STUDIES IN NEOTROPICAL MALLOPHAGA—CARRIKER 143 
This subspecies differs from the nominate form and from the one 
that follows chiefly in its much larger size and the male genitalia. 
The “scent” gland is small (that of mandibularis is smallest of all 
the races known), is of a simple crescent shape, and les within the 
deeply incised margin of pleurite V, like mandibularis. ‘There is a 
slight difference in the shape of the last abdominal segment of the 
male. The female seems to be impossible to separate from the female 
of mandibularis, except in size and porportions. 
MEASUREMENTS OF HEPTAPSOGASTER MANDIBULARIS 
mandibularis (types) modestae 
Structure Male | Female Male Female 
Length| Width Length| Width |Length| Width |Length| Width 
| 
| 
— | | | | eS | | 
TSO yy Aae ies Ms I Oe AI a reg MG DU RA pL a | ne ede DPA i Tible (eos ee SUC: F501 Pi a a a 1, 61 
ET OS, USTs LEN RAMU Ge i) NOP 0.357 | 0.44 0. 39 0. 45 0.42 | 0.57 0. 42 0.61 
PTOLW ORAS Ser aN Mee SY 0. 124 0. 24 0.138 0. 26 0.15 0. 305 0. 16 0. 33 
Miesothoraxiehs SUS Ui ye aT Whune le 0.12 0. 43 0. 13 0. 45 0.15 0. 58 0. 16 0. 61 
Mictathoraxs owen Noe a Nas 0.086 | 0.42 0. 097 0. 43 0. 11 0. 55 0. 16 0. 57 
PANG OMMOT RERUN ERON) Ne CeO 0. 62 0. 51 0. 74 0. 57 val 0. 68 0. 96 0. 76 
Antennae (first segment in male)_.__| 0.075 | 0.053 | 0.195 |___-___- 0.11 | 0.087} 0.203 
IPATAMOTSA selves 2 ee a 0. 09 OV OS PP Mise a aaa OT |) OW Ne 
HEPTAPSOGASTER MANDIBULARIS TAPICOLLAE, new subspecies 
FIg@uRE 11, d-g 
Types.—Male and female, adults, from Crypturellus soui meseryth- 
rus, collected by the author on Cerro Tuxtla, Veracruz, Mexico, May 
8, 1940; in U.S. National Museum. 
The male differs from mandibularis and modestae in having the 
temples much less divergent, and from modestae in smaller size. 
Unlike mandibularis, abdominal segment VII is deeply imbedded 
within VI, and is also of different shape. 
_ The genital armature is nearer to that of mandibularis, except that 
the endomeral plate is much wider, with longer prongs and sac. The 
female seems to be impossible to separate except by measurement, al- 
though the temples are much less divergent. The “scent” gland in 
the male is of the same general shape as the previous two races but 
much larger, extending into pleurite VI, while sclerite V is not incised 
to receive it, as in mandibularis and modestae, but it lies just under 
the inner edge of the plate, with seemingly a short duct leading from 
it to the surface (see figure). 
