Aphelocheirus, Westwood, 1833

Polhemus, Dan A. & Polhemus, John T., 2013, Guide To The Aquatic Heteroptera Of Singapore And Peninsular Malaysia. Xi. Infraorder Nepomorpha- Families Naucoridae And Aphelocheiridae, Raffles Bulletin of Zoology 61 (2), pp. 665-686 : 681-682

publication ID

https://doi.org/ 10.5281/zenodo.5352700

persistent identifier

https://treatment.plazi.org/id/03FE7253-F509-FFF4-FC99-FCBAFD12FDCA

treatment provided by

Tatiana

scientific name

Aphelocheirus
status

 

KEY TO THE SPECIES OF APHELOCHEIRUS View in CoL

occurring in Singapore and Peninsular Malaysia (modified from D. Polhemus & J. Polhemus, 1989)

1. Small species, body length less than 5 mm (subgenus Micraphelocheirus View in CoL ) ................................................................... ........................... Aphelocheirus malayensis Zettel & Papáček View in CoL

– Larger species, body length exceeding 7 mm (subgenus Aphelocheirus View in CoL ).........................................................................2

2. Male with conspicuous projecting tab on abdominal ventrite IV ( Fig. 49 View Figs ); female subgenital plate very short and truncate, broader than long, with two long hair tufts on posterior margin ( Fig. 50 View Figs ) ........................... A. grik D. Polhemus & J. Polhemus View in CoL

– Male lacking a projecting tab on abdominal ventrite IV; female subgenital plate longer, shape roughly triangular or elongate trapezoidal with elongate lateral hair tufts ( Figs. 44 View Figs , 57 View Figs )......3

3. Male with dark, raised, ovate swelling on ventral face of hind femur ( Fig. 45 View Figs ); body length in both sexes less than 8.0 mm; head produced ahead of eyes for 0.70 the dorsal length of an eye ( Figs. 41, 42 View Figs )... A. femoratus D. Polhemus & J. Polhemus View in CoL

– Male lacking dark, raised, ovate swelling on ventral face of hind femur; body length in both sexes exceeding 8.5 mm; head produced ahead of eyes for 0.60 the dorsal length of an eye ( Figs. 53, 54 View Figs ) ........ A. malayanus D. Polhemus & J. Polhemus View in CoL

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