. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 440 Bulletin Museum of Comparative Zoology, Vol. 148, No. 9. "\g^*«4^l^ Figure 85. Geographic variation of Gasteracantha. Locality data clockwise: Torrey Pines State Park, San Diego Co., California; Laguna Beach, California; Austin, Texas; College Station, Texas; Hattiesburg, Mississippi; Houston Co., Alabama; Charleston, South Carolina; Gainesville, Florida; New Providence, Bahamas; Naples, Florida; Mona Island; La Romana, Dominican Republic; Momance, Haiti; Los Llanos, Cuba; Pinar del Rio, Cuba; Port Antonio, J
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 440 Bulletin Museum of Comparative Zoology, Vol. 148, No. 9. "\g^*«4^l^ Figure 85. Geographic variation of Gasteracantha. Locality data clockwise: Torrey Pines State Park, San Diego Co., California; Laguna Beach, California; Austin, Texas; College Station, Texas; Hattiesburg, Mississippi; Houston Co., Alabama; Charleston, South Carolina; Gainesville, Florida; New Providence, Bahamas; Naples, Florida; Mona Island; La Romana, Dominican Republic; Momance, Haiti; Los Llanos, Cuba; Pinar del Rio, Cuba; Port Antonio, Jamaica; Mandeville, Jamaica; Barro Colorado Island, Panama Canal Zone; Carmelina, Honduras; Chichen Itza, Yucatan; Atoyac, Jalisco; Most Southern Palm Grove, Cameron Co., Texas; Brownsville, Texas; La Paz, Baja California. Scale line: mm. from Texas to Central America. The short- est stubbiest spines are found in Mona Island and California; the longest ones in Florida and the southeastern states. The most acute spines are found in Cuban speci- mens. A characteristic of Hispaniola and southern Florida specimens is that the sec- ond pair of spines is larger than the first pair. Since there are clines of these char- acters in various directions, it is not easy to segregate subspecies except for island pop- ulations. Unusual variations ai^e the additional round plates found at times on the dorsum of the abdomen. The specimen from Laguna Beach, California illustrated (Fig. 85) has an extra assymmetrical plate on the left anterior. Many specimens throughout the North American range have the median posterior plate split into two plates (Texas, South Carolina, and Dominican Republic, Fig. 85). Total length of females is to mm, carapace to mm wide. Total length of males to mm, carapace to mm wide. Size variation is about the same throughout the southern states. Species problems. Archer judging by museum labels, considered specimens from the western s
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