Orseolia paspali (Felt)

[Figs 32 a–k]

Parallelodiplosis paspali Felt, 1921d: 92 .

Orseolia paspali (Felt): Gagné 1973: 507, new combination.

Material examined. We examined Felt’s male lectotype, des. by Gagné (1985: 150) and 1 male, 2 female and 1 pupal paralectotype s reared from a leaf sheath gall on Paspalum scrobiculatum L. (as P. scrobiculatum Hook.) in Bogor, Java, Indonesia, vi-1920, Felt type #a3151. The lectotype is mounted whole, cleared, with terminal flagellomeres missing, gonocoxites partially folded, gonostylus mounted at angle, wings folded, legs intact, head partially shriveled. The male paralectotype, mounted with the lectotype on the same slide, has all flagellomeres preserved and all tarsi missing.

Description. Wing length 2.5–2.9 mm in male, 2.8–3.5 mm in female Gagné (1985). Palpus 4-segmented, palpiger present [Fig. 32k]. Tarsal claws [Fig. 32c]. Male flagellomeres [Fig. 32b, d]. Male terminalia [Figs 32 e–j]: gonostylus wide, distal edge constricted at midlength, setulose on basal half, carinate beyond, tooth large; hypoproct long, wide; aedeagus narrow, as long as hypoproct; cerci triangular.

Remarks. Orseolia paspali is similar to O. oryzae from which it can be separated by the gonostylus that is constricted at midlength and setulose on its basal half [Figs 32e, f], as opposed to gradually tapered and almost entirely setulose [Fig. 31b]. The female tergum 10 has more numerous setae than O. oryzae [Fig. 31f] (Gagné 1985).

Biology. This species causes a 10–15 cm long and 2 mm wide, tubular leaf sheath gall, similar to Orseolia oryzae, on Paspalum scrobiculatum L. ( Poaceae) (DvLR & DvL (1926, gall No 66, Fig. 40 [Fig. 32a]) and P. conjugatum P.J.Bergius (Gagné 1985) .

Geographical distribution. Orseolia paspali occurs in Indonesia and India. In Indonesia it was found only in the type locality Bogor, alt. 250 m, v-1920, on P. scrobiculatum (DvLR & DvL 1926). In India it is common, with the following confirmed localities (all from Gagné 1985): Kannur, Kerala, 20–30-viii-1928, on P. scrobiculatum; Allahabad, Uttar Pradesh, 1973, as laboratory colony on P. scrobiculatum; Orissa, Cuttack, Odisha, 1979, on Paspalum sp.; Jabalpur, Madhya Pradesh, 1948, on P. scrobiculatum; Raipur, Bhopal, Madhya Pradesh, 1981, on Paspalum sp.; Goa, 1981, on Paspalum sp.