A NEW SPECIES OF PUTa AND A PRELIMINARY ANALYSIS OF ...

8 MIllER & MIllER: PillO KOSZTARABI
nal segments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Ventral multilocular disk pores absent on last 2 abdominal
segments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2(1) Oral-rim type tubular ducts present, sparingly distributed
on dorsum; usually not more than 18 enlarged conical
setae in anal cerarius . . . . . . . . . . . . . nulliporus McKenzie
Tubular duct of any kind absent on dorsum; often as
many as 28-30 enlarged conical setae in anal lobe
cerarius 0 •••••• 0 • • • • • mimicus McKenzie
3(1) Dorsal setae with basal sclerotization, coalesced into cerariilike
structures . . . . . . . . . . . 0 • • • • • • 0 • • • • • • • • • • • • A
Dorsal setae without basal sclerotization or with sclerotization
restricted to area around setal socket, not coalesced
into cerarii-like structures 0 ••••••••••••••••••••
o 0 •••••• 0 • (continue at couplet 4 in McKenzie's 1967 key)
A(3) Cerarii without oral collar tubular ducts (Fig. Id) B
Cerarii with oral collar tubular ducts .... .lasiorum (Cockerell)
B(A) Head without large-sized tubular ducts near body margin
adjacent to anterior cerarii . . . . . . . . . . . . . . . . . . . . . . . C
Head with large·sized tubular duets near body margin adjacent
to anterior 1 or 2 cerarii (Fig. 1e) ....kosztarabi, n. spo
C(B) Circulus present. calcitectus (Cockerell)
Circulus absent 0 • • • • • • • • acirculus McKenzie
TREATMENT OF SPECIES
Key to Instars (Except Third-instar Female) of Puto kosztarabi
2
1 Without wings or wing pads . . . . . . . . .. 0
With wings or wing pads . . . . . . . . . . . . . . . . . . . . . . . 0 • 4
• • • • • • • • • • • •
2(1) Vulva present; antenna 9-segmented; frontal cerarius with
18 or more conical setae (Fig. 1) .. fourth·instar female (adult)
Vulva absent; antenna 7-segmented; frontal cerarius with