Where does “Watson's hairstreak” come from?

Watson's hairstreak (English) comes from English hairstreak, from English Hair, from Middle English hēr, from Old English hēr, from Proto-West Germanic *hēr, from Proto-Germanic hē₂r, from Proto-Indo-European ḱe, from Middle English kyt — to bend; curve; arch; vault; to bow, bend, arch,...

Watson's hairstreak (English): Thecla letha, a species of theclan hairstreak butterfly

Definitions

  1. Thecla letha, a species of theclan hairstreak butterfly

Ancestry of “Watson's hairstreak”, step by step

Watson's hairstreak traces back through two separate lines of ancestry.

via English hairstreak

StepLanguageWordMeaning
1EnglishhairstreakAny of many butterflies, of the subfamily...
2EnglishHairA pigmented filament of keratin which grows from a follicle on the skin of humans and other mammals
3Middle Englishhēra hair
4Old Englishhērat this place
5Proto-West Germanic*hērhere
6Proto-Germanichē₂rhere, in this place
7Proto-Indo-EuropeanḱeDeictic particle, here; Post-positional...
8Middle Englishkyt
9Germankittputty certain kinds of cement used for fixing e.g. window panes
10Old High Germankuti
11Proto-West Germanickwidugum, resin
12Proto-Germanickweduzresin
13Proto-Indo-Europeangʷet-resin, gum; to say, speak
14Proto-Indo-Europeangū-to bend; curve; arch; vault; to bow, bend, arch,...

via English Watson

StepLanguageWordMeaning
1EnglishWatsonAny character who acts as a catalyst for the detective protagonist's mental processes in a mystery story; a consciousness that is privy to facts in the case without being in on the conclusions drawn from them until the proper time. After William L. DeAndrea, discussing Sir Arthur Conan Doyle
2English-sonAdded to a stem to form a patronymic or...
3Middle English-sonson
4Middle English-esAlternative form of -yssh; Alternative form of...
5Old English-espossessive marker, indicating that an object...
6Proto-Germanic-asused in formation of adverbs
7Proto-Indo-European-ēsPrimarily forms adjectival bahuvrīhi compounds
8Proto-Indo-European-ess
9Proto-Indo-European-osCreates action nouns or result nouns from verbs;...
Every word from Proto-Indo-European gū-