Notacanthurus baei Braasch & Boonsoong, 2009

Boonsoong, Boonsatien & Braasch, Dietrich, 2013, Heptageniidae (Insecta, Ephemeroptera) of Thailand, ZooKeys 272, pp. 61-93 : 71-72

Notacanthurus baei Braasch & Boonsoong, 2009 Figs 2 I–J6A–B

Notacanthurus baei Braasch & Boonsoong, 2009: 34-38, Figs 1-18. (orig.)

Larva.

Braasch and Boonsoong 2009: 34-38, Figs 1-18.

Adult.

Unknown. Its prospective penis (Fig. 14, Braasch 1986) is quite unlike the bilobed penes of the Himalayan Notocanthurus (Figs 4-8, Braasch 1986).

Eggs.

Chorionic pattern of geometrically arranged small KCTs covering the entire egg surface (Fig. 6A) and interspersed among crenulated granules, folded surface of the chorion, many microgranules densely scattered all over the surface of the chorion, large micropyles on equatorial plane (Fig. 6B).

Distribution.

Mae Hong Son province, Mae Chaem district, Doi Inthanon NP, Doi Suthep NP (Chiang Mai province)

Diagnosis.

Larvae of Notacanthurus baei are easily identified by having a dorsal median abdominal ridge on tergites 1-9 and denticles on the claws. Larvae of the Indian species Notocanthurus edentatus Braasch, 1986 have no dorsal ridges on the abdomen ( Braasch 1986); however, all Himalayan species of Notacanthurus key out by the absence of denticles on the claws. Its prospective penis (Fig. 14, Braasch 1986) is quite unlike the bilobed penes of the Himalayan Nothacanthurus (Figs 4-8, Braasch 1986)" and is expected to be a simple, not bilobed, penis in the male imago.

Habitat and biology.

Nothacanthurus baei larvae inhabit small streams and brooks. Larvae were usually found together with those of Asionurus species.

Remarks.

Braasch and Boonsoong (2009) described only one species of Nothacanthurus from Thailand. The adults of Nothacanthurus baei are unknown.