Celidothrips adiaphorus (Karny)

Okajima, Shûji & Masumoto, Masami, 2023, Six genera of the subtribe Macrothripina from Southeast Asia to Taiwan (Thysanoptera, Phlaeothripidae, Idolothripinae), Zootaxa 5291 (1), pp. 1-74 : 13

Celidothrips adiaphorus (Karny)

( Figs 21–26 , 214 )

Docessissophothrips adiaphorus Karny, 1923: 328–31 .

C. adiaphorus was originally described under the genus Docessissophothrips from Java based on unique macropterous female. Subsequently, Mound and Palmer (1983) mentioned it from Singapore and Peninsular Malaysia, but without detailed data. It is very difficult to discriminate this species, because it probably shows fairly complex intraspecific variation which includes size-related variation, sexual dimorphism, and even geographical variation. Moreover, it is also quite morphologically different depending on wings form, whether it is macroptera, microptera or aptera. The females and males listed below probably represent adiaphorus , but it shows a complicated variation and there is a possibility that two or more species are included. Females from Singapore, Peninsular Malaysia and Borneo, could well be identified to adiaphorus , but most of them have the tube shorter than the holotype female from Java. However, the females from Borneo have the tube somewhat intermediate. Four females from Mindanao, the Philippines, are distinctive in having the relatively short head, paler femora and the long setae. Three males are different from each other, and this may be due to allometric growth as well as geographical variation. Although, an apterous small male from Java has moderately developed fore femora and fore tarsal teeth, an apterous large male from Peninsular Malaysia has well developed fore femora and long fore tarsal teeth. A micropterous large male from Palawan, the Philippines, is quite different in having extremely long setae including mid-vertex cephalic setae ( Fig. 22 ) and moderately enlarged fore femora with some stout setae on dorso-external portion near base. Each of these males has a raised flange-like protrusion on the metanotum as in C. dolichos and C. lawrencei ( Mound & Palmer 1983) , but their size and form differ from each other. The protrusion on a male from Palawan is largely developed and the posterior margin emarginate with a pair of lateral peaks ( Fig. 24 ), but that of a male from Java is small and oblong ( Fig. 26 ) and of a male from Peninsular Malaysia is somewhat intermediate ( Fig. 25 ). Moreover, it is somewhat interesting that the large male of Ethirothrips tibialis has a similar raised metanotal protrusion ( Fig. 181 ).

Specimens-examined. Indonesia, 1 male (apt.), Java, Banyuwangi, Malan Sari , on bamboo, 27.viii.2005, SO ; Singapore, 1 female, Macritchie Park , on dead branches, 22.vii.1976, SO; Peninsular Malaysia, about 20km N from Kuala Lumpur, Templer Park, on dead branches , 3 females, 11.viii.1990, 2 females, 15.viii.1990, TN & SO, 4 females and 1 male (apt.), Tapah , on bamboo, 17.ix.1990, TN & SO , 2 females, Cameron Highlands, Tanah Rata , on dead leaves and branches, 18.ix.1990, TN & SO. Borneo, Sabah , 1 female, nr. Madai Cave , on dried twigs, 12.viii.1979, Y. Yoshikawa , 1 female, N 5 mls from Keningau, Bunsit , on dead leaves and branches, 1.iv.1989, K. Matsumoto. Philippine , 4 females, Luzon Is., Quezon National Forest Park, on dead leaves, 22.viii.1979, SO , 1 male (mic.), Palawan Is., Santo Lucea , on dead leaves and branches, 12.v.1989, T. Niisato .

Figures

FIGURES 21–26. Celidothrips adiaphorus. (21) Head, female; (22) head & prothorax, micropterous male from Palawan; (23) metanotum & pelta, female; (24) metanotum & pelta, macropterous male from Palawan; (25) metanotum, apterous male from Java; (26) metanotum, apterous male from Peninsular Malaysia.

FIGURES 211–222. Macrothripina genera and species. Aesthesiothrips species, female 211–213: (211) A. breviconus sp. n.; (212) A. elongatus sp. n.; (213) A. jatrophae. Celidothrips species, female 214–215: (214) C. adiaphorus; (215) C. floresi sp. n. Ethirothrips species 216–222: (216) E. brevis, female; (217) E. colossus sp. n., male; (218) E. conopygus sp. n., male; (219) E. conopygus sp. n., female; (220) E. dalatae sp. n., female; (221) E. duricaudus sp. n., female; (222) E. kasetsarti sp. n., female.

FIGURES 176–181. Ethirothrips tibialis. (176) Head & prothorax, female; (177) antennal segments III–VIII, female; (178) tube, female; (179) fore tibia & fore tarsus, female; (180) metanotum & pelta, female; (181) metanotum & pelta, male.