Teuchophorus pauper Meuffels & Grootaert, 2003, 2004

Grootaert, Patrick, 2006, The Genus Teuchophorus (Diptera: Dolichopodidae) In Singapore, Raffles Bulletin of Zoology 54 (1), pp. 59-82 : 68-69

Teuchophorus pauper Meuffels & Grootaert, 2003

( Figs. 20-21 )

Material examined. – THAILAND: 4 males, Phang-Nga, Sa Nangmanora (type locality), 23 Oct.1997 (97104, coll. P. Grootaert); 12 males, Phang-Nga province, Thap Put, 23 Oct.1997, (97107, coll. P. Grootaert) mixed population of T. singaporensis and T. pauper so 3 females unidentified; 1 male, Satun province, Ban Du Son, 29 Oct.1997, forest with mainly bamboo, (97141, coll. P. Grootaert, RBINS); 119 males, 31 females, Songkhla province, Ban Khlong Kua, 29 Oct.1997, secondary rain forest (97142, coll. P. Grootaert, RBINS), pure population of T. pauper , no T. singaporensis present; 2 males, 2 females, Satun province, 20 km north of La-Ngu, 1 Nov.1997, secondary rain forest (97155, coll. P. Grootaert, RBINS); 10 males, 1 female, Satun province, 21 km north of La-Ngu, 1 Nov.1997, secondary rain forest (97156, coll. P. Grootaert, RBINS).

Diagnosis. – Medium-sized species with yellowish antennae. No acr; 5 dc. Bristles on head, thorax and legs yellow to yellowish brown. Costa not thickened. Prosterna entirely brown with a central black stripe. Mesopleura almost entirely brown. Hypandrium bifurcate, but asymmetric with a very short left arm and a longer right arm. The tip of the right arm is rugose in right lateral view. The tip of the aedeagus is long effilate. The dorsal surstylus is dorsally near tip excavated and bears two long bristles at the base of the concavity.

Description. – Male. Body length: 1.5 mm, wing length: 1.25 mm.

Meuffels & Grootaert (2003) shows curiously bent appendages below the hypandrium. Specimens of the type locality ( Sa Nangmanora near Phang-Na, Thailand) were re-examined. In the original description (Fig. 120) the structure of the right hypandrial arm was misinterpreted. It is much shorter and has a rugose (wrinkled) tip. The dorsal epandrial lobe is very long and bears two short, pointed appendages ( Fig. 20 ) .

I have not found T. pauper in Singapore. Considering its distribution in South-Thailand and the mixed populations of T. pauper and T. singaporensis , it is likely to occur in Singapore as well.

Distribution and habitat. – South Thailand, Indonesia: Sulawesi Utara. Rain forest and swamp forest.

Figures

Figs. 20-21. Teuchophorus pauper Meuffels & Grootaert, male: 20, hypopygium ventral view, with detail of dorsal epandrial lobe (del), right hypandrial arm and tip aedeagus; 21, hypopygium lateral view. L: left; R: right.