NEW SPECIES, RECORDS, AND SYNONYMS OF 
CHILEAN THERIDIID SPIDERS 
(ARANEAE, THERIDIIDAE)* 
By Walter C. Sedgwick 
Bar M Ranch, Boston, Ga. 31626 
This paper is a supplement to Levi (1967), without which it 
would not have been possible. Since the northern provinces of Chile 
are so arid, most previous collecting has been done in the southern 
part. My collecting was mostly in the provinces of Santiago and 
Valparaiso, as well as those few enclaves and rivers in the northern 
desert which support vegetation. As my trip to Chile occurred during 
the dry Chilean summer, I concentrated on collecting under stones 
and using a head-light at night. This yielded an abundance of speci- 
mens of Theridion. One Dipoena and two species of Theridion are 
new, another is a new record for Chile. There is one new synonym 
of a Chilean theridiid and two new synonyms as a result of exam- 
ining type specimens of Nicolet’s Araneidae which had been placed 
in the wrong family. 
The new Dipoena cartagena is unusual because its mouth parts 
are specialized (Fig. 14), apparently for holding onto legs of ants, 
Dipoends prey. I do not know of other instances of similar adapta- 
tion of mouth parts; but they may have been overlooked in the 
minute specimens. Mouth parts of spiders are conservative and 
hardly differ in different genera. 
I am very grateful to Dr. Willard Whitcomb for allowing me 
to accompany him on his trip, Dr. and Mrs. Luciano Campos for 
their hospitality, Drs. Cortez and Charlin for their patience and 
kindness during the trip, and Luis Cartagena and Luis Alvarez for 
their collecting enthusiasm. I am especially and most sincerely grate- 
ful to Dr. Herbert Levi of Harvard for the drawings and the con- 
tinuing advice and help he has given me throughout the preparation 
of this paper and for examining the Nicolet types. Dr. M. Hubert 
of the Museum National d’Histoire Naturelle, Paris, found the 
Nicolet types and made them available to me for study. 
Achaearanea tepidariorum (C. L. Koch) (Levi, 1955: 32, figs. 
69-70, 83-84; 1963b: 215, map 1; 1967: 5, 7-8.) Additional rec- 
ord. Coquimbo Province: Pampilla, 14. II. 73, one 9 (L. Alvarez). 
Achaearanea acoreense (Berland) ( Achaearanea geochares Levi, 
1955: 20, figs. 39-40, 46. Achaearanea teja Levi, 1967: 8, figs. 8-10. 
* Manuscript received by the editor December 5, 1973. 
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