118 NINETEENTH REPORT STATE ENTOMOLOGIST OF MINNESOTA—I9Q22 
as a short, straight vein to the margin of the wing; media faint, in- 
distinct vein in comparison with the other veins, and usually twice 
branched ; hind wings with two oblique veins arising nearer the base 
of the wing than usual in the family. Cornicles very short, on hairy, 
cone-shaped tubercles; cauda short and broad, extending but slightly 
or not at all beyond the rounded anal plate. Found on woody parts 
of conifers. The species found in Minnesota may be arranged in 
three habitat groups: 
a. Abies-Picea group. Very large forms, black or brown, with long oval 
abdomen. Basal part of terminal antennal segment with at least 10 
sensilla besides the 7 or 8 terminal rods. 
(1) LACHNUS CURVIPES Patch, 1912 
Found on Balsam Fir, Abies balsamia. 
(2) LACHNUS PICEAE (Panzer) Altum, 1875 
Found on Spruce, Picea canadensis. 
b. Pinus group. Medium large to large, with broad oval or globate abdomen ; 
brown and often mottled with darker spots or with metallic reflections. 
Basal part of terminal antennal segment with 10 or less hairs besides 
the terminal rods. 
(3) LACHNUS STROBI (Fitch) Fitch, 1858 
Found on White pine, Pinus strobus. 
(4) LACHNUS PINI (Linnaeus) Burmeister, 1835 
Found on Scotch pine, Pinus sylvestris. 
ce. Larix-Juniper group. Medium to small, light brown to yellowish; spur 
somewhat longer, basal part of terminal segment with 5 or 6 hairs be- 
sides the terminal rods. 
(5) LACHNUS LARICIFEX (Fitch) 1858 
Found on Tamarack, Larix laricina. 
(6) LACHNUS JUNIPERI (DeGeer) Kaltenbach, 1843 
Found on Juniper, Juniperus communis, 
9g. Genus SCHIZOLACHNUS Mordwilko, 1908. Type: Aphis 
tomentosa DeGeer, 1773. Similar to Lachnus but with the media of 
the fore wings with only one branch; found on young twigs and 
needles of pines. 
(7) SCHIZOLACHNUS TOMENTOSUS (DeGeer) Mordwiko, 1908 
This widely distributed species has not been taken in the state, 
but seen from the West and is reported from various places, and 
should be found in Minnesota. 
10. Tribe KULACHNINI. The Eulachnini are closely related to 
the preceding tribe (Lachnini), but may be distinguished readily by 
