AMBLYOMMA TUBERCULATUM MARX, 39 



This is our largest tick, and a very distinct species, allies of which 

 occur in troiaical countries. 



Amblyomma maculatum Koch. 



Male. — Shield brown, lineate with silvery white, lines more or less 

 connected; a submedian pair in front, and a similar pair behind, 

 uniting in the middle; two lateral streaks connected near front, and 

 the inner one connected to submedian at middle; usually a few iso- 

 lated white spots on the festoons, but there is variation in the amount 

 of the white; legs more or less brownish, usually showing white at 

 tips of joints. Capitulum long, its posterior angles acute; palpi 

 short, the second joint about one and one-fourth times longer than the 

 last joint. Dorsum nearly twice as long as broad, with many promi- 

 nent punctures, most numerous in the middle region and in furrows ; 

 several elevated smooth streaks; lateral furrows very prominent, 

 arising in front of eyes; festoons strongly marked. Legs rather 

 heavy, IV (PI. VI, fig. 5) pair much the largest ; all, except I (PI. VI, 

 fig. 7), with a pair of stout spurs at tip of metatarsus. Coxa I 

 (PL VI, fig. 5) with one very long, sharp spine, only a trace of the 

 basal spine; coxse II and III with a flattened tubercle, IV (PL VI, 

 fig. 5) with a slender sharp spine, fully as long as width of joint. 

 Stigmal plate (PL VI, fig. 7) long, slender, its tip tapering and \\\)- 

 turned, surface with minute granules. 



Length of male, 4 mm. 



FeTnale. — Shield silvery white behind, on front brown, the white 

 of sides usually showing an elongate brown spot behind, and the 

 white of middle extending forward in two streaks, sometimes wholly 

 divided by a brown median stripe; legs pale brown; abdomen dark. 

 Capitulum (PL VI, fig. 10) long, hind angles scarcely acute; porose 

 areas elliptical, Avidely separated, and directed forward; palpi short 

 second joint but little longer than the last. Shield pentagonal, fully 

 as long as broad, broadest before middle, its lateral lobes strongly 

 punctured, very few punctures behind ; abdomen Avithout hairs. Legs 

 large, tarsi slender, metatarsi (except I) with a pair of spurs at tip; 

 coxpe armed as in male, except that the hind coxa bears onlj^ a 

 tubercle. Stigmal plate (PL VI, fig. 9) longer than usual, with a 

 much smaller dorsal prolongation, its surface furnished with minute 

 granules. 



Length of female shield, 2 mm. 



Specimens have been examined from various places in Texas — 

 Brazos County, Esperanza Ranch, Brownsville, Victoria, Harlingen, 

 and Columbus. Other localities are Cameron Parish, La. ; Virginia 

 (Niles) ; Orlando, Fla. ; Memphis, Tenn. ; and Tulare County, Cali- 

 fornia. It was described from " Carolina." The recorded hosts are 

 36657— No. 15—08 4 



