Adrothrips systenus Mound, 1970

Mound, Laurence A., Tree, Desley J. & Wells, Alice, 2022, Convoluted maxillary stylets among Australian Thysanoptera Phlaeothripinae associated mainly with Casuarinaceae trees, Zootaxa 5190 (3), pp. 301-332 : 313

Adrothrips systenus Mound

( Figs 18 , 27 , 37 )

Adrothrips systenus Mound, 1970: 451

Described originally from three female and two male micropterae taken at Moree from Casuarina glauca , this species remains known from few specimens. The maxillary stylets of the slide-mounted type specimens are possibly slightly out of their natural position, and probably are more deeply retracted into the head capsule in life ( Fig. 18 ). The mouth cone is long and pointed, and postero-lateral flexures of the stylets are rather similar to the condition in madiae sp.n., each with two curves twisted into an irregular figure-of-eight. Antennal segment V apex is almost symmetrical, the prosternal ferna are slender, transverse and almost continuous medially, and the mesopresternum is eroded to two slender lateral triangles with the mesoeusternal border transverse. The metanotum and tergites bear many short blunt pale setae ( Fig. 27 ), and the tube is slightly enlarged in the basal third ( Fig. 37 ) .

Specimens studied. Holotype female microptera, New South Wales, Moree 50km north, from Casuarina glauca , 16.vii.1968, in ANIC; Queensland, Dalby, Broadwater Lake, from Casuarina cristata , 1 male microptera, 8.iii.2006, in QDPC.

Figures

FIGURES 11–19. Adrothrips heads. (11) acanthus; (12) aureus; (13) cotteri; (14) intermedius; (15) lihongae; (16) latrarei; (17) madiae; (18) systenus; (19) westoni male.

FIGURES 20–27. Adrothrips heads, metanotum & pelta. (20) vernoni holotype; (21) mitchelli holotype; (22) aureus; (23) intermedius; (24) latrarei; (25) madiae; (26) vernoni; (27) systenus.

FIGURES 28–39. Adrothrips prosternites and abdomen. (28) cotteri; (29) latrarei; (30) lihongae; (31) vernoni; (32) akanthus; (33) aureus; (34) cotteri; (35) intermedius; (36) mitchelli; (37) systenus; (38) vernoni; (39) westoni.