Thorodiplosis impatientis Felt
Creators: name: Kolesik, Peter
name: Gagné, Raymond J.
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Cecidomyiidae
Thorodiplosis
Thorodiplosis impatientis

description: Thorodiplosis impatientis Felt
[Figs 40 a–j]
Thorodiplosis impatientis Felt, 1921d: 89.
Material examined. Type male and female reared from a marginal roll on the upper leaf surface of Impatiens platypetala Lindl. (Fig. 599 [Fig. 40a] in DvL & DvLR (1918)), at Mt Gede, Cibodas, Java, 15-vii-1920 (NYSM #a3153). Felt’s two slides contain two males and two females, all mounted whole and uncleared, with most body parts present but partially shriveled.
Description. Male. Wing length 1.6 mm, width 0.6 mm. Antenna: basal node slightly longer than wide, internode as long as basal node, proximal node 1.5x length basal node, neck 2x length basal node [Fig. 40i]. Terminalia: gonocoxite splayed with low mesobasal lobe, gonostylus as long as gonocoxite, curved at distal third, setulose at basal third, carinate and setose beyond [Figs 40h j].
Female. Wing length 2.2 mm, width 0.8 mm. Antenna as in Figs 40c, d. Terminalia: cerci setulose, sparsely setose, with pair of long, blunt, closely set sensory hairs at apex [Fig. 40f].
Pupa, larva unknown.
Biology. This species causes a marginal roll on the leaf of Impatiens platypetala (Balsaminaceae) [Figs 40a, b]. The gall is figured in DvL & DvLR (1918, gall No. 599, Fig 599 [Fig. 40a]) and described by DvLR & DvL (1926) as follows. The margin of the leaf is rolled up for a small part of its length. The infected parts are white or yellowish and considerably thickened. The gall can be common locally.
Geographical distribution. This species was reported from Java (DvLR & DvL 1914, 1918; Felt 1921; DvLR & DvL 1926, 1941) from the following localities: Pagergunung, alt. 900 m, ix-1911; Paseh, near Bandung, alt. 1000 m, xii-1915; Ciharum, near Cibeber, alt. 1200 m, vi-1916; Mt Slamet, alt 800 m, v-1918; Cisarua, near Cimahi, alt. 1300 m, v-1918; Mt Gede, Cibeureum, alt. 1700 m, ii-1916; Mt Gede, Cibodas, alt. 1400 m, ix-1918; alt. 1500 m, 15-vii-1920; alt. 2000 m, vii-1928; Mt Pangrango, alt. 2300 m, vi-1920; Mt Salak, alt. 800 m, vi-1918; vii-1920; x- 1921; Mt Cikuray, alt. 1600 m, v-1925; Maseng, near Bogor, alt. 600 m, vi-1925. Additionally, Purnama Hidayat and Mahindra Dewi Nur Aisyah (IPB University) (pers. comm., Fig. 40b) found the galls at Mount Gede Pangrango National Park, Cianjur (6°52’33”S, 106°58’04”E), alt. 1407 m, 17-iv-2018; Kertajaya, Pasirkuda, near Cianjur (7°14’38”S, 107°10’24”E), alt. 504 m, 10-iv-2018; Pagelaran, near Cianjur (7°17’45”S, 107°7’7”E, alt. 967 m, 13- iv-2018; Mt Sari, Pamijahan, Bogor (near Mt. Bunder) (6°41’23”S, 107°12’01”E), alt. 967 m, 17-iii-2018.
Species unplaced to genus
The following three species are too incompletely known to be placed in existing genera or to describe new genera for them. Their types were reared from distinctive galls on known plants, therefore more specimens should someday be found on which to base proper descriptions.
description: Published as part of Kolesik, Peter & Gagné, Raymond J., 2020, A review of the gall midges (Diptera: Cecidomyiidae) of Indonesia: taxonomy, biology and adult key to genera, pp. 1-82 in Zootaxa 4847 (1) on pages 69-71, DOI: 10.11646/zootaxa.4847.1.1, http://zenodo.org/record/4406856