Isodacrys Sharp, 1911

Cortés-Hernández, Kevin A. & Morrone, Juan J., 2019, A key to the Mexican genera of Tanymecini (Coleoptera: Curculionidae), Zootaxa 4615 (1), pp. 46-56 : 50

Isodacrys Sharp, 1911

( figures 15, 16 )

Of the 13 described species, 10 are distributed in Mexico ( Morrone 1999). Adults have been collected either from herbaceous plants of different families ( Asteraceae , Verbenaceae , Fabaceae , Cucurbitaceae and Solanaceae ) and trees ( Pinus , Quercus , Celtis , Condalia and Eucalyptus ), suggesting that species are general feeders during this stage ( Howden 1961; Anderson 2002). They can be also found in leaf litter and under rocks. All Isodacrys are apterous and there are some undescribed species ( Howden 1970). Its taxonomic position in Tanymecini is due to morphological affinities with other genera ( Sharp 1911; Howden 1961. 1970). Differences among Isodacrys , Pandeleteinus and some West Indian genera such as Paradacrys and Paululusus are mainly based on wing presence and other characteristics like width, length or curvature of aedeagus, distance between procoxae, depth of anterior sulcus on ventrites 3–5, among others ( Howden 1961, 1969, 1970), that sometimes overlap, therefore their phylogenetic relationships and generic definitions need further study. See Howden (1961) to separate species.

Isodacrys apicale Howden, 1961 .

Isodacrys brevirostre Howden, 1961 .

Isodacrys buchanani Howden, 1961 .

Isodacrys crispum Howden, 1961 .

Isodacrys geminatum Howden, 1961 .

Isodacrys mexicanum Sharp, 1911 .

Isodacrys minutum Sharp, 1911 .

Isodacrys orizabae Sharp, 1911 .

Isodacrys ovipennis (Schaeffer, 1908) .

Isodacrys schwarzi Champion, 1911 .

Figures

FIGURES 11–16. Species of Mexican Tanymecini. 11. Airosimus callifer, dorsal habitus. 12. A. callifer, lateral habitus. 13. Hadromeropsis brevicoma, dorsal habitus. 14. H. brevicoma, lateral habitus. 15. Isodacrys mexicanum, dorsal habitus. 16. I. mexicanum, lateral habitus.