216 MISC. PUBLICATION 4 2 4, U. S. DEPT. OF AGRICULTURE 



third as numerous as marginal 8-shaped pores; submarginal setae in a com- 

 plete row terminating near penultimate pair of marginal 8-shapecl pores; 2 

 pairs of setae (their bases nearly or actually contiguous) posterior to genital 

 opening, 3 pairs of setae anterior to genital opening, equidistant from one 

 another and situated successively farther cephalad. 



Apex of abdomen: Setae, apical 20-24 fi long, interapical 7-8 ^ long, outer 

 ventral 3.6 fi long; anal opening apical, anal tube very short or absent, anal 

 opening and tube usually not differentiated from anal ring, which is an elliptical 

 plate, appearing as a semicircular rather than an elliptical plate if more heavily 

 sclerotized on the dorsal than on the ventral side, with a seta 8-9 m long at 

 each end and a pore beside each seta, also a small circular opening in or near 

 center of plate ; ventral surface of apex rugose. 



Second stage. — Resembling adult but smaller ; margin with 4-6 trilocular pores 

 opposite each spiracular pore band; ventral surface with atrium of spiracle 

 enlarged and containing 1 or 2 trilocular or quinquelocular pores, 3 or 4 similar 

 pores between spiracular opening and body margin, 1 dark-rimmed 8-shaped pore 

 each side of beak and 3 or 4 posterior to mouth parts ; apex of abdomen without 

 apical or interapical setae, or setal bases ; with a pair of minute ventral setae ; 

 anal opening apical ; anal tube very short, membranous ; anal ring slightly sclero- 

 tized, with 2 setal bases. 



Larva . — Elliptical. 



Margin : With 28 8-shapecl pores, axes of virtually all transverse or diagonal ; 

 a minute seta close to each pore of the posterior 3 pairs ; 3 pairs of setae at 

 anterior end. 



Dorsal surface : 8-shaped pores in a lateral row of 9 on each half of body, 

 about two-thirds the size of marginal pores ; disk pores between lateral and 

 marginal 8-shaped pores. 



Ventral surface : Antennae 5-segmented ; antenna! setae. I, 1 ; IV, 1 ; V, 3 

 long, 2 stout, 3 fairly stout; antennal bases one-half length of antenna apart; 

 beak setae, 2 pairs apical, 1 pair median ; spiracle with 1 trilocular and 1 quin- 

 quelocular pore ; leg setae, coxa 2, femur 1 on inner margin near base, tarsus 1 

 each on inner and outer margins ; tibia one-third as long as tarsus ; 9 pairs of 

 sabmarginal 8-shaped pores; apparently 11 pairs of submarginal minute setae, 

 on abdomen, thorax, and head ; 3 pairs of setae near antennae. 



Apex of abdomen : Setae, apical 36 n long, interapical 9 n long, outer ventral 2 

 M long; anal opening apical, anal tube very short; anal ring circular, heavily 

 sclerotized, with 2 setae apparently 4 n long. 



Data. — Redescribed from unmounted material and the following 

 mounted specimens : Four females from palm, Port-of- Spain, Trini- 

 dad, F. W. Urich No. 4, type; 3 females and 17 larvae from Palmae 

 (OuUielma sp.?), Panama, U. S. N. H. ; 17 females and 8 larvae from 

 Bactrim minor, Grenada, West Indies, July 1900; 3 females and 10 

 larvae from Palmae, Mexico?, June 30, 1906, U. S. N. H.; 21 females, 

 1 second-stage specimen, and 27 larvae from unknown palm, St. Clair, 

 Port-of-Spain, Trinidad, H. Morrison, November 24, 1918, probably 

 from the same tree as the type material ; 2 females from palm fruit, 

 Bluefields, Nicaragua, intercepted at New Orleans, La,, E. Kostal, 

 October 26, 1920; 5 females and 4 larvae from Guilielma speci-osa, 

 Goeldi Museum, Para, Brazil, intercepted at Washington, D. C, W. B. 

 Wood, April 23. 1921; 1 mounted female from Pyrenoglyphis (Bac- 

 tris) major, Canal Zone, intercepted at New Orleans, La., M. S. Miri- 

 manian, August 26, 1935. 



Asterolecamum urichi is closely related to difficile and simile. 

 Characters differentiating it from simile are discussed under that 

 species. It can be separated from difficile by the lack of a conspicuous 

 interruption in the marginal row of 8-shaped pores, by the absence 

 of marginal trilocular pores on the anterior end of the body, by the 

 absence of multilocular pores, and by the length of the apical setae, 

 which are about twice the length of the ring setae. 



