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New West Indian Spiders Bulletin of the AMNH, Vol. XXXIII, Art. XLI, pp. 639-642   By:

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New West Indian Spiders.

BY NATHAN BANKS.

BULLETIN OF THE AMERICAN MUSEUM OF NATURAL HISTORY, VOL. XXXIII, ART. XLI, pp. 639 642.

New York, November 21, 1914.

[Transcriber's Note: Words surrounded by tildes, like ~this~ signifies words in bold. Words surrounded by underscores, like this , signifies words in italics.]

Article XLI. NEW WEST INDIAN SPIDERS.

BY NATHAN BANKS.

The following new species were found in the course of an examination of material in the American Museum of Natural History collected by Dr. F. E. Lutz and Mr. Charles W. Leng in Cuba and by Dr. Lutz in Porto Rico. The types are in that institution.

~Mecoloesthus signatus~ n. sp.

Cephalothorax pale, with black median mark, wider at head; sternum reddish or yellowish. Abdomen pale, with a black median stripe, narrowed near middle, not reaching anterior end where there is an oblique stripe, and a basal spot each side, also an apical spot each side, and the basal pleura show an oblique dark stripe. These marks are made up of small spots, more or less connected. The venter shows a narrow, median black stripe followed by a round spot, some distance before the spinnerets. Femora reddish, blackish near tip, and a white band at extreme tip; tibiæ dark, with a broad, white band near tip; rest of legs paler. Eyes in two groups, three each side (subequal in size) on a distinct elevation; A. M. E. minute, close together, and as high as upper edge of A. S. E. Abdomen elongate, cylindrical, spinnerets apical; legs very long; vulval area corneous, yellow, concave behind, but little swollen. Length; ceph. 1 mm.; abdomen 2.5 mm.; femur I, 12 mm.; femur IV, 10 mm.

From Naguabo, Porto Rico, March. No. 21669, Dept. Inv. Zoölogy.

~Callilepsis grisea~ n. sp.

Cephalothorax reddish brown, clothed with white hair; black in eye region; mandibles reddish brown; legs yellowish, darker on anterior tarsi and metatarsi, a dark band on middle of tibiæ III and IV and these metatarsi rather dark; sternum yellowish brown, darker on sides; abdomen grayish white above and below, above with a median basal blackish streak, a dark streak on each anterior pleuron and a dark streak each side toward apex, and two blackish spots above spinnerets, latter brownish. Cephalothorax narrow; eye rows short and far apart; P. M. E. slightly oval, about three diameters apart and much closer to the larger P. S. E.; legs moderately long, very hairy or bristly, and with stout spines especially on femora III and IV; tibiæ I and II with three spines beneath, one at base, one at middle, one at tip, metatarsi with basal spine only; metatarsi and tarsi scopulate beneath; hind legs more numerously spined; sternum once and a half longer than broad, pointed behind, narrowed in front; abdomen fully twice as long as broad, sides subparallel. Length 6.8 mm.

From 12 1/2 kilometers south of Pinar del Rio, Cuba, September. No. 21670, Dept. Inv. Zoölogy.

~Wulfila pretiosa~ n. sp.

Pale yellowish. Cephalothorax with a greenish stripe each side, a greenish mark over groove, and two faint lines back from P. M. E.; mandibles with a greenish vertical line in middle. Abdomen with dark greenish or nearly blackish stripe each side reaching to middle, a spot behind it, and a large median spot above spinnerets, four small dark dots in mid dorsum; legs with faint dark spots at bases of many spines on femora and tibiæ. Cephalothorax narrow in front, A. M. E. hardly more than diameter apart; about as close to the very much larger A. S. E. Posterior eye row nearly straight, the eyes equal and as large as A. S. E., P. M. E. about two diameters apart, and about as far from P. S. E. Legs long and slender, first and fourth pair about equal, all with stout spines on femora; tibiæ and metatarsi I and II each with two pairs of very long spines, none at tips. The black hair on tips of maxillæ, lip and mandibles is very prominent. Abdomen twice as long as broad. Length 4.5 mm.; leg I, 8 mm.

From San Carlos Est., Guantanamo, Cuba... Continue reading book >>




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