Nabis capsiformis Germar

Usinger, Robert L., 1946, Hemiptera Heteroptera of Guam, Insects of Guam II, Honolulu, Hawaii: Bernice P. Bishop Museum, Bulletin 189, pp. 11-103 : 52

44. Nabis capsiformis Germar , Sibermann's Rev. Ent. 5: 132, 1837.

Piti, three specimens, April 30 , nine specimens, June 20 , one specimen, June 26, Usinger ; two specimens, Mt. Tenjo , May 3, Swezey and Usinger ; one specimen, Piti , July 13, on sedges, Swezey ; one specimen, Mt. Alifan , May 21, on Ipomoea, Swezey ; one specimen, Fadian , Aug. 19, on Sida, Swezey ; one specimen, 2 miles south of Piti , June 14, Usinger ; three specimens, Upi Trail , May 5, Swezey and Usinger ; three specimens, Machanao , Aug. 6, on spiny amaranth, Swezey ; one specimen, Dededo , May 11, Usinger ; one specimen, Dededo , Aug. 11, Swezey ; one specimen, Talofofo , Nov. 18, Swezey .

An extremely widespread and apparently variable species. China [Ins. Samoa 2(3): 157, 1930] notes differences between typical Mediterranean and South African specimens and those from Pacific islands. He also finds that "the hind femur and the second antenna! segment in the Samoan specimens are distinctly longer than in Hawaiian specimens, although the shape of the male parameres is the same."

The Guam specimens are of two types, those from Piti and Mt. Tenjo being pale in color with relatively feebly sinuate subbasal angle of male genital clasper, whereas those from Upi Trail , Machanao , Dededo , and 2 miles south of Piti are darker in color and have the male genital claspers strongly sinuate subbasally. These differences seem to fall within the limits of variation when compared with hundreds of specimens from nearly all of the principal island groups of the mid Pacific, but the presence of these two fairly distinct types on the single island of Guam is difficult to understand.