Aulacochlamys Monrós

(Figs. 1 A, B; 2 A, B; 3 A; 4, A; 5 A)

Aulacochlamys Monrós, 1952: 657 . Type species: Exema costicollis Lacordaire, 1848, by original designation. Seeno and Wilcox, 1982: 43 (catalog).

Diagnosis. Length 2.00- 2.80 mm, width 1.18-1.72 mm. General body shape cylindrical. Antenna serrate beyond 5 th antennomere; 3 rd, 4 th, and 5 th antennomeres slightly widened, but not dilated distally. Pronotum medially elevated, with six distinct, small, sharp, longitudinal carinae, which converge medially near posterior margin. Pronotal base opposite mesoscutellum (posterior pronotal lobe) with or without notch (Fig. 1A). Prosternum gradually narrowing posteriorly, broadening before apex. Mesoscutellum very short, transverse. Anterior margin of metasternum concave. Metascutellum concealed by elytra. Elytral suture completely serrate, although serration weak near scutellum. Elytral tubercules well developed. Tibiae slightly curved, cylindrical. Fore- and midtibial apices without claw. Tarsal claw appendiculate.

Distribution. Pantropical, except Australia (Monrós, 1952).

Remarks. Aulacochlamys resembles Chlamisus Rafinesque in overall body shape, size and color; however, the six longitudinal carinae on the pronotum immediately dis-

tinguish it from Chlamisus . The absence of spines on the fore- and midtibiae also differentiates most studied species of Aulacochlamys from Chlamisus; however, this character may be sexually dimorphic in Chlamisus (Karren 1972) .

A total of 32 species were included in this genus by Monrós (1952); 3 Afrotropical, 21 Neotropical, and 8 Oriental.

Material examined.

Aulacochlamys costicollis (Lacordaire):

1) a. [Brazil] Corumba, Matt. Grosso/ b. F. Monrós Collection, 1959/ c. Aula-

cochlamys costicollis (Lac.) F. Monrós det. 1950. 2) a. Bolivia, Nor. Ungas, Co-

roico. II.952, coll. F. Monrós/ b. F. Monrós Collection, 1959. 3) a. Argent., Misiones, S. Sauier, P. Londero, Monrós, IX.947/ b. F. Monrós Collection, 1959.

Aulacochlamys distincta (Achard):

1) a. Panason, Philippines / b. F. Monrós Collection, 1959. 2) a. Manila, Philippines / b. F. Monrós Collection, 1959/ c. Aulacochlamys distincta Achard.

Aulacochlamys malayanus (Baly):

1) a. Sumatra, Benculen, IV. 1891, E. Modigliani/ b. F. Monrós Collection, 1959/ c. Exema malayana Baly / d. Aulacochlamys malayanus Baly, F. Monrós det. 1955.

Aulacochlamys pygidialis Monrós:

1) a. Peru, Firgo, Moria, Kuschel, XII. 1946 / b. paratipos/ c. F. Monrós Collection, 1959/ d. Aulacochlamys pygidialis Monrós .

Aulacochlamys radiatus Monrós:

1) a. [Argentina] R.A. Misiones, A. Ogloblin leg./ b. paratipos/ c. F. Monrós Collection, 1959/ d. Aulacochlamys radiatus Monrós.