l82 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. Ill 



ment Station, Mackay, Queensland, and from the British Museum of 

 Natural History, London. 



According to McDougall (1934, pp. 60, 65, 67; "B sp.") the larvae 

 inhabit the soil of cultivated fields and grasslands ; feeding normally 

 occurs only during short periods immediately after each ecdysis ; the 

 complete larval life is probably less than i calendar year ; and pupation 

 occurs in September or early October, the adults being found in great- 

 est numbers as early as the middle of October. 



In structure, the larva of C. queenslandicus resembles the larvae 

 of the genus Cryptohypnus, particularly in possessing dorsal postero- 

 epicranial setae (as in fig. 10, g, ped), and medial anterotergal setae 

 {atm, figs. 10, g ; 37, d) in thorax and abdomen. It is distinguished 

 by the following characters: Dorsum of ninth abdominal segment 

 (fig. 37, e, f) with sharp "teeth" {to) on the lateral margins, and 

 only 2 setae on the central area; abdominal mediotergites (fig. 37, d) 

 with long impressions and lacking seta number 7 as numbered in 

 Cryptohypnus (fig. 38, /). 



Larvae examined measured up to 19 mm. in length ; dorsum yel- 

 lowish brown to pale chestnut brown ; rather densely set with small 

 punctures. Caudal notch large, not narrowed posteriorly. Urogomphi 

 {ur, fig. 37, e,f) usually with prongs subequal in length, inner prongs 

 {ipr) sometimes longer and always slightly more robust than outer 

 prongs (opr). Ninth abdominal segment (fig. 37, e, f) without 

 median dorsal groove, and distance between pleural area and caudal 

 notch approximating one-fifth to one-fourth length of segment, ex- 

 clusive of urogomphi. Nasale with tridentate tip, lateral denticles only 

 slightly smaller than median denticle. Frontoclypeal area rounded 

 posteriorly. Eyes present ; surrounded by 4 setae. Three unpaired 

 lateroepicranial setae on each gena. Gula moderately long, but very 

 narrow. One "sensory" appendix on second segment of antenna. 

 Mandible with prominent retinaculum. Presternum of prothorax 

 divided, the median posterior piece being small. Mesothorax and meta- 

 thorax with distinct impressions on mediotergites, and without spine- 

 like setae on episterna. Abdominal mediotergites (fig. 37, d) with 

 transverse branches of impressions reaching four-fifths to five-sixths 

 of distance from longitudinal branches to middorsal suture. Abdomi- 

 nal pleurites large, subequal from first to eighth segments. 



Material used in study. — Thirty larvae were examined. All were 

 collected at Mackay, Queensland, by W. A. McDougall, who suc- 

 ceeded in rearing this species. (C.N.C. and B.M.) 



