Melanacanthus margineguttatus Distant

Usinger, Robert L., 1946, Hemiptera Heteroptera of Guam, Insects of Guam II, Honolulu, Hawaii: Bernice P. Bishop Museum, Bulletin 189, pp. 11-103 : 25

14. Melanacanthus margineguttatus Distant , Ann. Mag. Nat. Hist. VIII, 7: 585, 1911.

Twenty-two specimens, Piti, June 20 and 22, on Crotalaria quinquefolia, Usinger ; one specimen, Yona, May 12, on pigeon pea, Usinger; one specimen, Piti, July 13, on sedges, Swezey; one specimen, Fullaway (1193). This is the northernmost record for this south Pacific species. I have three specimens from Fiji which fill an important gap in the distributional picture as outlined _byChina [Ins. Samoa 2(3): 97, 1930].

Eight eggs were laid on Crotalaria leaves on June 22 . The egg is blue-gray, cup-shaped, and, when recently laid, shows two parallel reddish lines, indistinct on the flattened dorsal surface, extending longitudinally toward the micropylar end. Size, 1.3 mm. long and 0.9 mm. wide. At the micropylar end is a ring of about 14 pits, each with an inconspicuous process at its middle. The ring extends broadly around the anterior rounded portion of the egg and only slightly onto the flattened part. The surface of the chorion is covered with numerous, round, very shallow depressions. Incubation period five days.