Megommata leefmansi (Nijveldt)

Kolesik, Peter & Gagné, Raymond J., 2020, A review of the gall midges (Diptera: Cecidomyiidae) of Indonesia: taxonomy, biology and adult key to genera, Zootaxa 4847 (1), pp. 1-82 : 45-46

Megommata leefmansi (Nijveldt)

[ Figs 24 a–j]

Coccomyza leefmansi Nijveldt in Barnes & Nijveldt (1954: 92) .

Megommata leefmansi (Nijveldt) : Harris (1968: 455), new combination.

Type series. Holotype male, reared by Tjoa Tjien Mo from larva feeding on eggs of scale insect Pulvinaria polygonata Cockerell ( Hemiptera : Coccidae ) on Citrus sp., Bogor, Indonesia, x-1952, Cecid. 525 of Nijveldt collection (Wageningen, The Netherlands). Paratype males (Cecid. 522–524), paratype females (Cecid. 525–534), same data as holotype. Other material: males (Cecid. 8494–8498), females (Cecid. 8499–8500), Barnes collection ( BMNH), same data as holotype. We have not seen this material.

Description. slightly modified from original description by Nijveldt (1954) and by Harris (1968) who examined types deposited in BMNH. Male. Length about 1.2 mm. Abdomen bright red, thorax dark ochreous. Eyes not quite divided laterally, still contiguous, occipital protuberance absent [ Fig. 24a ]. Flagellomeres 12, first and second fused, gynecoid: consisting of barrel-shaped node and short neck, circumfila simple [ Fig. 24g ]. Palpus 4-segmented [ Fig. 24d ]. Wing: R 1 joining C slightly anterior to half-length of wing, Rs absent, R 5 joining C slightly posterior to wing apex, M fold apparent, M 4 and Cu 1 forming fork [ Fig. 24e ]. Tarsal claws bent at right angle near distal third, those of forelegs bearing strong tooth [ Fig. 24b ], remainder simple [ Fig. 24c ]. Terminalia [ Figs 24h, i ]: gonocoxite stout, gonocoxal apodemes separated basally; gonostylus tapered, completely setulose; cerci rounded apically; hypoproct entire, broadly rounded; aedeagus tapered, as long as long as gonocoxite.

Female. Length about 1.2 mm. Flagellomeres 12, first and second fused, consisting of cylindrical node and short neck, slightly shorter than in male [ Fig. 24j ]. Ovipositor: short, barely protrusible; cerci separate, ovoid in lateral view; hypoproct 2/3 length cerci; 10th sternite in form of large, setose lobe, pointed distally in lateral view [ Fig. 24f ].

Pupa. Brown, length 1.3–1.9 mm.

Larva. White with yellow dorsal stripe. Length 1.5–1.7 mm.

Biology. Larvae were found feeding in ovisacs of the scale insect Pulvinaria polygonata .

Geographical distribution. This species has been found thus far only at its type locality in Bogor , Java, x- 1952 .

Figures

FIGURES 24a–j. Megommata leefmansi: a, male head; b, tarsal claw of foreleg; c, tarsal claw of mid or hind leg; d, palpus; e, wing; f, female terminalia (lateral); g, 3rd male flagellomere; h, gonostylus (dorsal); i, male terminalia (dorsal); j, 1st and 2nd female flagellomeres. Figs a, d–j from Harris (1968), Figs b, c from Nijveldt (1954).