. Brigham Young University science bulletin. Biology -- Periodicals. Fig. 32. Trigonops platcssii Hllr. with cinereous and green scales, punctures sparse. Ventrites 3-5 sparsely punctuate, with setae on 5. Length mm; breadth mm. Type locality: Solomon Islands (Dr. Staud- inger and Bang Hass supplied a single damaged specimen.) Distribution of specimens studied: Guadal- canal: Teneru River Area, 1944-45 (D E. Beck, Ernest Reimschiissel, E. Ramey, and Doyle Tay- lor); Tunga River Bridge, and Nalimbu River, July-August, 1960, (Jan Schenk); Honiara Dis- trict, Kukum, January 27, 19
. Brigham Young University science bulletin. Biology -- Periodicals. Fig. 32. Trigonops platcssii Hllr. with cinereous and green scales, punctures sparse. Ventrites 3-5 sparsely punctuate, with setae on 5. Length mm; breadth mm. Type locality: Solomon Islands (Dr. Staud- inger and Bang Hass supplied a single damaged specimen.) Distribution of specimens studied: Guadal- canal: Teneru River Area, 1944-45 (D E. Beck, Ernest Reimschiissel, E. Ramey, and Doyle Tay- lor); Tunga River Bridge, and Nalimbu River, July-August, 1960, (Jan Schenk); Honiara Dis- trict, Kukum, January 27, 1957 (P. G. Fene- more); Wanderers Bay (data and collector not known); Florida Island: April 15, 1944 (Harry P. Chandler). T. platessa is a common species around the Henderson Field area. Beck, Reimschiissel, Ram- ey, and Taylor collected 150 specimens. Practical- ly no infomiation dealing with the host plants or the life history of this species is available. Cap- tain Beck did report collecting specimens of platessa "on the under-surface of a dead log," "found on all the plants of the forest and on the yellow hibiscus tree," "on the leaves of the torch ginger plant," and, "at random in the ; Ramey collected many specimens of this species in the "jungle ; Since so few specimens of most of the species dealt with are at hand, the study of the geni- talia has been limited to a few species. A num- ber of specimens of platessa were dissected. The female ovipositor is one of the elongate type. When fully extruded it is as long as the insect abdomen. The ninth segment, valvifer and coxite are partially scleratised making it possible to have it folded in the body cavity until in use when depositing eggs. The spermatheca of pla- tessa is distinctive, differing in detail from that. Fig. 33. Trigono))s platcssu Hllr. ,? genitalia o-orifice of internal sac; nil-median lobe; mo-median orifice; tg-tegmen; op-orificial plate; is-in
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