Kovács I. (szerk.): A Magyar Természettudományi Múzeum évkönyve 78. (Budapest 1986)

Steinmann, H.: Isolabis frater sp. n. (Dermaptera, Carcinophoridae) from Venezuela

elongate, with specific sclerotized plate basally; external parameres a little asymmetrical, with acuminate apices. — Length of body with forceps : 9.5 mm. — Female unknown. Holotype male: Venezuela, T. F. Amaz. Cerro de la Neblina, Camp II. 2100 m, 0° 50'N. 65° 59' W. 31 January 1985. Under bark of dead Bonnetia sp. W. E. Steiner collector, gen. prep. No. 997, det. Dr. H. Steinmann. Deposited in the Smithsonian Institution, National Museum of Natural History, Washington. 1 (2) Legs brown, but apices of femora and tarsi light brown; pronotum essentially longer than broad; posterior margin of ultimate tergite undulate, without triangular lobe at median section; each branch of forceps very short, only a little longer than broad 2 (1) Legs black, but yellow at the base and apex; pronotum only a little longer than broad ; posterior margin of ultimate tergite with two short and triangular lobes at median section (Fig. 3); each branch of forceps normally developed, long, about three times IDENTIFICATION KEY TO THE NEOTROPICAL SPECIES (Fig. 1) frater sp. n. as long as broad howardi (BURR, 1910) Author's address: DR. HENRIK STEINMANN Zoological Department Hungarian Natural History Museum Budapest VIII., Baross utca 13 H-1088