Carpophthoromyia dividua, Meyer, Marc De, 2006

Meyer, Marc De, 2006, Systematic revision of the fruit fly genus Carpophthoromyia Austen (Diptera, Tephritidae), Zootaxa 1235, pp. 1-48 : 12-13

C. dividua sp.n.

( Figs. 18 , 23 , 34)

Diagnosis

Arista distinctly plumose; frons with longitudinal brown band for entire length; distance between posterior frontal and anterior orbital is equal to or larger than distance between anterior and posterior orbital; three frontals; scutum without transverse band; postpronotum white; scutellum with three apical brown spots, only visible in ventral view; anterior margin of wing with one indentation near junction of vein C with apical part of vein R1; S­band and inverted V­band separate

Description

Head. Antennal segments brown. Arista distinctly plumose; longest rays longer than width of first flagellomere. Frons white to white­yellow, longitudinal brown band for entire length from ocellar triangle to antennal base, equal to width of ocellar triangle. Three frontals placed on oblique line, with anterior frontal at least 3 times as far from the inner eye margin than posterior frontal; two orbitals, posterior one poorly developed, rarely missing. Distance between posterior frontal and anterior orbital is equal to or larger than distance between anterior and posterior orbital. Face white, gena darker brown.

Thorax. Scutum shining black­brown; black setulae, without transverse bands of silvery setulae. Postpronotum white. Anepisternum with white to yellow band with lower margin reaching to lower fourth of posterior margin; with pale setulae, lower fourth black setulae sometimes more extensively so along posterior margin, two anepisternals. Katatergite and anatergite both white. Scutellum white, ventrally with 3 brown apical spots, not visible in dorsal view. Subscutellum black.

Legs brown, tibia, tarsal segments and extreme apex of front femur yellow, at most basal margin of tibiae slightly darkened.

Wing. Pattern similar to that of C. pseudotritea (see fig. 9). Hyaline indentation near junction of vein C with apical part of vein R1, reaching vein R4+5, sometimes continuing slightly beyond vein. S­band and inverted V­band not fused; sometimes V­band less strongly developed near subapical tooth, almost divided in two parts. S­band with small subapical tooth. Crossvein straight or slightly sinuous. R­M ratio 1.33–1.36.

Abdomen. Shining black­brown, tergite 4 with median yellow spot and/or silvery microtrichosity posteriorly; with black setulae. Spermatheca ovoid in apical part, base slender. Female terminalia, oviscape shorter than abdomen; shining black­brown. Aculeus orange; flattened, about 5 times longer than wide ( Fig. 18 ); tip simply pointed ( Fig. 23 ). Male terminalia ( Fig. 34), epandrium heart­shape in posterior view; posterior lobe of lateral surstylus elongated and curved at apex.

Body length: 4.83 (4.08–5.36)mm; wing length 5.04 (4.40–6.16)mm

Etymology

After the Latin adjective dividuus, meaning divided or separated, and referring to the larger separation between orbital and frontal setae, which separates this species from the closely related C. pseudotritea .

Material

Holotype ɗ: CONGO (D.R.), Kasongo, September 1959, P.L.G. Benoit (KMMA).

Paratypes: CAMEROON: 2ɗɗ 1Ψ, Yaoundé, 29.V­8.VI.1936, “from foliage”, Van Zwaluwenburg & McGough (USNM). CONGO (BRAZZAVILLE): 1ɗ, Banane, 25.II.1986, A. Delobel ( TAU). CONGO (D.R.): Eala, 1ɗ, January 1936, “2044”; 1ɗ 1Ψ, 23.IV.1936; 1ɗ, 24.IV.1936; 1ɗ 1Ψ, 25.IV.1936; 1ɗ, 25.IV.1936 “2561”, 1ɗ, May 1936, all J. Ghesquière (KBIN); Kasai, Bekese, Itunda, 1ɗ, F.J. François; 1ɗ, August 1959, F.J. François (both KBIN); 1ɗ 1Ψ, Kasai, Ngombe, 17.XI.1921, H. Schouteden (KMMA); 1ɗ, Kasongo, September 1959, P. L. G. Benoit (KMMA); Luebo, 1Ψ, IV.1931, J.P. Colin (KMMA); 1ɗ, Luebo, Kamaiembi, 17.IX.1921, H. Schouteden (KMMA); 1ɗ, Lulonga, Lokolenge, June 1927, J. Ghesquière (KBIN); 1ɗ, Lusambo, 1921, J. Ghesquière; Nyangwe, 1Ψ, 17.VI.1920, “B­24” “larve parasite anona ”, J. Ghesquière; 1Ψ, “F­5”, May 1920, “goyave”, (KMMA); 1ɗ, Parc National Garamba, Mission H. De Saeger, II/hd/8, 3.VIII.1951, H. De Saeger “2195” (KMMA); Stanleyville, January 1924, J. Ghesquière (KMMA); 1ɗ 1Ψ, 63mi E Luluabourg, 10.VIII.1957, E.S. Ross & R.E. Leech (CAS).? GHANA: 1ɗ “Mus Westerman” (ZMK); this specimen bears an additional label saying “ Guinea ”. However this label is added afterwards and is not original. It is possible that this “ Guinea ” refers to western Africa, in particular the Danish settlement of Christiansborg which is now Teshi nr Accra in Ghana (see Pont, 1995). It is not clear, however, whether this specimen really originates from this locality. IVORY COAST: 1Ψ, Adiapo, 16.I.1950 (MNHN)

Non­type material (damaged, abdomen missing; sex unknown)

CONGO (D.R.): Luebo, 1 specimen, October 1930, J.P. Colin (KMMA).

Distribution

Cameroon, Congo (Brazzaville), Congo (D.R.); Ivory Coast, possibly also Ghana.

Host plants

Material from Congo is labelled as being found in Anona L.sp. ( Annonaceae ), as well as being associated with Psidium guajava L. ( Myrtaceae ). Both records, however, need confirmation.

Comments

C. pseudotritea turned out to be a species complex (see below, under pseudotritea ), comprising five species of which four are new to science. C. dividua resembles most closely C. pseudotritea in most characters including the aculeus shape (the other new species all have a modified tip distinctly different from pseudotritea ). It can be differentiated by the larger distance between orbital and frontal setae, as well as some differences in male terminalia. Its distribution largely coincides with that of pseudotritea although it could be more restricted in western Africa.

Figures

FIGURES 13 – 22. Aculeus full length. — 13. Carpophthoromyia flavofasciata. — 14. C. radulata. — 15. C. tritea. — 16. C. interrupta. — 17. C. schoutedeni. — 18. C. dividua. — 19. C. tessmanni. — 20. C. pseudotritea. — 21. C. virgata. — 22. C. vittata.

FIGURES 23 – 27. Apical part of aculeus. — 23. Carpophthoromyia dividua. — 24. C. pseudotritea. — 25. C. tessmanni. — 26. C. vittata. — 27. C. vittata (lateral view).