What makes a happy face? Determinants of colour pattern in the Hawaiian happy face spider Theridion grallator (Araneae, Theridiidae)

Rosemary G. Gillespie, Bruce E Tabashnik

Research output: Contribution to journalArticle

20 Scopus citations


Theridion grallator, a small (100 days after hatching. Time required for completion of pattern development was roughly proportional to the amount of red in the final pattern. Mature males and females had similar morph frequencies overall, yet three rare morphs were seen only in females. Phenotypic frequencies of families were consistent with Mendelian inheritance at one locus, with the allele dictating absence of pattern recessive to alleles for patterned morphs.

Original languageEnglish (US)
Pages (from-to)355-363
Number of pages9
Issue number3
Publication statusPublished - 1989
Externally publishedYes


ASJC Scopus subject areas

  • Genetics
  • Genetics(clinical)

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