Neomacrocoris poissoni Linnavuori

Sites, Robert W. & Mbogho, Aaron Y., 2012, Revision of the African genus Neomacrocoris (Hemiptera: Heteroptera: Nepomorpha: Naucoridae), Zootaxa 3555, pp. 1-39 : 25

Neomacrocoris poissoni Linnavuori

Figs. 39–42

Neomacrocoris poissoni Linnavuori 1971 : Ann. Zool. Fennici 8: 355.

Discussion. This is a small species of Neomacrocoris; it is 8.0– 8.5 mm in length. Linnavuori (1971) reported that it is recognized easily by its small size and the male genitalia. Specifically, the phallosoma has a characteristic shape and the left lobe of the 7th segment is “blurt” and the pseudostrigil has a “strongly prominent caudal angle.” Illustrations were provided for the 7th and 8th terga, and ventral and dorsal views of the aedeagus ( Linnavuori 1971). We provide here photographs of the habitus, aedeagus, and 7th tergum of a male paratype (Figs. 39–41), and a line drawing of the terminal abdominal sterna with subgenital plate of a female paratype (Fig. 42).

Many specimens of this species were collected in pools in a swampy gallery forest in Equatoria Province of southern Sudan ( Linnavuori 1971), which is now in the country of South Sudan. Although the only record in the literature is of the type series, the species is more widespread, as we have examined one male specimen from western Nigeria and two from the Ivory Coast. The holotype is housed in AMNH.

Diagnosis. This moderately small species appears distinctly parallel-sided in specimens from Sudan; those from the Ivory Coast are slightly more ovate. Structure of the phallosoma and pseudostrigil are similar to those of N. bondelaufa ; however, the dorsal rim of the phallosoma apex is thickened and rounded and the ventral surface is greatly enlarged and triangular in N. poissoni , whereas the dorsal rim is carinate and the ventral surface is smaller and rounded in N. bondelaufa .

Published records. SUDAN ( Linnavuori 1971).

Type material examined. PARATYPES: SUDAN: Equatoria, Loka forest, 8–10 IV 63, Linnavuori ( NMWC; UMC 13, 1Ƥ);

Additional material examined. IVORY COAST: 7 o 49’N, 4o 41’W, Fetekro, 18-VII-69, W.P. Murdock, Jr. ( USNM, 23). NIGERIA: Kadura-Kontagora Rd., 3 iv 1963 / (15) pools, bridge over tributary of R. Niger / Mr. & Mrs. Omer-Cooper, B. M. 1969-138 ( BMNH, 13). SUDAN: A.E. Sudan, Equatorial Prov., Li Rangu, 15 mls from Yambio, Feb.–March 1948 / P.H. Abbott Coll., B.M. 1948-306 / From Stream ( BMNH, 13; UMC, 13); SW, nr Yambio, P.H. Abbott ( USNM, 13, 1Ƥ).

FIGURES 39–42. Neomacrocoris poissoni PARATYPE (39) habitus, (40) male genital capsule, (41) medial lobes of 7th abdominal tergum of male, (42) terminal abdominal sterna of female including subgenital plate. Sizes are not proportionate among figures.