Etrocorema nigrogeniculatum (Enderlein)

Ochthopetina nigrogeniculata Enderlein, 1909:400 . Lectotype ♂, Malaysia

Etrocorema ahenobarba Klapálek, 1909:222 . Holotype ♂, Camp Jor, Malaysia. Syn. Klapálek, 1923

Euryplax ochrostoma Klapálek, 1909:225 . Holotype ♀, Malaysia. Syn. Zwick, 1982b

Neoperla modiglianina Navas, 1932:952 . Holotype ♀, SiRambé, Sumatra. Syn. Zwick, 1982a

Neoperla nangina Navas, 1929:80 . Holotype ♂, Nanga Obat, Borneo. Syn. Zwick, 1986a

Material examined. Indonesia: East Kalimantan, Kayan‐ Mentarang Nature Reserve, Lalut Birai, 2° 52’ N, 115° 49’ E, 378 m, 28 March‐16 April 1994, IIS 940507, B. Hubley, D.C. Darling, 1 ♂, 4 ♀ pinned (MZB, ROM) .

Remarks. Zwick (1982a, b) reported this species from Sumatra and Borneo (Sabah) respectively, Zwick & Sivec (1985) gave additional Sumatran records, and Zwick (1986a) placed N. nangina, a species named from Borneo, as a synonym of this species. The Sabah female studied by Zwick (1982b) is reported to be “…dark and very large, the wing is 26 mm long”, whereas the females in this sample, also quite dark, have 16‐17 mm forewing lengths. Unfortunately no eggs could be extracted from these pinned specimens, but the internal and external male genitalia are consistent with specimens from the Asian mainland except for the atypical absence of anterior sclerite development along the median line of tergum 9.