Ctenotilla by having the apical T2 band of silvery setae medially divided by black setae. Other useful characters were listed by Lelej (1992). Body length 5.5–8.5 mm. MALE. To be described in an upcoming paper.

Material examined. Type material. CHINA, Guangdong, Chebaling, 21.VI.1990, A.S. Lelej (1♀ Paratype IBSS). Other material (26 ♀) . LAOS, Ban Houaykong, 18–30.IV.1999, O. Šauša (1♂ IBSS); Bolikhamsay Province, Ban Phone Kham environs, 200–300 m, 18 o 19'N 104 o 0 8'E, 23–29.V.2011, M. Brancucci, M. Geiser, D.

Hauck, Z. Kraus, A. Phantala, and E. Vongphachan (2♀ RHMB). THAILAND: Chiang Mai, Chiang Mai Botanical Garden, QSBG, 18.8955 o N 98.8636 o E, Malaise trap, 11–25.VII.2013, M. Hauser (1♀ 1♂ in copula CSCA); Omkoi District, Dry dipterocarp forest, 17°50′49.9″N 98°22′33.0″, 950–1010 m alt.: 8.VI.2017, R. Mizuno (1♀ EUM) ; 19.VI.2017, R. (1♀ EUM); 20.VI.2017, R. Mizuno (1♀ EUM); Kanchanaburi, Thong Pha Phum, Vimarndin farm stay, 14.655 o N 98.521 o E, 200 m, 17–20.V.2018, MKT (17♀ 1♂ CSCA EMUS MIUP PSUC QSBG); Loei, 50 km SW Loei, 1000 m, 17 o 20'N 101 o 20'E, 14.VIII.1986, R. Hensen (1♀ RMNH); Phetchaburi, Kaeng Krachan, Baan Maka Nature Lodge, 12.840 o N 99.590 o E, 140 m: 16.V.2018, MKT (1♀ CSCA).

Distribution. Cambodia *, China (Guangdong), Thailand (Chiang Mai, Kanchanaburi, Loei, Phetchaburi), Vietnam *, and Laos *.

Remarks. In Lelej’s (2005) catalog, this species was known from China and Thailand only, but according to comments by B. Petersen, the putative male for this species was also found in Laos, Cambodia, Vietnam, and Thailand. Our examination of females of C. guangdongensis from Cambodia and Vietnam supports Petersen’s hypothesis. We aim to describe this male in an upcoming treatment of males from Thailand.