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TEACHERS' MANUAL. 49
CHAPTER XV.
Coleoptera. {Beetles.)
Q—Into how many sections is this Order of insects divided,
and name the characters by which each section is distinguished?
A.—They are divided into four sections, as follows:
1. Section have five joints in all of the feet.
2. Section have five joints in the anterior and middle
pair of feet and four joints in the hind or posterior pair.
3. Section have four joints in all of the feet.
4. Section have three joints in all of the feet.
Q.—Name the examples of the first, second, third and
fourth Sections in the illustrations given? A.—The Goldsmith
Beetle (Fig. 4), belongs to the first; the Darkling Beetle
(Fig. 119) to the second ; the Prionus Beetle (Fig. 227) to
the third, and the True Lady Bird (Fig. 239) to the fourth.
All the feet five-jointed. Pentamera, from the Greek numeral,
pente, five, and mera, parts or pieces.
Pentamera.
Q.—Into how many Sub-sections are the Beetles having
five-jointed feet divided? A.—Into six Sub-sections.
Q.—By what characters are they distinguished from each
other ? A.—By the form of their antennae.
Q.—Name the six Sub-sections and the forms of antennae
by which they are classified ? A.—1st Sub-section, antennas
thread-like (filiform); 2d Sub-section, becoming thickened
toward the tip, club-shaped (clavate); 3d Sub-section, beadlike,
(moniliform); 4th Sub-section, comb-toothed (pectinate);
5th Sub-section, composed of plates at the tip (lamellate)) 6th
Sub-section, saw-toothed (serrate).
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