John A. Chemsak

Diversity of the Family Cerambycidae (Coleoptera) of the Tropical Dry Forest of Mexico, I. Sierra de Huautla, Morelos

Abstract The cerambycid fauna of the tropical dry forest of the Sierra of Huautla, Morelos, Mexico, is described. Collections were made between November 1995 and October 1996, during 5 d of every month, and collection methods included light trapping, Malaise trapping, and netting, sweeping and beating. A total of 153 species, 91 genera, 32 tribes, and four subfamilies was recorded. The subfamily with the greatest number of species was Cerambycinae with 78, followed by Lamiinae with 67, Lepturinae with six, and Prioninae with two. The tribes with the largest number of genera and species were Trachyderini with 13 and 17 and Acanthocini with 12 and 23. The genera with the most species were Phaea Newman with 11 and Lepturges Bates with eight. Estimated richness values using the nonparametric estimators ICE and Chao 2 were 251 and 241, respectively. A few species were very abundant, but many were represented by only a few individuals. The diversity value calculated with the Shannon Index over the entire year was 3.86. Species richness and abundance varied with time, with the highest values recorded in the rainy season and lowest values in the dry season. The fauna was more similar to the fauna of Chamela, Jalisco, than to El Aguacero, Chiapas, and consists of 65% species endemic to Mexico.

The Cerambycid Fauna of the Tropical Dry Forest of “El Aguacero,” Chiapas, México (Coleoptera: Cerambycidae)

Abstract The results of a study on the fauna of Cerambycidae of the tropical dry forest of “El Aguacero,” Chiapas, Mexico are presented. Data were obtained during a year of monthly collections and records obtained during sporadic collections carried out mainly during the rainy season. A total of 203 species, representing 119 genera, 42 tribes and four subfamilies were recorded. Seventy-nine species were recorded for the first time for the state of Chiapas. The subfamilies with the greater numbers of species, genera and tribes were the Cerambycinae with 111, 66 and 22 and Lamiinae with 81, 45 and 16, respectively. The genera with the greatest numbers of species were Stenosphenus Haldeman, Sphaenothecus Dupont, Lepturges Bates and Phaea Newman with six each and Anelaphus Linsley, Psyrassa Pascoe, Neocompsa Martins and Acyphoderes Serville with five each. The largest number of species was recorded during June (101) and the least during March (two); the largest number of individuals was recorded during September and the least during February. Seasonally, 165 species were collected during the rainy season, 17 during the dry season and 21 during both. Six hundred twenty two individuals were collected during the rainy season and 249 during the dry season. The species abundance pattern showed few abundant species and many with few individuals (63% were represented by three or fewer individuals). The most abundant species were Stenosphenus cribripennis cribripennis Thomson (51 individuals), Essostrutha laeta (Newman) (45), Ironeus pulcher Bates (43), Ochraethes sp. near O. sommeri (Chevrolat) (38), Sphaenothecus toledoi Chemsak and Noguera (33), Sphaenothecus trilineatus Dupont (31), Ochraethes pollinosa Chevrolat (31) and Sphaenothecus maccartyi Chemsak and Noguera (30). The seasonal activity of most species as adults was restricted, with 141 species found only during one month and 37 during two months. The fauna of “El Aguacero” was compared with two other similar sites in Mexico, and is more similar to that of Chamela, Jalisco than to that of Huautla, Morelos; sharing 78 species with the first and only 41 with the second.

A Faunal Study of Cerambycidae (Coleoptera) from One Region with Tropical Dry Forest in México: San Buenaventura, Jalisco

The results of a study of the fauna of cerambycids of the tropical dry forest of San Buenaventura, Jalisco, México are presented. The study was carried out between November, 1996 and October, 1997. The collections were carried out during five days of every month and the collection methods included light trapping, Malaise trapping and direct collecting. A total of 109 species, 76 genera, 30 tribes and 5 subfamilies were recorded. The subfamily with the greatest number of species was Cerambycinae with 62, followed by Lamiinae with 40, Lepturinae and Prioninae with three and Disteniinae with one. The tribes with the largest number of genera and species were Trachyderini with 14 and 20, Acanthocinini with nine and 18 and Elaphidiini with eight and 15. The genera with the most species were Stenosphenus Haldeman with five and Eburia Lepeletier, Sphaenothecus Dupont, Lepturges Bates and Urgleptes Dillon with four. The richness value using the non-parametric estimator ICE was 151 species. The species abundance pattern showed few very abundant species and many with few individuals. The diversity value calculated with the Shannon Index over the entire year was 3.88. Species richness and abundance varied with time, with the highest values recorded in the rainy season and lowest values in the dry season. The fauna was more similar to the fauna of Chamela, Jalisco than to Sierra de Huautla, Morelos or El Aguacero, Chiapas and consists of 37% species endemic to México.

A New Species of Enaphalodes Haldeman from Florida (Coleoptera: Cerambycidae) with Review of Genus, Synonymy, and Key to Species

Abstract A new species of Enaphalodes, E. archboldi Lingafelter and Chemsak, is described from Archbold Research Station, Highlands County, Florida. This localized species has been confused with A. rufulus (Haldeman), a widespread species, which it resembles. Romaleum decipiens Bates is designated as a new synonym of E. atomarius (Drury). Romaleum cylindricum Knull is designated as a new synonym of E. cortiphagus (Craighead). Diagnoses, habitus photographs and drawings, and a key to the nine recognized species of Enaphalodes are provided.

A NEW SPECIES OF ERLANDIA AURIVILLIUS FROM MEXICO (COLEOPTERA: CERAMBYCIDAE: CERAMBYCINAE)

Abstract Erlandia mexicana new species is described from México and biogeographical comments are included.